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Time Current Curves TC01200002E
Effective March 2018
Supersedes May 2017
Contents
Description		Page
Catalog Number Selection  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . 5
Digitrip 310+ Electronic Trip Unit
Types FDE, HFDE, FDCE
Long Delay (LD) and Short Delay (SD) with Flat Response and Override
(225A) (LSI, LSIG)  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . TC01203015E .  .  .  .  .  .  .  . 6
Long Delay Response and Short Delay with I2
t Response Curve and Override
(225A) (LS, LSG)  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . TC01203016E .  .  .  .  .  .  .  . 7
Ground Fault Response Curve (LSG, LSIG) .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . TC01203017E  .  .  .  .  .  .  . 8
Digitrip 210+ ElectronicTrip Unit
Types FDE, HFDE, FDCE
Long Delay (LD) and Short Delay (SD) with Flat Response and Override
(100A, 225A) (LSI) (Profiles J, K, R, S)  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . TC012001EN .  .  .  .  .  .  .  . 9
(100A, 225A) (LSI) (Profiles M, N) .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . TC012002EN  .  .  .  .  .  .  . 10
(100A, 225A) (LSI) (Profiles P, Q)  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . TC012003EN .  .  .  .  .  .  . 11
Long Delay (LD) and Short Delay (SD) with I2
t Response Curve and Override
(100A, 225A) (LSI) (Profiles L, O) .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . TC012004EN .  .  .  .  .  .  . 12
Long Delay (LD), Instantaneous, and Override
(100A, 150A) (LI)  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . TC012005EN .  .  .  .  .  .  . 13
(225A) (LI)  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . TC012006EN .  .  .  .  .  .  . 14
Single-pole thermal-magnetic trip units
Series C types EHD, FD, and HFD 15A .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . SC-4423-88A  .  .  .  .  .  .  . 15
Series C types EHD, FD, and HFD 20A .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . SC-4424-88A .  .  .  .  .  .  . 16
Series C types EHD, FD, and HFD 25A .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . SC-4425-88A .  .  .  .  .  .  . 17
Series C types EHD, FD, and HFD 30A .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . SC-4426-88A .  .  .  .  .  .  . 18
Series C types EHD, FD, and HFD 35A .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . SC-4427-88A .  .  .  .  .  .  . 19
Series C types EHD, FD, and HFD 40A .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . SC-4428-88A .  .  .  .  .  .  . 20
Series C types EHD, FD, and HFD 45A .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . SC-4429-88A .  .  .  .  .  .  . 21
Series C types EHD, FD, and HFD 50A .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . SC-4430-88A .  .  .  .  .  .  . 22
Series C types EHD, FD, and HFD 60A .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . SC-4431-88A .  .  .  .  .  .  . 23
Series C types EHD, FD, and HFD 70A .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . SC-4432-88A .  .  .  .  .  .  . 24
Series C types EHD, FD, and HFD 80A .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . SC-4433-88A .  .  .  .  .  .  . 25
Series C types EHD, FD, and HFD 90A .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . SC-4434-88A .  .  .  .  .  .  . 26
Series C types EHD, FD, and HFD 100A .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . SC-4435-88A .  .  .  .  .  .  . 27
Series C types FD and HFD 110A .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . SC-4436-88A .  .  .  .  .  .  . 28
Series C types FD and HFD 125A .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . SC-4437-88A .  .  .  .  .  .  . 29
Series C types FD and HFD 150A .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . SC-4438-88A .  .  .  .  .  .  . 30
Series C F-frame circuit breaker
time current curves
Contents (continued)
Two-, three-, and four-pole thermal-magnetic trip units		 Page
Series C types ED, EHD, FDB, FD, FDC, and HFD 15A .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . TC012036  .  .  .  .  .  .  . 31
Series C types ED, EHD, FDB, FD, FDC, and HFD 20A .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . TC012037  .  .  .  .  .  .  . 32
Series C types ED, EHD, FDB, FD, FDC, and HFD 25A .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . TC012038  .  .  .  .  .  .  . 33
Series C types ED, EHD, FDB, FD, FDC, and HFD 30A .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . TC012039  .  .  .  .  .  .  . 34
Series C types ED, EHD, FDB, FD, FDC, and HFD 35A .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . TC012040  .  .  .  .  .  .  . 35
Series C types ED, EHD, FDB, FD, FDC, and HFD 40A .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . TC012041  .  .  .  .  .  .  . 36
Series C types ED, EHD, FDB, FD, FDC, and HFD 45A .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . TC012042  .  .  .  .  .  .  . 37
Series C types ED, EHD, FDB, FD, FDC, and HFD 50A .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . TC012043  .  .  .  .  .  .  . 38
Series C types ED, EHD, FDB, FD, FDC, and HFD 60A .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . TC012044  .  .  .  .  .  .  . 39
Series C types ED, EHD, FDB, FD, FDC, and HFD 70A .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . TC012045  .  .  .  .  .  .  . 40
Series C types ED, EHD, FDB, FD, FDC, and HFD 80A .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . TC012046  .  .  .  .  .  .  . 41
Series C types ED, EHD, FDB, FD, FDC, and HFD 90A .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . TC012047  .  .  .  .  .  .  . 42
Series C types ED, EDB, EDS, EDH, EDC, EHD, FDB, FD, HFD, FDC 100A 2, 3 & 4 pole  . TC012029EN .  .  .  .  .  . 43
Series C types ED, EDB, EDS, EDH, EDC, EHD, FDB, FD, HFD, FDC 110A 2, 3, & 4 pole . TC012030EN .  .  .  .  .  . 44
Series C types ED, EDB, EDS, EDH, EDC, EHD, FDB, FD, HFD, FDC 125A 2, 3, & 4 pole . TC012031EN .  .  .  .  .  . 45
Series C types ED, EDB, EDS, EDH, EDC, EHD, FDB, FD, HFD, FDC 150A 2, 3, & 4 pole . TC012032EN .  .  .  .  .  . 46
Series C types ED, EDB, EDS, EDH, EDC, EHD, FDB, FD, HFD, FDC 175A 2, 3, & 4 pole . TC012033EN .  .  .  .  .  . 47
Series C types ED, EDB, EDS, EDH, EDC, EHD, FDB, FD, HFD, FDC 200A 2, 3, & 4 pole . TC012034EN .  .  .  .  .  . 48
Series C types ED, EDB, EDS, EDH, EDC, EHD, FDB, FD, HFD, FDC 225A 2, 3, & 4 pole . TC012035EN .  .  .  .  .  . 49
Series C types FDC, JDC, KDC and LDC ­— 240 V  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . AD-29-166A  .  .  .  .  .  . 50
Series C types FDC, JDC, KDC and LDC ­— 480 V .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . AD-29-166B  .  .  .  .  .  . 51
Series C types FDC, JDC, KDC and LDC ­— 600V .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . AD-29-166C  .  .  .  .  .  . 52
Note:
Time/current characteristic curves for Series C®
F-frame circuit breakers—voltages shown in curve headings are
maximum at which the breaker may be applied. Interrupting capacity of individual breaker is tabulated on each curve.
Time Current Curves are engineering reference documents for application and coordination purposes only.
For field testing molded case circuit breakers, refer to NEMA AB 4 guidelines.
2 EATON www.eaton.com
3EATON www.eaton.com
Time Current Curves TC01200002E
Effective March 2018
Series C
F-Frame
Revision notes
Note:N Unless noted below, all curves remain unchanged from their prior revision.
Revision Curve number Page Date
Changed FDCE, 600V interruption rating from 35 to 25 TC01203015 6 05-24-17
Deleted curves: SC-4146-87B, SC-4147-87B, SC-4148-87B, SC-4149-87B,
SC-6970-98, SC-5805-94A, SC-5528-93A, SC-5529-93A, SC-5530-93A,
SC-5531-93A, SC-6871-98.
See revision note. 43-48, 61-65
(old page #’s)
05-24-17
Added 7 new curves, combining FDC data with all other frame data. New curve
#’s are: TC012029EN, TC012030EN, TC012031EN, TC012032EN, TC012033EN,
TC012034EN, TC012035EN.
See revision note. 43-49
(new page #’s)
05-24-17
Added 3 new curves, demonstrating let-through current at 240V, 480V and 600V. AD-29-166A
AD-29-166B
AD-29-166C
62-64
(new page #’s)
05-24-17
Corrected maximum single pole trip time curves 110A, 125A. TC012030EN
TC012031EN
44-45 04-01-18
Deleted curves: SC-5516-93A, SC-5517-93A, SC-5518-93A, SC-5519-93A,
SC-5520-93A, SC-5521-93A, SC-5522-93A, SC-5523-93A, SC-5524-93A,
SC-5525-93A, SC-5526-93A, SC-5527-93A.
04-01-18
Added 12 new curves, combining FDC data with all other frame data.
New curve #’s are: TC012036EN , TC012037EN, TC012038EN, TC012039EN,
TC012040EN, TC012041EN, TC012042EN, TC012043EN, TC012044EN, TC012045EN,
TC012046EN, TC012047EN.
See revision note. 31-42 04-01-18
4
Time Current Curves TC01200002E
Effective March 2018
Series C
F-Frame
EATON www.eaton.com
Trip Amperes
010
015
020
025
030
035
040
045
050
060
070
080
090
100
110
125
150
175 (FD, HFD, FDC, two-, three-, four-pole only)
200 (FD, HFD, FDC, two-, three-, four-pole only)
225 (FD, HFD, FDC, two-, three-, four-pole only)
CircuitBreaker
Type
EHD
FDB
FD
HFD
FDC
Number of
Poles
1 = 1 pole
2 = 2 poles
3 = 3 poles
4 = 4 poles
Suffix
E = 100% protected (four-pole only) neutral pole
EH = 50% protected (four-pole only)
K = High magnetic molded case switch
L = Line and load terminals
S = Stainless steel terminals
V = 50 °C calibration
W = Without terminals
Y = Line terminals only
Z = Aluminum terminals (≤100 amperes)
Circuit Breaker
Type
EDB
EDS
ED
EDH
EDC
Number of
Poles
2 = 2 poles
3 = 3 poles
Trip
Amperes
100
125
150
175
200
225
Suffix
L = Line and load terminals
W = Without terminals
Y = Line terminals only
Z = Aluminum terminals (100 amperes)
FDC 3 100 L
EDC 3 200 L
Blank = Load side terminals only
Blank = Load side terminals only
Table3. F-Frame Circuit Breakers withThermal-MagneticTrip UnitTechnology
Performance
@ 480 Vac
FDE
HFDE
Number of
Poles
3 = 3 poles
Suffix
W
L
= Without Terminals
= Line and Load Terminals
Blank = Load Side Terminals Only
Trip Unit
21 = LI
22 = LSI
Amperes
100
150
225
HFDE 3 21 L100
= 35 kAIC
= 65 kAIC
Table 2. F-Frame Circuit Breakers with 210+ ElectronicTrip UnitTechnology
Circuit Breaker
Type
FDE
HFDE
FDCE
Number of
Poles
3 = 3 poles
Suffix
ZG = Zone
selective
interlocking
Blank = No option
Trip Unit
33 = LS
32 = LSI
35 = LSG
36 = LSIG
Suffix
W = Without terminals
L = Line and load terminals
Blank = Load side terminals only
Trip
Amperes
80
160
225
FDE 3 225 32 W
= 35 kAIC
= 65 kAIC
= 100 kAIC
Table 1. F-Frame Circuit Breakers with 310+ ElectronicTrip UnitTechnology
Catalog Number Selection
This information is presented only as an aid to understanding catalog numbers.
It is not to be used to build catalog numbers for circuit breakers or trip units.
5
Time Current Curves TC01200002E
Effective March 2018
Series C
F-Frame
EATON www.eaton.com
Figure 2. Digitrip 210+ Nameplates
Figure 1. Digitrip 310+ Nameplates
LI LSI
LS LSG LSIGLSI
6
Time Current Curves TC01200002E
Effective March 2018
Series C
F-Frame
EATON www.eaton.com
.01
1
2
3
4
5
6
7
8
9
10
20
30
40
50
60
70
80
90
100
1000
900
800
700
600
500
400
300
200
2000
3000
4000
5000
6000
7000
8000
9000
10000
.02
.03
.04
.05
.06
.07
.08
.09
.1
.2
.3
.4
.5
.6
.7
.8
.9
1
3
4
5
6
7
8
9
10
20
30
40
50
60
70
80
90
100
1000
900
800
700
600
500
400
300
200
2000
3000
4000
5000
6000
7000
8000
9000
10000
.01
.02
.03
.04
.05
.06
.07
.08
.09
.1
.2
.3
.4
.5
.6
.7
.8
.9
1
Available long delay time:
2,4,7,10,12,15,20,24
Shown @ 6x
2,4,7,15,24 seconds
+0 / –30%
Ir
Available short delay
pick up settings
2–8,10, x 5%12 Ir
(See Note 7)
FDE Circuit breaker time/current curves (phase current)
:IAvailable sensors( )n
80A
160A
225A
1 2 3 4 5 7 10 20 30 40 50 70 100 2 3 4 5 7 10 20 30 40 50 70 100.5 .7
1 2 3 4 5 7 10 20 30.5 .7
Types FDE, FDCE, HFDE circuit breakers
12
.
.24
1.15
Notes:
Application determines
end of curve
Instantaneous
override(see Note 8)
.
.
300 ms
(P,Q,R)
120 ms
(M,N,O)
Inst.
(J,K,L)
15
7
.4
2
12 Ii
1. Curve accuracy applies from –20C to +55C ambient. Temperatures above +85C cause an over-
temperature protection trip. For possible continuous ampere dertaing for ambient above 40C,
refer to Eaton.
2. Application frequency is 50/60 Hz.
3. There is a memory effect that can act to shorten the long delay. The memory effect comes into play
if a current above the long delay pick up value exists for a time and then is cleared by the tripping of
a down stream device or the circuit breaker itself. A subsequent overload will cause the circuit breaker
to tripin shorter time than normal. The amount of time delay reduction is inverse to the amount of
time that has elapsed since the previous overload. Approximately five minutes is required between
overloads tocompletely reset memory.
4. The right portion of the curve is determined by the interrupting rating of the circuit breaker.
The left portion of the curve is shown as a multiple of the long delay setting.
(long delay pick up = 115% of I ). Range is 110%–120%.
6. Total clearing times shown include the response times of the trip unit, the breaker opening, and the
interruption of the current.
7. The short delay pick up has nine settings/positions, 2–8, 10, 12.
8. For high fault current levels an additional fixed instantaneous hardware override is provided
(corresponding to SDPU position 9) at 12x (I ) and designated as 12I . Instantaneous tolerance is +/–20%.
9. For LD response and SD with flat response (this curve): TC01203015E
10. For LD response and SD with I T response curve, see: TC01203016E
11. For ground fault delay response curve, see: TC01203017E
12. Digitrip RMS 310+ trip units are suitable for functional field testing with test kit Cat. No. MTST120V.
For field testing using primary injection methods, follow NEMA publication AB 4-2003.
2
n
n
Maximum total
clearing time
Minimum total
clearing time
I 80A 160A 225AI
A
B
C
D
E
F
G
H
15A
20A
30A
40A
50A
60A
70A
80A
60A
70A
80A
90A
100A
125A
150A
160A
100A
110A
125A
150A
160A
175A
200A
225A
i
Breaker
type
Symmetrical RMS amperes (kA) UL/CSA
FDE
HFDE
FDCE
240V
Interrupting ratings—50/60 Hz
65
100
200
480V
35
65
100
600V
18
25
35
r n
TIMEINSECONDS
TIMEINSECONDS
1MINUTE1HOUR2HOURS
Current in Multiples of (lr)
Current in Multiples of (lr) Current in Multiples of (lr)
2
8
10
4
6
3
7
5
sec.
0.001
0.01
0.1
1
1000 10000 100000
Current in Amps
Interrupting
Rating
Determines
End of Curve
Fixed Instantaneous
Override
600V
480V
240V
Figure 3.Types FDE, HFDE, and FDCE 225A—Long/Short Delay—Curve NumberTC01203015E
Digitrip 310+ Circuit BreakerTime/Current Curves (Phase Current)
Series C F-Frame Circuit Breakers
CatalogTypes: FDE, HFDE, FDCE
Trip UnitTypes: 32 (LSI), 36 (LSIG)
Available Sensors (In
): 80A, 160A, 225A
Long Delay (LD) and Short Delay (SD) with Flat Response
(Ir) / (In) 80A	 160A	225A
A
B
C
D
E
F
G
H
15A	60A	100A
20A	70A	110A
30A	80A	125A
40A	90A	150A
50A	 100A	160A
60A	 125A	175A
70A	 150A	200A
80A	 160A	225A
Symmetrical RMS amperes (kAS) UL/CSA
FDE		 65	35	18
HFDE		 100	 65	 25
FDCE		 200	100	25
240V	480V	600VBreakerType
Interrupting Rating—50/60 Hz
Notes:
1.		Curve accuracy applies from –20C to +55C ambient. Temperatures above +85C cause an overtemperature 	
		protection trip. For possible continuous ampere derating for ambient above 40C, refer to Eaton.
2.		Application frequency is 50/60 Hz.
3.		There is a memory effect that can act to shorten the long delay. The memory effect comes into play if a current 	
		above the long delay pick up value exists for a time and then is cleared by the tripping of a down stream device 	
		or the circuit breaker itself. A subsequent overload will cause the circuit breaker to trip in shorter time than 	
		normal. The amount of time delay reduction is inverse to the amount of time that has elapsed since the previous 	
		overload. Approximately five minutes is required between overloads to completely reset memory.
4.		The right portion of the curve is determined by the interrupting rating of the circuit breaker.
5.		The left portion of the curve is shown as a multiple of the long delay setting.
		(long delay pick up = 115% of In
). Range is 110%–120%.
6.		Total clearing times shown include the response times of the trip unit, the breaker
		opening, and the interruption of the current.
7.		The short delay pick up has nine settings/positions, 2–8, 10, 12.
8.		For high fault current levels an additional fixed instantaneous hardware override is provided (corresponding to 	
		SDPU position 9) at 12x (In
) and designated as 12Ii. Instantaneous tolerance is +/–20%.
9.		For LD response and SD with flat response (this curve): TC01203015E.
10.	For LD response and SD with I2
T response curve, see: TC01203016E.
11. 	For ground fault delay response curve, see: TC01203017E.
12.	Digitrip RMS 310+ trip units are suitable for functional field testing with test kit Cat. No. MTS120V. For field
		testing using primary injection methods, follow NEMA publication AB-4-2003.
7
Time Current Curves TC01200002E
Effective March 2018
Series C
F-Frame
EATON www.eaton.com
.01
1
2
3
4
5
6
7
8
9
10
20
30
40
50
60
70
80
90
100
1000
900
800
700
600
500
400
300
200
2000
3000
4000
5000
6000
7000
8000
9000
10000
.02
.03
.04
.05
.06
.07
.08
.09
.1
.2
.3
.4
.5
.6
.7
.8
.9
1
3
4
5
6
7
8
9
10
20
30
40
50
60
70
80
90
100
1000
900
800
700
600
500
400
300
200
2000
3000
4000
5000
6000
7000
8000
9000
10000
.01
.02
.03
.04
.05
.06
.07
.08
.09
.1
.2
.3
.4
.5
.6
.7
.8
.9
1
Maximum total
clearing time
Available long delay time:
2,4,7,10,12,15,20,24 sec.
Shown @ 6 x
2,4,7,15,24 seconds
+0 / –30%
Ir
2
Application determines
end of curve
Available short delay
pick up settings
2–8,10, x 5%12 Ir
(see Note 7)
Instantaneous
override(see Note 10)
FDE Circuit breaker time/current curves (phase current)
Long delay (LD) and short delay (SD) with I T response
2
Available sensors( ):In
80A
160A
225A
1 2 3 4 5 7 10 20 30 40 50 70 100 2 3 4 5 7 10 20 30 40 50 70 100.5 .7
1 2 3 4 5 7 10 20 30.5 .7
Types FDE, FDCE, HFDE circuit breakers
Notes:
1. Curve accuracy applies from –20C to +55C ambient. Temperatures above +85C cause an over-
temperature protection trip. For possible continuous ampere derating for ambient above 40C, refer
to Eaton.
2. Application frequency is 50/60 Hz.
4. The right portion of the curve is determined by the interrupting rating of the circuit breaker.
5. The left portion of the curve is shown as a multiple of the long delay setting
(Long delay pick up = 115% of ). Range is110%–120%.
7. The short delay pick up has nine settings/positions: 2–8, 10, 12.
9. Breakpoint back to FLAT response occurs @ 8x for upper line of the I T curve.
(corresponding to SDPU position nine) at 12x and designated as 12 . Instantaneous tolerance is+/–20%.
12. For LD response and SD with I Tresponse (this curve):
13. For ground fault delay response curve, see: TC01203017E
I
I
( I ) I
r
r
n
2
2
TC01203016E
12
I T
2
short delay
(see Note 8)
Minimum total
clearing time
.
.4
.
.
.24
.
1.15
See Note 9 12 Ii
67ms
15
7
I 80A 160A 225A
A 15A 60A 100A
B 20A 70A 10A
C 30A 80A 125A
D 40A 90A 150A
E 50A 100A 160A
F 60A 125A 175A
G 70A 150A 200A
H 80A 160A 225A
I
6. Total clearing times shown include the response times of the trip unit, the breaker opening, and the
interruption of the current.
2
8. Short delay I T band has a tolerance of +/–15%.
Breaker
type
Symmetrical RMS amperes (kA) UL/CSA
FDE
HFDE
FDCE
240V
Interrupting ratings—50/60 Hz
65
100
200
480V
35
65
100
600V
18
25
35
if a current above the long delay pick up value exists for a time and then is cleared by the tripping of a
down stream device or the circuit breaker itself. A subsequent overload will cause the circuit breaker to trip
in shorter time than normal. The amount of time delay reduction is inverse to the amount of time that
completely reset memory.
i
r n
Current in Multiples of (lr
) Current in Multiples of (lr
)
Current in Multiples of (lr
)
TIMEINSECONDS
TIMEINSECONDS
1MINUTE1HOUR2HOURS
2
8
10
7
5
4
6
3
0.001
0.01
0.1
1
1000 10000 100000
Current in Amps
Interrupting
Rating
Determines
End of Curve
Fixed Instantaneous
Override
600V
480V
240V
Figure 4.Types FDE, HFDE, and FDCE 225A—Long Short Delay and I2
T—Curve NumberTC01203016E
Digitrip 310+ Circuit BreakerTime/Current Curves (Phase Current)
Series C F-Frame Circuit Breakers
CatalogTypes: FDE, HFDE, FDCE
Trip UnitTypes: 32 (LS), 5 (LSG)
Available Sensors (In): 80A, 160A, 225A
Long Delay Response (Ir) and Short Delay with I2T Response Curve
Notes:
1.		Curve accuracy applies from –20C to +55C ambient. Temperatures above +85C cause an overtemperature 	
		protection trip. For possible continuous ampere derating for ambient above 40C, refer to Eaton.
2.		Application frequency is 50/60 Hz.
3.		There is a memory effect that can act to shorten the long delay. The memory effect comes into 		
		play if a current above the long delay pick up value exists for a time and then is cleared by the 		
		tripping of a down stream device or the circuit breaker itself. A subsequent overload will cause the 		
		circuit breaker to trip in shorter time than normal. The amount of time delay reduction is inverse 		
		to the amount of time that has elapsed since the previous overload. Approximately five minutes is 		
		required between overloads to completely reset memory.
4.		The right portion of the curve is determined by the interrupting rating of the circuit breaker.
5.		The left portion of the curve is shown as a multiple of the long delay setting.
		(long delay pick up = 115% of Ir ). Range is 110%–120%.
6.		Total clearing times shown include the response times of the trip unit, the breaker
		opening, and the interruption of the current.
7.		The short delay pick up has nine settings/positions, 2–8, 10, 12.
8.		Short delay I2T band has a tolerance of +/–15%.
9.		Breakpoint back to FLAT response occurs @ 8x Ir for upper line of the I2T curve.
10.		For high fault current levels an additional fixed instantaneous hardware override is provided (corresponding 	
		to SDPU position nine) at 12x (In) and designated as Ii. Instantaneous tolerance is +/–20%.
11.	For LD response and SD with flat response curve, see: TC01203015E.
12.	For LD response and SD with I2T response (this curve): TC01203016E.
13. 	For ground fault delay response curve, see: TC01203017E.
14. Digitrip RMS 310+ trip units are suitable for functional field testing with test kit Cat. No
		MTST120V. For field testing using primary injection methods, follow NEMA publication AB 4-2003.
UL/CSA rms Sym. kA, 50/60 Hz
FDE		 65	35	18
HFDE		 100	 65	 25
FDCE		 200	100	25
240V	480V	600VBreakerType
Interrupting Rating
(Ir) / (In) 80A	 160A	225A
A
B
C
D
E
F
G
H
15A	60A	100A
20A	70A	110A
30A	80A	125A
40A	90A	150A
50A	 100A	160A
60A	 125A	175A
70A	 150A	200A
80A	 160A	225A
8
Time Current Curves TC01200002E
Effective March 2018
Series C
F-Frame
EATON www.eaton.com
.01
2
3
4
5
6
8
10
20
30
40
50
60
70
80
90
100
1000
900
800
700
600
500
400
300
200
.02
.03
.04
.05
.06
.07
.08
.09
.1
.2
.3
.4
.5
.6
.7
.8
.9
1
7
9
2000
3000
4000
5000
6000
7000
8000
9000
10000
ETUNIM1SDNOCESNIEMIT
.1 .2 .3 .4 .5 .7 1.0 2.0
.1 .2 .3 .4 .5 .7 1.0 2.0
10%)
.4X
120ms
(K,N,Q)
300ms
(L,O,R)
Inst.
(J,M,P)
.3X
.2X 1X.6X
.8X
InGround current in multiple of ( )
Ground fault pickup settings
(tolerance
Figure 5.Types FDE, HFDE, and FDCE 225A—LSIG—Curve NumberTC01203017E
Digitrip 310+ Circuit breaker time/current curves (ground current)
Series C F-Frame Circuit Breakers
CatalogTypes: FDE, HFDE, FDCE, industrail circuit breakers
Ground fault delay response
Notes:
1.		Curve accuracy applies from –20C to +55C ambient. Temperatures above +85C cause an
		overtemperature protection trip. For possible continuous ampere derating for ambient above 40C,
		refer to Eaton.
2.		Application frequency is 50/60 Hz.
3.		Trip units are suitable for functional field testing with test kit style # 70C1056G52.
4.		For LD response and SD with flat response curve, see: TC01203015E.
5.		For LD response and SD with I2
T response curve, see: TC01203016E.
4.		For ground fault delay response (this curve): TC01203017E.
LSG
LSIG
(Ir) / (In) 80A	 160A	225A
A
B
C
D
E
F
G
H
15A	60A	100A
20A	70A	110A
30A	80A	125A
40A	90A	150A
50A	 100A	160A
60A	 125A	175A
70A	 150A	200A
80A	 160A	225A
Switch
Setting tSD	 tGF
J
K
L
M
N
O
P
Q
R
Inst.	Inst.
Inst.	120
Inst.	300
120	Inst.
120	120
120	300
300	Inst.
300	120
300	300
9
Time Current Curves TC01200002E
Effective March 2018
Series C
F-Frame
EATON www.eaton.com
0.01
0.1
1
10
100
1000
10000
1 10 100
TimeinSeconds
Current in Multiples of Ir
300 ms
150 ms
Minimum
Commit Time
Maximumtotal
clearingtime
2x
10x
Long Delay Pickup
@ 115% Ir ± 5%
Long Delay
@ 6×Ir +0%/-30%
0.001
0.01
0.1
1
1000 10000 100000
Current in Amps
Interrupting
Rating
Determines
End of Curve
Fixed Instantaneous
Override
600V
480V
240V
Figure 6. Digitrip 210+Trip Units (100 & 225A), Long Delay and Short Delay with Flat Response and Override (LSI, Profiles K, J, S, R)
Curve NumberTD012001EN, June 2015
Digitrip 210+ Circuit BreakerTime/Current Curves (Phase Current)
Series C F-frame circuit breakers (100A and 225A)
CatalogTypes: FDE, HFDE 	 Profiles: J, K, R, S
Trip UnitTypes: 22 (LSI)
UL/CSA rms Sym. kA, 50/60 Hz
FDE
HFDE
240Vac	480Vac	600Vac	250VdcBreakerType
Interrupting Rating
65	 35	 18	—
100	 65	 25	—
A	 40A	100A
B	 50A	110A
C	 60A	125A
D	 70A	150A
E	 80A	175A
F	 90A	200A
G	 100A	225A
Rated Amperes
Ir
	 100A	225A
J	2	150
K	2	300
L	2	I2
t
M	4	 Inst
N	4	 150
O	4	I2
t
P	6	Inst
Q	6	300
R	 10	150
S	 10	300
SD Profile	 Isd
(X lr
)	tsd
(ms)
Notes:
1		Curve accuracy applies from -20C to +55C. Temperatures above +105C cause an 	
		overtemperature protection trip.	
2		There is a memory effect that can act to shorten the long delay. Approximately five 	
		minutes is required between overloads to completely reset this thermal memory.
3		Total clearing times shown include the response times of the trip unit, the breaker 	
		opening, and the interruption of the current.
4		Short delay pickups settings in multiples of Ir
± 10%. Short delay time accuracy 	
		+0ms/-30ms
5		For high fault current levels an additional fixed instantaneous hardware override is 	
		provided at 2500A ±10%.
10
Time Current Curves TC01200002E
Effective March 2018
Series C
F-Frame
EATON www.eaton.com
0.01
0.1
1
10
100
1000
10000
1 10 100
TimeinSeconds
Current in Multiples of Ir
150 ms
50 ms
Minimum
Commit Time
Maximumtotal
clearingtime
Fixed Instantaneous
Override
0.001
0.01
0.1
1
1000 10000 100000
Current in Amps
Interrupting
Rating
Determines
End of Curve
Fixed Instantaneous
Override
600V
480V
240V
4x
Long Delay Pickup
@ 115% Ir ± 5%
Long Delay
@ 6×Ir +0%/-30%
Figure 7. Digitrip 210+Trip Units (100 & 225A), Long Delay and Short Delay with Flat Response and Override (LSI, Profiles N, M)
Curve NumberTD012002EN, June 2015
Digitrip 210+ Circuit BreakerTime/Current Curves (Phase Current)
Series C F-frame circuit breakers (100A and 225A)
CatalogTypes: FDE, HFDE 	 Profiles: M, N
Trip UnitTypes: 22 (LSI)
UL/CSA rms Sym. kA, 50/60 Hz
FDE
HFDE
240Vac	480Vac	600Vac	250VdcBreakerType
Interrupting Rating
65	 35	 18	—
100	 65	 25	—
A	 40A	100A
B	 50A	110A
C	 60A	125A
D	 70A	150A
E	 80A	175A
F	 90A	200A
G	 100A	225A
Rated Amperes
Ir
	 100A	225A
J	2	150
K	2	300
L	2	I2
t
M	4	 Inst
N	4	 150
O	4	I2
t
P	6	Inst
Q	6	300
R	 10	150
S	 10	300
SD Profile	 Isd
(X lr
)	tsd
(ms)
Notes:
1		Curve accuracy applies from -20C to +55C. Temperatures above +105C cause an 	
		overtemperature protection trip.	
2		There is a memory effect that can act to shorten the long delay. Approximately five 	
		minutes is required between overloads to completely reset this thermal memory.
3		Total clearing times shown include the response times of the trip unit, the breaker 	
		opening, and the interruption of the current.
4		Short delay pickups settings in multiples of Ir
± 10%. Short delay time accuracy 	
		+0ms/-30ms
5		For high fault current levels an additional fixed instantaneous hardware override is 	
		provided at 2500A ±10%.
11
Time Current Curves TC01200002E
Effective March 2018
Series C
F-Frame
EATON www.eaton.com
0.01
0.1
1
10
100
1000
10000
1 10 100
TimeinSeconds
Current in Multiples of Ir
300 ms
50 ms
Minimum
Commit Time
Maximum total
clearing time
0.001
0.01
0.1
1
1000 10000 100000
Current in Amps
Interrupting
Rating
Determines
End of Curve
Fixed Instantaneous
Override
600V
480V
240V
6x
Long Delay Pickup
@ 115% Ir ± 5%
Long Delay
@ 6×Ir +0%/-30%
Figure 8. Digitrip 210+Trip Units (100 & 225A), Long Delay and Short Delay with Flat Response and Override (LSI, Profiles Q, P)
Curve NumberTD012003EN, June 2015
Digitrip 210+ Circuit BreakerTime/Current Curves (Phase Current)
Series C F-frame circuit breakers (100A and 225A)
CatalogTypes: FDE, HFDE 	 Profiles: P, Q
Trip UnitTypes: 22 (LSI)
UL/CSA rms Sym. kA, 50/60 Hz
FDE
HFDE
240Vac	480Vac	600Vac	250VdcBreakerType
Interrupting Rating
65	 35	 18	—
100	 65	 25	—
A	 40A	100A
B	 50A	110A
C	 60A	125A
D	 70A	150A
E	 80A	175A
F	 90A	200A
G	 100A	225A
Rated Amperes
Ir
	 100A	225A
J	2	150
K	2	300
L	2	I2
t
M	4	 Inst
N	4	 150
O	4	I2
t
P	6	Inst
Q	6	300
R	 10	150
S	 10	300
SD Profile	 Isd
(X lr
)	tsd
(ms)
Notes:
1		Curve accuracy applies from -20C to +55C. Temperatures above +105C cause an 	
		overtemperature protection trip.	
2		There is a memory effect that can act to shorten the long delay. Approximately five 	
		minutes is required between overloads to completely reset this thermal memory.
3		Total clearing times shown include the response times of the trip unit, the breaker 	
		opening, and the interruption of the current.
4		Short delay pickups settings in multiples of Ir
± 10%. Short delay time accuracy 	
		+0ms/-30ms
5		For high fault current levels an additional fixed instantaneous hardware override is 	
		provided at 2500A ±10%.
12
Time Current Curves TC01200002E
Effective March 2018
Series C
F-Frame
EATON www.eaton.com
0.01
0.1
1
10
100
1000
10000
1 10 100
TimeinSeconds
Current in Multiples of Ir
Minimum
Commit Time
Maximum total
clearing time
I2T ShortDelay
0.001
0.01
0.1
1
1000 10000 100000
Current in Amps
Interrupting
Rating
Determines
End of Curve
Fixed Instantaneous
Override
600V
480V
240V
4x
2x
Long Delay Pickup
@ 115% Ir ± 5%
Long Delay
@ 6×Ir +0%/-30%
Figure 9. Digitrip 210+Trip Units (100 & 225A), Long Delay and Short Delay with I2t Response and Override (LSI, Profiles L, O)
Curve NumberTD012004EN, June 2015
Digitrip 210+ Circuit BreakerTime/Current Curves (Phase Current)
Series C F-frame circuit breakers (100A and 225A)
CatalogTypes: FDE, HFDE 	 Profiles: L, O
Trip UnitTypes: 22 (LSI)
UL/CSA rms Sym. kA, 50/60 Hz
FDE
HFDE
240Vac	480Vac	600Vac	250VdcBreakerType
Interrupting Rating
65	 35	 18	—
100	 65	 25	—
A	 40A	100A
B	 50A	110A
C	 60A	125A
D	 70A	150A
E	 80A	175A
F	 90A	200A
G	 100A	225A
Rated Amperes
Ir
	 100A	225A
J	2	150
K	2	300
L	2	I2
t
M	4	 Inst
N	4	 150
O	4	I2
t
P	6	Inst
Q	6	300
R	 10	150
S	 10	300
SD Profile	 Isd
(X lr
)	tsd
(ms)
Notes:
1		Curve accuracy applies from -20C to +55C. Temperatures above +105C cause an 	
		overtemperature protection trip.	
2		There is a memory effect that can act to shorten the long delay. Approximately five 	
		minutes is required between overloads to completely reset this thermal memory.
3		Total clearing times shown include the response times of the trip unit, the breaker 	
		opening, and the interruption of the current.
4		Short delay pickups settings in multiples of Ir
± 10%. Short delay time accuracy 	
		+0ms/-30ms
5		For high fault current levels an additional fixed instantaneous hardware override is 	
		provided at 2500A ±10%.
13
Time Current Curves TC01200002E
Effective March 2018
Series C
F-Frame
EATON www.eaton.com
0.01
0.1
1
10
100
1000
10000
1 10 100
TimeinSeconds
Current in Multiples of In
2×
3×
3.5x
2.5x
4×
5×
6×
8×
10×
12×
0.001
0.01
0.1
1
1000 10000 100000
Current in Amps
Interrupting
Rating
Determines
End of Curve
Fixed Instantaneous
Override
Long Delay Pickup
@ 115% Ir ± 5%
Long Delay
@ 6×Ir +0%/-30%
Instantaneous
Pickup ± 10%
600V
480V
240V
Figure 10. Digitrip 210+Trip Units (100 & 150A), Long Delay, Instantaneous Pickups and Override (LI)
Curve NumberTD012005EN, June 2015
Digitrip 210+ Circuit BreakerTime/Current Curves (Phase Current)
Series C F-frame circuit breakers (100A and 225A)
CatalogTypes: FDE, HFDE
Trip UnitTypes: 21 (LI)
UL/CSA rms Sym. kA, 50/60 Hz
FDE
HFDE
240Vac	480Vac	600Vac	250VdcBreakerType
Interrupting Rating
65	 35	 18	—
100	 65	 25	—
J	2	200A
K	 2.5	250A
L	3	300A
M	 3.5	350A
N	4	 400A
O	5	500A
P	6	600A
Q	8	800A
R	 10	1000A
S	 12	1200A
Override		 2500A
J	2	300A
K	 2.5	375A
L	3	450A
M	 3.5	525A
N	4	 600A
O	5	750A
P	6	900A
Q	8	1200A
R	 10	1500A
S	 12	1800A
Override		 2500A
100A
Setting	li(xln)	 Level
150A
Setting	li(xln)	 Level
Notes:
1		Curve accuracy applies from -20C to +55C. Temperatures above +105C cause an 	
		overtemperature protection trip.	
2		There is a thermal memory effect that can act to shorten the long delay. The amount 	
		of time delay reduction is inversely proportional to the amount of time that has 	
		elapsed since the previous overload. Approximately five minutes is required 	
		between overloads to completely reset this thermal memory effect.
3		Total clearing times shown include the response times of the trip unit, the breaker 	
		opening, and the interruption of the current.
4		For high fault current levels an additional fixed instantaneous hardware override is 	
		provided at 2400A ±20% (corresponding to 11xlr 225A frame, 16xlr for 150A frame, 	
		and 24xlr for 100A frame).
A	 40A	70A
B	 50A	80A
C	 60A	90A
D	 70A	100A
E	 80A	110A
F	 90A	125A
G	 100A	150A
Rated Amperes
Ir
	 100A	150A
14
Time Current Curves TC01200002E
Effective March 2018
Series C
F-Frame
EATON www.eaton.com
0.01
0.1
1
10
100
1000
10000
1 10 100
TimeinSeconds
Current in Multiples of In
2×
2.5×
3.5×
3×
4×
5×
6×
8×
10×
Long Delay Pickup
@ 115% Ir ± 5%
Long Delay
@ 6×Ir +0%/-30%
0.001
0.01
0.1
1
1000 10000 100000
Current in Amps
Interrupting
Rating
Determines
End of Curve
Fixed Instantaneous
Override
600V
480V
240V
Instantaneous
Pickup ±10%
Figure 11. Digitrip 210+Trip Units (225A), Long Delay, Instantaneous Pickups and Override (LI)
Curve NumberTD012006EN, June 2015
Digitrip 210+ Circuit BreakerTime/Current Curves (Phase Current)
Series C F-frame circuit breakers (225A)
CatalogTypes: FDE, HFDE
Trip UnitTypes: 21 (LSI)
UL/CSA rms Sym. kA, 50/60 Hz
FDE
HFDE
240Vac	480Vac	600Vac	250VdcBreakerType
Interrupting Rating
65	 35	 18	—
100	 65	 25	—
A	 40A	100A
B	 50A	110A
C	 60A	125A
D	 70A	150A
E	 80A	175A
F	 90A	200A
G	 100A	225A
Rated Amperes
Ir
	 100A	225A
J	2	450A
K	 2.5	565A
L	3	675A
M	 3.5	790A
N	4	 900A
O	5	1125A
P	6	1350A
Q	8	1800A
R	 10	2250A
S	 Override	2500A
Override		 2500A
Setting	li(xln)	 Level
Notes:
1		Curve accuracy applies from -20C to +55C. Temperatures above +105C cause an 	
		overtemperature protection trip.	
2		There is a thermal memory effect that can act to shorten the long delay. The amount 	
		of time delay reduction is inversely proportional to the amount of time that has 	
		elapsed since the previous overload. Approximately five minutes is required 	
		between overloads to completely reset this thermal memory effect.
3		Total clearing times shown include the response times of the trip unit, the breaker 	
		opening, and the interruption of the current.
4		For high fault current levels an additional fixed instantaneous hardware override is 	
		provided at 2400A ±20% (corresponding to 11xlr 225A frame, 16xlr for 150A frame, 	
		and 24xlr for 100A frame).
15
Time Current Curves TC01200002E
Effective March 2018
Series C
F-Frame
EATON www.eaton.com
Minimum Maximum
Interrupting
rating
determines
end of curve
100
50
30
20
10
5
3
2
1
.5
.3
.2
.1
.05
.03
.02
.01
.005
.003
.002
.001
TIMEINSECONDS
1,000
500
300
200
5,000
3,000
2,000
1HOUR1MINUTE2HOURS
10000
8000
6000
9000
7000
5000
4000
3000
2000
1000
800
600
900
700
500
400
300
200
100
8060 907050403020109875 6
TIMEINSECONDS
10,000
100
50
30
20
10
5
3
2
1
.5
.3
.2
.1
.05
.03
.02
.01
.005
.003
.002
.001
1,000
500
300
200
5,000
3,000
2,000
1HOUR1MINUTE2HOURS
CURRENT IN AMPERES
10000
8000
6000
9000
7000
5000
4000
3000
2000
1000
800
600
900
700
500
400
300
200
100
8060 907050403020109875 6
15A
Maximum single-
pole trip times
at 25°C 1
CURRENT IN AMPERES
Maximum interrupting time
Figure 12. Single Pole, Series C,Types EHD, FD, and HFD 15A—Curve Number SC-4423-88A
Circuit breaker time/current curves
Series C F-frame circuit breakers
CatalogTypes: EHD, FD and HFD circuit breakers, single-pole.
For application and coordination purposes only. Based on 40°C ambient, cold start.
Connected with four (4) feet of rated wire (60°C up to 100A, 75°C above 125A) per
terminal. Tested in open air.
Maximum Vac: 277 at 50/60 Hz
Maximum Vdc: 125
Notes:
1		Single-pole test data at 25°C based on NEMA procedures (AB 4-2003) for verifying
		performance of molded case circuit breakers.
Symmetrical RMS amperes (kA)	 DC Amps
EHD	
FD
HFD
277V			125VBreakerType
Interrupting Rating (UL/CSA Listed)
15A		 See curve
Breaker rating
Continuous amperes	 Instantaneous trip, amperes
14			 10
35			 10
65			 10
16
Time Current Curves TC01200002E
Effective March 2018
Series C
F-Frame
EATON www.eaton.com
Minimum Maximum
Interrupting
rating
determines
end of curve
Maximum
interrupting
time
100
50
30
20
10
5
3
2
1
.5
.3
.2
.1
.05
.03
.02
.01
.005
.003
.002
.001
TIMEINSECONDS
1,000
500
300
200
5,000
3,000
2,000
1HOUR1MINUTE2HOURS
10000
8000
6000
9000
7000
5000
4000
3000
2000
1000
800
600
900
700
500
400
300
200
100
8060 907050403020109875 6
TIMEINSECONDS10,000
100
50
30
20
10
5
3
2
1
.5
.3
.2
.1
.05
.03
.02
.01
.005
.003
.002
.001
1,000
500
300
200
5,000
3,000
2,000
1HOUR1MINUTE2HOURS
CURRENT IN AMPERES
10000
8000
6000
9000
7000
5000
4000
3000
2000
1000
800
600
900
700
500
400
300
200
100
8060 907050403020109875 6
20A
Maximum single-
pole trip times
at 25°C 1
CURRENT IN AMPERES
Figure 13. Single Pole, Series C,Types EHD, FD, and HFD 20A—Curve Number SC-4424-88A
Circuit breaker time/current curves
Series C F-frame circuit breakers
CatalogTypes: EHD, FD and HFD circuit breakers, single-pole.
For application and coordination purposes only. Based on 40°C ambient, cold start.
Connected with four (4) feet of rated wire (60°C up to 100A, 75°C above 125A) per
terminal. Tested in open air.
Maximum Vac: 277 at 50/60 Hz
Maximum Vdc: 125
Notes:
1		Single-pole test data at 25°C based on NEMA procedures (AB 4-2003) for verifying
		performance of molded case circuit breakers.
Symmetrical RMS amperes (kA)	 DC Amps
EHD	
FD
HFD
277V			125VBreakerType
Interrupting Rating (UL/CSA Listed)
20A		 See curve
Breaker rating
Continuous amperes	 Instantaneous trip, amperes
14			 10
35			 10
65			 10
17
Time Current Curves TC01200002E
Effective March 2018
Series C
F-Frame
EATON www.eaton.com
Interrupting
rating
determines
end of curve
Minimum Maximum
100
50
30
20
10
5
3
2
1
.5
.3
.2
.1
.05
.03
.02
.01
.005
.003
.002
.001
TIMEINSECONDS
1,000
500
300
200
5,000
3,000
2,000
1HOUR1MINUTE2HOURS
10000
8000
6000
9000
7000
5000
4000
3000
2000
1000
800
600
900
700
500
400
300
200
100
8060 907050403020109875 6
TIMEINSECONDS
10,000
100
50
30
20
10
5
3
2
1
.5
.3
.2
.1
.05
.03
.02
.01
.005
.003
.002
.001
1,000
500
300
200
5,000
3,000
2,000
1HOUR1MINUTE2HOURS
CURRENT IN AMPERES
10000
8000
6000
9000
7000
5000
4000
3000
2000
1000
800
600
900
700
500
400
300
200
100
8060 907050403020109875 6
25A
Maximum single-
pole t rip ti mes
at 25°C 1
CURRENT IN AMPERES
Maximum interrupting time
Figure 14. Single Pole, Series C,Types EHD, FD, and HFD 25A—Curve No. SC-4425-88A
Circuit breaker time/current curves
Series C F-frame circuit breakers
CatalogTypes: EHD, FD and HFD circuit breakers, single-pole.
For application and coordination purposes only. Based on 40°C ambient, cold start.
Connected with four (4) feet of rated wire (60°C up to 100A, 75°C above 125A) per
terminal. Tested in open air.
Maximum Vac: 277 at 50/60 Hz
Maximum Vdc: 125
Notes:
1		Single-pole test data at 25°C based on NEMA procedures (AB 4-2003) for verifying
		performance of molded case circuit breakers.
Symmetrical RMS amperes (kA)	 DC Amps
EHD	
FD
HFD
277V			125VBreakerType
Interrupting Rating (UL/CSA Listed)
25A		 See curve
Breaker rating
Continuous amperes	 Instantaneous trip, amperes
14			 10
35			 10
65			 10
18
Time Current Curves TC01200002E
Effective March 2018
Series C
F-Frame
EATON www.eaton.com
Interrupting
rating
determines
end of curve
Minimum Maximum
100
50
30
20
10
5
3
2
1
.5
.3
.2
.1
.05
.03
.02
.01
.005
.003
.002
.001
TIMEINSECONDS
1,000
500
300
200
5,000
3,000
2,000
1HOUR1MINUTE2HOURS
10000
8000
6000
9000
7000
5000
4000
3000
2000
1000
800
600
900
700
500
400
300
200
100
8060 907050403020109875 6
TIMEINSECONDS10,000
100
50
30
20
10
5
3
2
1
.5
.3
.2
.1
.05
.03
.02
.01
.005
.003
.002
.001
1,000
500
300
200
5,000
3,000
2,000
1HOUR1MINUTE2HOURS
CURRENT IN AMPERES
10000
8000
6000
9000
7000
5000
4000
3000
2000
1000
800
600
900
700
500
400
300
200
100
8060 907050403020109875 6
30A
Maximum single-
pole trip times
at 25°C 1
CURRENT IN AMPERES
Maximum interrupting time
Figure 15. Single Pole, Series C,Types EHD, FD, and HFD 30A—Curve Number SC-4426-88A
Circuit breaker time/current curves
Series C F-frame circuit breakers
CatalogTypes: EHD, FD and HFD circuit breakers, single-pole.
For application and coordination purposes only. Based on 40°C ambient, cold start.
Connected with four (4) feet of rated wire (60°C up to 100A, 75°C above 125A) per
terminal. Tested in open air.
Maximum Vac: 277 at 50/60 Hz
Maximum Vdc: 125
Notes:
1		Single-pole test data at 25°C based on NEMA procedures (AB 4-2003) for verifying
		performance of molded case circuit breakers.
Symmetrical RMS amperes (kA)	 DC Amps
EHD	
FD
HFD
277V			125VBreakerType
Interrupting Rating (UL/CSA Listed)
30A		 See curve
Breaker rating
Continuous amperes	 Instantaneous trip, amperes
14			 10
35			 10
65			 10
19
Time Current Curves TC01200002E
Effective March 2018
Series C
F-Frame
EATON www.eaton.com
Interrupting
rating
determines
end of curve
Maximum
interrupting
time
Minimum Maximum
100
50
30
20
10
5
3
2
1
.5
.3
.2
.1
.05
.03
.02
.01
.005
.003
.002
.001
TIMEINSECONDS
1,000
500
300
200
5,000
3,000
2,000
1HOUR1MINUTE2HOURS
10000
8000
6000
9000
7000
5000
4000
3000
2000
1000
800
600
900
700
500
400
300
200
100
8060 907050403020109875 6
TIMEINSECONDS
10,000
100
50
30
20
10
5
3
2
1
.5
.3
.2
.1
.05
.03
.02
.01
.005
.003
.002
.001
1,000
500
300
200
5,000
3,000
2,000
1HOUR1MINUTE2HOURS
CURRENT IN AMPERES
10000
8000
6000
9000
7000
5000
4000
3000
2000
1000
800
600
900
700
500
400
300
200
100
8060 907050403020109875 6
35A
Maximum single-
pole trip times
at 25°C 1
CURRENT IN AMPERES
Catalog types EHD, FD and HFD circuit breakers, single-pole.
For application and coordination purposes only.
Based on 40˚C ambient, cold start. Connected with four (4) feet of
rated wire (60˚C up to 100A, 75˚C above 125A) per terminal.
Tested in open air.
Maximum Vac : 277 at 50/60 Hz
Maximum Vdc: 125
Breaker rating
Continuous
amperes Instantaneous trip, amperes
35A See curve
Breaker
type
Symmetrical Rms amperes (kA )
14
35
65
EHD
FD
HFD
10
10
10
Single-pole test data at 25˚C based on NEMA procedures
(AB 4-2003
circuit
277V
DC amps
125V
Interrupting rating (UL/CSA listed)
Figure 16. Single Pole, Series C,Types EHD, FD, and HFD 35A—Curve Number SC-4427-88A
Circuit breaker time/current curves
Series C F-frame circuit breakers
CatalogTypes: EHD, FD and HFD circuit breakers, single-pole.
For application and coordination purposes only. Based on 40°C ambient, cold start.
Connected with four (4) feet of rated wire (60°C up to 100A, 75°C above 125A) per
terminal. Tested in open air.
Maximum Vac: 277 at 50/60 Hz
Maximum Vdc: 125
Notes:
1		Single-pole test data at 25°C based on NEMA procedures (AB 4-2003) for verifying
		performance of molded case circuit breakers.
Symmetrical RMS amperes (kA)	 DC Amps
EHD	
FD
HFD
277V			125VBreakerType
Interrupting Rating (UL/CSA Listed)
35A		 See curve
Breaker rating
Continuous amperes	 Instantaneous trip, amperes
14			 10
35			 10
65			 10
20
Time Current Curves TC01200002E
Effective March 2018
Series C
F-Frame
EATON www.eaton.com
Interrupting
rating
determines
end of curve
Minimum Maximum
100
50
30
20
10
5
3
2
1
.5
.3
.2
.1
.05
.03
.02
.01
.005
.003
.002
.001
TIMEINSECONDS
1,000
500
300
200
5,000
3,000
2,000
1HOUR1MINUTE2HOURS
10000
8000
6000
9000
7000
5000
4000
3000
2000
1000
800
600
900
700
500
400
300
200
100
8060 907050403020109875 6
TIMEINSECONDS
10,000
100
50
30
20
10
5
3
2
1
.5
.3
.2
.1
.05
.03
.02
.01
.005
.003
.002
.001
1,000
500
300
200
5,000
3,000
2,000
1HOUR1MINUTE2HOURS
CURRENT IN AMPERES
10000
8000
6000
9000
7000
5000
4000
3000
2000
1000
800
600
900
700
500
400
300
200
100
8060 907050403020109875 6
40A
Maximum single-
pole trip times
at 25°C 1
CURRENT IN AMPERES
Maximum interrupting time
Circuit breaker time/current curves
Series C
®
F-frame circuit breakers
Catalog types EHD, FD and HFD circuit breakers, single-pole.
For application and coordination purposes only.
Based on 40˚C ambient, cold start. Connected with four (4) feet of
rated wire (60˚C up to 100A, 75˚C above 125A) per terminal.
Tested in open air.
Maximum Vac: 277 at 50/60 Hz
Maximum Vdc: 125
Breaker rating
Continuous
amperes Instantaneous trip, amperes
40A See curve
Breaker
type
Symmetrical Rms amperes (kA )
14
35
65
EHD
FD
HFD
10
10
10
Single-pole test data at 25˚C based on NEMA procedures
(AB 4-2003) for verifying performance of molded case
circuit breakers.
277V
DC amps
125V
Interrupting rating (UL/CSA listed)
Figure 17. Single Pole, Series C,Types EHD, FD, and HFD 40A—Curve Number SC-4428-88A
Circuit breaker time/current curves
Series C F-frame circuit breakers
CatalogTypes: EHD, FD and HFD circuit breakers, single-pole.
For application and coordination purposes only. Based on 40°C ambient, cold start.
Connected with four (4) feet of rated wire (60°C up to 100A, 75°C above 125A) per
terminal. Tested in open air.
Maximum Vac: 277 at 50/60 Hz
Maximum Vdc: 125
Notes:
1		Single-pole test data at 25°C based on NEMA procedures (AB 4-2003) for verifying
		performance of molded case circuit breakers.
Symmetrical RMS amperes (kA)	 DC Amps
EHD	
FD
HFD
277V			125VBreakerType
Interrupting Rating (UL/CSA Listed)
40A		 See curve
Breaker rating
Continuous amperes	 Instantaneous trip, amperes
14			 10
35			 10
65			 10
21
Time Current Curves TC01200002E
Effective March 2018
Series C
F-Frame
EATON www.eaton.com
Interrupting
rating
determines
end of curve
Minimum Maximum
100
50
30
20
10
5
3
2
1
.5
.3
.2
.1
.05
.03
.02
.01
.005
.003
.002
.001
TIMEINSECONDS
1,000
500
300
200
5,000
3,000
2,000
1HOUR1MINUTE2HOURS
10000
8000
6000
9000
7000
5000
4000
3000
2000
1000
800
600
900
700
500
400
300
200
100
8060 907050403020109875 6
TIMEINSECONDS
10,000
100
50
30
20
10
5
3
2
1
.5
.3
.2
.1
.05
.03
.02
.01
.005
.003
.002
.001
1,000
500
300
200
5,000
3,000
2,000
1HOUR1MINUTE2HOURS
CURRENT IN AMPERES
10000
8000
6000
9000
7000
5000
4000
3000
2000
1000
800
600
900
700
500
400
300
200
100
8060 907050403020109875 6
45A
Maximum single-
pole trip times
at 25°C 1
CURRENT IN AMPERES
Maximum interrupting time
Circuit breaker time/current curves
Series C ®
F-frame circuit breakers
Catalog types EHD, FD and HFD circuit breakers, single-pole.
For application and coordination purposes only.
Based on 40˚C ambient, cold start. Connected with four (4) feet of
rated wire (60˚C up to 100A, 75˚C above 125A) per terminal.
Tested in open air.
Maximum Vac : 277 at 50/60 Hz
Maximum Vdc : 125
Breaker rating
Continuous
amperes Instantaneous trip, amperes
45A See curve
Breaker
type
Symmetrical Rms amperes (kA )
14
35
65
EHD
FD
HFD
10
10
10
Single-pole test data at 25˚C based on NEMA procedures
(AB 4-2003) for verifying performance of molded case
circuit breakers.
277V
DC amps
125V
Interrupting rating (UL/CSA listed)
Figure 18. Single Pole, Series C,Types EHD, FD, and HFD 45A—Curve No. SC-4429-88A
Circuit breaker time/current curves
Series C F-frame circuit breakers
CatalogTypes: EHD, FD and HFD circuit breakers, single-pole.
For application and coordination purposes only. Based on 40°C ambient, cold start.
Connected with four (4) feet of rated wire (60°C up to 100A, 75°C above 125A) per
terminal. Tested in open air.
Maximum Vac: 277 at 50/60 Hz
Maximum Vdc: 125
Notes:
1		Single-pole test data at 25°C based on NEMA procedures (AB 4-2003) for verifying
		performance of molded case circuit breakers.
Symmetrical RMS amperes (kA)	 DC Amps
EHD	
FD
HFD
277V			125VBreakerType
Interrupting Rating (UL/CSA Listed)
45A		 See curve
Breaker rating
Continuous amperes	 Instantaneous trip, amperes
14			 10
35			 10
65			 10
22
Time Current Curves TC01200002E
Effective March 2018
Series C
F-Frame
EATON www.eaton.com
Interrupting
rating
determines
end of curve
Minimum Maximum
100
50
30
20
10
5
3
2
1
.5
.3
.2
.1
.05
.03
.02
.01
.005
.003
.002
.001
TIMEINSECONDS
1,000
500
300
200
5,000
3,000
2,000
1HOUR1MINUTE2HOURS
10000
8000
6000
9000
7000
5000
4000
3000
2000
1000
800
600
900
700
500
400
300
200
100
8060 907050403020109875 6
TIMEINSECONDS
10,000
100
50
30
20
10
5
3
2
1
.5
.3
.2
.1
.05
.03
.02
.01
.005
.003
.002
.001
1,000
500
300
200
5,000
3,000
2,000
1HOUR1MINUTE2HOURS
CURRENT IN AMPERES
10000
8000
6000
9000
7000
5000
4000
3000
2000
1000
800
600
900
700
500
400
300
200
100
8060 907050403020109875 6
50A
Maximum single-
pole trip times
at 25°C 1
CURRENT IN AMPERES
Maximum interrupting time
Circuit breaker time/current curves
Series C
®
F-frame circuit breakers
Catalog types EHD, FD and HFD circuit breakers, single-pole.
For application and coordination purposes only.
Based on 40˚C ambient, cold start. Connected with four (4) feet of
rated wire (60˚C up to 100A, 75˚C above 125A) per terminal.
Tested in open air.
Maximum Vac: 277 at 50/60 Hz
Maximum Vdc: 125
Breaker rating
Continuous
amperes Instantaneous trip, amperes
50A See curve
Breaker
type
Symmetrical Rms amperes (kA )
14
35
65
EHD
FD
HFD
10
10
10
Single-pole test data at 25˚C based on NEMA procedures
(AB 4-2003) for verifying performance of molded case
circuit breakers.
277V
DC amps
125V
Interrupting rating (UL/CSA listed)
Figure 19. Single Pole, Series C,Types EHD, FD, and HFD 50A—Curve Number SC-4430-88A
Circuit breaker time/current curves
Series C F-frame circuit breakers
CatalogTypes: EHD, FD and HFD circuit breakers, single-pole.
For application and coordination purposes only. Based on 40°C ambient, cold start.
Connected with four (4) feet of rated wire (60°C up to 100A, 75°C above 125A) per
terminal. Tested in open air.
Maximum Vac: 277 at 50/60 Hz
Maximum Vdc: 125
Notes:
1		Single-pole test data at 25°C based on NEMA procedures (AB 4-2003) for verifying
		performance of molded case circuit breakers.
Symmetrical RMS amperes (kA)	 DC Amps
EHD	
FD
HFD
277V			125VBreakerType
Interrupting Rating (UL/CSA Listed)
50A		 See curve
Breaker rating
Continuous amperes	 Instantaneous trip, amperes
14			 10
35			 10
65			 10
23
Time Current Curves TC01200002E
Effective March 2018
Series C
F-Frame
EATON www.eaton.com
Interrupting
rating
determines
end of curve
Minimum Maximum
100
50
30
20
10
5
3
2
1
.5
.3
.2
.1
.05
.03
.02
.01
.005
.003
.002
.001
TIMEINSECONDS
1,000
500
300
200
5,000
3,000
2,000
1HOUR1MINUTE2HOURS
10000
8000
6000
9000
7000
5000
4000
3000
2000
1000
800
600
900
700
500
400
300
200
100
8060 907050403020109875 6
TIMEINSECONDS
10,000
100
50
30
20
10
5
3
2
1
.5
.3
.2
.1
.05
.03
.02
.01
.005
.003
.002
.001
1,000
500
300
200
5,000
3,000
2,000
1HOUR1MINUTE2HOURS
CURRENT IN AMPERES
10000
8000
6000
9000
7000
5000
4000
3000
2000
1000
800
600
900
700
500
400
300
200
100
8060 907050403020109875 6
60A
Maximum single-
pole trip times
at 25°C 1
CURRENT IN AMPERES
Maximum interrupting time
Circuit breaker time/current curves
Series C
®
F-frame circuit breakers
Catalog types EHD, FD and HFD circuit breakers, single-pole.
For application and coordination purposes only.
Based on 40˚C ambient, cold start. Connected with four (4) feet of
rated wire (60˚C up to 100A, 75˚C above 125A) per terminal.
Tested in open air.
Maximum Vac: 277 at 50/60 Hz
Maximum Vdc: 125
Breaker rating
Continuous
amperes Instantaneous trip, amperes
60A See curve
Single-pole test data at 25˚C based on NEMA procedures
(AB 4-2003) for verifying performance of molded case
circuit breakers.
Breaker
type
Symmetrical Rms amperes (kA )
14
35
65
EHD
FD
HFD
10
10
10
277V
DC amps
125V
Interrupting rating (UL/CSA listed)
Figure 20. Single Pole, Series C,Types EHD, FD, and HFD 60A—Curve Number SC-4431-88A
Circuit breaker time/current curves
Series C F-frame circuit breakers
CatalogTypes: EHD, FD and HFD circuit breakers, single-pole.
For application and coordination purposes only. Based on 40°C ambient, cold start.
Connected with four (4) feet of rated wire (60°C up to 100A, 75°C above 125A) per
terminal. Tested in open air.
Maximum Vac: 277 at 50/60 Hz
Maximum Vdc: 125
Notes:
1		Single-pole test data at 25°C based on NEMA procedures (AB 4-2003) for verifying
		performance of molded case circuit breakers.
Symmetrical RMS amperes (kA)	 DC Amps
EHD	
FD
HFD
277V			125VBreakerType
Interrupting Rating (UL/CSA Listed)
60A		 See curve
Breaker rating
Continuous amperes	 Instantaneous trip, amperes
14			 10
35			 10
65			 10
24
Time Current Curves TC01200002E
Effective March 2018
Series C
F-Frame
EATON www.eaton.com
Interrupting
rating
determines
end of curve
Minimum Maximum
100
50
30
20
10
5
3
2
1
.5
.3
.2
.1
.05
.03
.02
.01
.005
.003
.002
.001
TIMEINSECONDS
1,000
500
300
200
5,000
3,000
2,000
1HOUR1MINUTE2HOURS
10000
8000
6000
9000
7000
5000
4000
3000
2000
1000
800
600
900
700
500
400
300
200
100
8060 907050403020109875 6
TIMEINSECONDS10,000
100
50
30
20
10
5
3
2
1
.5
.3
.2
.1
.05
.03
.02
.01
.005
.003
.002
.001
1,000
500
300
200
5,000
3,000
2,000
1HOUR1MINUTE2HOURS
CURRENT IN AMPERES
10000
8000
6000
9000
7000
5000
4000
3000
2000
1000
800
600
900
700
500
400
300
200
100
8060 907050403020109875 6
70A
Maximum single-
pole trip times
at 25°C 1
CURRENT IN AMPERES
Maximum
interrupting
time
Circuit breaker time/current curves
Series C ®
F-frame circuit breakers
Catalog types EHD, FD and HFD circuit breakers, single-pole.
For application and coordination purposes only.
Based on 40˚C ambient, cold start. Connected with four (4) feet of
rated wire (60˚C up to 100A, 75˚C above 125A) per terminal.
Tested in open air.
Maximum Vac: 277 at 50/60 Hz
Maximum Vdc: 125
Breaker rating
Continuous
amperes Instantaneous trip, amperes
70A See curve
Single-pole test data at 25˚C based on NEMA procedures
(AB 4-2003) for verifying performance of molded case
circuit breakers.
Breaker
type
Symmetrical Rms amperes (kA )
14
35
65
EHD
FD
HFD
10
10
10
277V
DC amps
125V
Interrupting rating (UL/CSA listed)
Figure 21. Single Pole, Series C,Types EHD, FD, and HFD 70A—Curve Number SC-4432-88A
Circuit breaker time/current curves
Series C F-frame circuit breakers
CatalogTypes: EHD, FD and HFD circuit breakers, single-pole.
For application and coordination purposes only. Based on 40°C ambient, cold start.
Connected with four (4) feet of rated wire (60°C up to 100A, 75°C above 125A) per
terminal. Tested in open air.
Maximum Vac: 277 at 50/60 Hz
Maximum Vdc: 125
Notes:
1		Single-pole test data at 25°C based on NEMA procedures (AB 4-2003) for verifying
		performance of molded case circuit breakers.
Symmetrical RMS amperes (kA)	 DC Amps
EHD	
FD
HFD
277V			125VBreakerType
Interrupting Rating (UL/CSA Listed)
70A		 See curve
Breaker rating
Continuous amperes	 Instantaneous trip, amperes
14			 10
35			 10
65			 10
25
Time Current Curves TC01200002E
Effective March 2018
Series C
F-Frame
EATON www.eaton.com
Interrupting
rating
determines
end of curve
Minimum Maximum
100
50
30
20
10
5
3
2
1
.5
.3
.2
.1
.05
.03
.02
.01
.005
.003
.002
.001
TIMEINSECONDS
1,000
500
300
200
5,000
3,000
2,000
1HOUR1MINUTE2HOURS
10000
8000
6000
9000
7000
5000
4000
3000
2000
1000
800
600
900
700
500
400
300
200
100
8060 907050403020109875 6
TIMEINSECONDS
10,000
100
50
30
20
10
5
3
2
1
.5
.3
.2
.1
.05
.03
.02
.01
.005
.003
.002
.001
1,000
500
300
200
5,000
3,000
2,000
1HOUR1MINUTE2HOURS
CURRENT IN AMPERES
10000
8000
6000
9000
7000
5000
4000
3000
2000
1000
800
600
900
700
500
400
300
200
100
8060 907050403020109875 6
80A
Maximum single-
pole trip times
at 25°C 1
CURRENT IN AMPERES
Maximum
interrupting
time
Circuit breaker time/current curves
Series C ®
F-frame circuit breakers
Catalog types EHD, FD and HFD circuit breakers, single-pole.
For application and coordination purposes only.
Based on 40˚C ambient, cold start. Connected with four (4) feet of
rated wire (60˚C up to 100A, 75˚C above 125A) per terminal.
Tested in open air.
Maximum Vac: 277 at 50/60 Hz
Maximum Vdc: 125
Breaker rating
Continuous
amperes Instantaneous trip, amperes
80A See curve
Single-pole test data at 25˚C based on NEMA procedures
(AB 4-2003) for verifying performance of molded case
circuit breakers.
Breaker
type
Symmetrical Rms amperes (kA )
14
35
65
EHD
FD
HFD
10
10
10
277V
DC amps
125V
Interrupting rating (UL/CSA listed)
Figure 22. Single Pole, Series C,Types EHD, FD, and HFD 80A—Curve Number SC-4433-88A
Circuit breaker time/current curves
Series C F-frame circuit breakers
CatalogTypes: EHD, FD and HFD circuit breakers, single-pole.
For application and coordination purposes only. Based on 40°C ambient, cold start.
Connected with four (4) feet of rated wire (60°C up to 100A, 75°C above 125A) per
terminal. Tested in open air.
Maximum Vac: 277 at 50/60 Hz
Maximum Vdc: 125
Notes:
1		Single-pole test data at 25°C based on NEMA procedures (AB 4-2003) for verifying
		performance of molded case circuit breakers.
Symmetrical RMS amperes (kA)	 DC Amps
EHD	
FD
HFD
277V			125VBreakerType
Interrupting Rating (UL/CSA Listed)
80A		 See curve
Breaker rating
Continuous amperes	 Instantaneous trip, amperes
14			 10
35			 10
65			 10
26
Time Current Curves TC01200002E
Effective March 2018
Series C
F-Frame
EATON www.eaton.com
Interrupting
rating
determines
end of curve
Minimum Maximum
100
50
30
20
10
5
3
2
1
.5
.3
.2
.1
.05
.03
.02
.01
.005
.003
.002
.001
TIMEINSECONDS
1,000
500
300
200
5,000
3,000
2,000
1HOUR1MINUTE2HOURS
10000
8000
6000
9000
7000
5000
4000
3000
2000
1000
800
600
900
700
500
400
300
200
100
8060 907050403020109875 6
TIMEINSECONDS10,000
100
50
30
20
10
5
3
2
1
.5
.3
.2
.1
.05
.03
.02
.01
.005
.003
.002
.001
1,000
500
300
200
5,000
3,000
2,000
1HOUR1MINUTE2HOURS
CURRENT IN AMPERES
10000
8000
6000
9000
7000
5000
4000
3000
2000
1000
800
600
900
700
500
400
300
200
100
8060 907050403020109875 6
90A
Maximum single-
pole trip times
at 25°C 1
CURRENT IN AMPERES
Maximum
interrupting
time
Circuit breaker time/current curves
Series C
®
F-frame circuit breakers
Catalog types EHD, FD and HFD circuit breakers, single-pole.
For application and coordination purposes only.
Based on 40˚C ambient, cold start. Connected with four (4) feet of
rated wire (60˚C up to 100A, 75˚C above 125A) per terminal.
Tested in open air.
Maximum Vac: 277 at 50/60 Hz
Maximum Vdc: 125
Breaker rating
Continuous
amperes Instantaneous trip, amperes
90A See curve
Single-pole test data at 25˚C based on NEMA procedures
(AB 4-2003) for verifying performance of molded case circuit
breakers.
Breaker
type
Symmetrical Rms amperes (kA )
14
35
65
EHD
FD
HFD
10
10
10
277V
DC amps
125V
Interrupting rating (UL/CSA listed)
Figure 23. Single Pole, Series C,Types EHD, FD, and HFD 90A—Curve Number SC-4434-88A
Circuit breaker time/current curves
Series C F-frame circuit breakers
CatalogTypes: EHD, FD and HFD circuit breakers, single-pole.
For application and coordination purposes only. Based on 40°C ambient, cold start.
Connected with four (4) feet of rated wire (60°C up to 100A, 75°C above 125A) per
terminal. Tested in open air.
Maximum Vac: 277 at 50/60 Hz
Maximum Vdc: 125
Notes:
1		Single-pole test data at 25°C based on NEMA procedures (AB 4-2003) for verifying
		performance of molded case circuit breakers.
Symmetrical RMS amperes (kA)	 DC Amps
EHD	
FD
HFD
277V			125VBreakerType
Interrupting Rating (UL/CSA Listed)
90A		 See curve
Breaker rating
Continuous amperes	 Instantaneous trip, amperes
14			 10
35			 10
65			 10
27
Time Current Curves TC01200002E
Effective March 2018
Series C
F-Frame
EATON www.eaton.com
Interrupting
rating
determines
end of curve
Minimum Maximum
100
50
30
20
10
5
3
2
1
.5
.3
.2
.1
.05
.03
.02
.01
.005
.003
.002
.001
TIMEINSECONDS
1,000
500
300
200
5,000
3,000
2,000
1HOUR1MINUTE2HOURS
10000
8000
6000
9000
7000
5000
4000
3000
2000
1000
800
600
900
700
500
400
300
200
100
8060 907050403020109875 6
TIMEINSECONDS
10,000
100
50
30
20
10
5
3
2
1
.5
.3
.2
.1
.05
.03
.02
.01
.005
.003
.002
.001
1,000
500
300
200
5,000
3,000
2,000
1HOUR1MINUTE2HOURS
CURRENT IN AMPERES
10000
8000
6000
9000
7000
5000
4000
3000
2000
1000
800
600
900
700
500
400
300
200
100
8060 907050403020109875 6
100A
Maximum single-
pole trip times
at 25°C 1
CURRENT IN AMPERES
Maximum
interrupting
time
Circuit breaker time/current curves
Series C
®
F-frame circuit breakers
Catalog types EHD, FD and HFD circuit breakers, single-pole.
For application and coordination purposes only.
Based on 40˚C ambient, cold start. Connected with four (4) feet of
rated wire (60˚C up to 100A, 75˚C above 125A) per terminal.
Tested in open air.
Maximum Vac: 277 at 50/60 Hz
Maximum Vdc: 125
Breaker rating
Continuous
amperes Instantaneous trip, amperes
100A See curve
Single-pole test data at 25˚C based on NEMA procedures
(AB 4-2003) for verifying performance of molded case
circuit breakers.
Breaker
type
Symmetrical Rms amperes (kA )
14
35
65
EHD
FD
HFD
10
10
10
277V
DC amps
125V
Interrupting rating (UL/CSA listed)
Figure 24. Single Pole, Series C,Types EHD, FD, and HFD 100A—Curve Number SC-4435-88A
Circuit breaker time/current curves
Series C F-frame circuit breakers
CatalogTypes: EHD, FD and HFD circuit breakers, single-pole.
For application and coordination purposes only. Based on 40°C ambient, cold start.
Connected with four (4) feet of rated wire (60°C up to 100A, 75°C above 125A) per
terminal. Tested in open air.
Maximum Vac: 277 at 50/60 Hz
Maximum Vdc: 125
Notes:
1		Single-pole test data at 25°C based on NEMA procedures (AB 4-2003) for verifying
		performance of molded case circuit breakers.
Symmetrical RMS amperes (kA)	 DC Amps
EHD	
FD
HFD
277V			125VBreakerType
Interrupting Rating (UL/CSA Listed)
100A		 See curve
Breaker rating
Continuous amperes	 Instantaneous trip, amperes
14			 10
35			 10
65			 10
28
Time Current Curves TC01200002E
Effective March 2018
Series C
F-Frame
EATON www.eaton.com
Interrupting
rating
determines
end of curve
Minimum Maximum
100
50
30
20
10
5
3
2
1
.5
.3
.2
.1
.05
.03
.02
.01
.005
.003
.002
.001
TIMEINSECONDS
1,000
500
300
200
5,000
3,000
2,000
1HOUR1MINUTE2HOURS
10000
8000
6000
9000
7000
5000
4000
3000
2000
1000
800
600
900
700
500
400
300
200
100
8060 907050403020109875 6
TIMEINSECONDS10,000
100
50
30
20
10
5
3
2
1
.5
.3
.2
.1
.05
.03
.02
.01
.005
.003
.002
.001
1,000
500
300
200
5,000
3,000
2,000
1HOUR1MINUTE2HOURS
CURRENT IN AMPERES
10000
8000
6000
9000
7000
5000
4000
3000
2000
1000
800
600
900
700
500
400
300
200
100
8060 907050403020109875 6
110A
Maximum single-
pole trip times
at 25°C 1
CURRENT IN AMPERES
Maximum
interrupting
time
®
F-frame circuit breakers
277 at 50/60 Hz
125
10
10
DC amps
125V
Figure 25. Single Pole, Series C,Types FD and HFD 110A—Curve Number SC-4436-88A
Circuit breaker time/current curves
Series C F-frame circuit breakers
CatalogTypes: EHD, FD and HFD circuit breakers, single-pole.
For application and coordination purposes only. Based on 40°C ambient, cold start.
Connected with four (4) feet of rated wire (60°C up to 100A, 75°C above 125A) per
terminal. Tested in open air.
Maximum Vac: 277 at 50/60 Hz
Maximum Vdc: 125
Notes:
1		Single-pole test data at 25°C based on NEMA procedures (AB 4-2003) for verifying
		performance of molded case circuit breakers.
Symmetrical RMS amperes (kA)	 DC Amps
FD
HFD
277V			125VBreakerType
Interrupting Rating (UL/CSA Listed)
110A		 See curve
Breaker rating
Continuous amperes	 Instantaneous trip, amperes
35			 10
65			 10
29
Time Current Curves TC01200002E
Effective March 2018
Series C
F-Frame
EATON www.eaton.com
Interrupting
rating
determines
end of curve
Minimum Maximum
100
50
30
20
10
5
3
2
1
.5
.3
.2
.1
.05
.03
.02
.01
.005
.003
.002
.001
TIMEINSECONDS
1,000
500
300
200
5,000
3,000
2,000
1HOUR1MINUTE2HOURS
10000
8000
6000
9000
7000
5000
4000
3000
2000
1000
800
600
900
700
500
400
300
200
100
8060 907050403020109875 6
TIMEINSECONDS
10,000
100
50
30
20
10
5
3
2
1
.5
.3
.2
.1
.05
.03
.02
.01
.005
.003
.002
.001
1,000
500
300
200
5,000
3,000
2,000
1HOUR1MINUTE2HOURS
CURRENT IN AMPERES
10000
8000
6000
9000
7000
5000
4000
3000
2000
1000
800
600
900
700
500
400
300
200
100
8060 907050403020109875 6
125A
Maximum single-
pole trip times
at 25°C 1
CURRENT IN AMPERES
Maximum
interrupting
time
®
F-frame circuit breakers
For application and coordination purposes only.
Based on 40˚C ambient, cold start. Connected with four (4) feet of
rated wire (60˚C up to 100A, 75˚C above 125A) per terminal.
Tested in open air.
Maximum Vac: 277 at 50/60 Hz
Maximum Vdc: 125
Breaker rating
Continuous
amperes Instantaneous trip, amperes
125A See curve
Single-pole test data at 25˚C based on NEMA procedures
(AB 4-2003) for verifying performance of molded case
circuit breakers.
Breaker
type
Symmetrical Rms amperes (kA )
35
65
FD
HFD
10
10
277V
DC amps
125V
Interrupting rating (UL/CSA listed)
Figure 26. Single Pole, Series C,Types FD and HFD 125A—Curve Number SC-4437-88A
Circuit breaker time/current curves
Series C F-frame circuit breakers
CatalogTypes: FD and HFD circuit breakers, single-pole.
For application and coordination purposes only. Based on 40°C ambient, cold start.
Connected with four (4) feet of rated wire (60°C up to 100A, 75°C above 125A) per
terminal. Tested in open air.
Maximum Vac: 277 at 50/60 Hz
Maximum Vdc: 125
Notes:
1		Single-pole test data at 25°C based on NEMA procedures (AB 4-2003) for verifying
		performance of molded case circuit breakers.
Symmetrical RMS amperes (kA)	 DC Amps
FD
HFD
277V			125VBreakerType
Interrupting Rating (UL/CSA Listed)
125A		 See curve
Breaker rating
Continuous amperes	 Instantaneous trip, amperes
35			 10
65			 10
30
Time Current Curves TC01200002E
Effective March 2018
Series C
F-Frame
EATON www.eaton.com
Interrupting
rating
determines
end of curve
Minimum Maximum
100
50
30
20
10
5
3
2
1
.5
.3
.2
.1
.05
.03
.02
.01
.005
.003
.002
.001
TIMEINSECONDS
1,000
500
300
200
5,000
3,000
2,000
1HOUR1MINUTE2HOURS
10000
8000
6000
9000
7000
5000
4000
3000
2000
1000
800
600
900
700
500
400
300
200
100
8060 907050403020109875 6
TIMEINSECONDS10,000
100
50
30
20
10
5
3
2
1
.5
.3
.2
.1
.05
.03
.02
.01
.005
.003
.002
.001
1,000
500
300
200
5,000
3,000
2,000
1HOUR1MINUTE2HOURS
CURRENT IN AMPERES
10000
8000
6000
9000
7000
5000
4000
3000
2000
1000
800
600
900
700
500
400
300
200
100
8060 907050403020109875 6
150A
Maximum single-
pole triptimes
at 25°C 1
CURRENT IN AMPERES
Maximum
interrupting
time
Circuit breaker time/current curves
Series C ®
F-frame circuit breakers
Catalog types FD and HFD circuit breakers, single-pole.
For application and coordination purposes only.
Based on 40˚C ambient, cold start. Connected with four (4) feet of
rated wire (60˚C up to 100A, 75˚C above 125A) per terminal.
Tested in open air.
Maximum Vac: 277 at 50/60 Hz
Maximum Vdc: 125
Breaker rating
Continuous
amperes Instantaneous trip, amperes
150A See curve
Single-pole test data at 25˚C based on NEMA procedures
(AB 4-2003) for verifying performance of molded case
circuit breakers.
Breaker
type
Symmetrical Rms amperes (kA )
35
65
FD
HFD
10
10
277V
DC amps
125V
Interrupting rating (UL/CSA listed)
Figure 27. Single Pole, Series C,Types FD and HFD 150A—Curve Number SC-4438-88A
Circuit breaker time/current curves
Series C F-frame circuit breakers
CatalogTypes: FD and HFD circuit breakers, single-pole.
For application and coordination purposes only. Based on 40°C ambient, cold start.
Connected with four (4) feet of rated wire (60°C up to 100A, 75°C above 125A) per
terminal. Tested in open air.
Maximum Vac: 277 at 50/60 Hz
Maximum Vdc: 125
Notes:
1		Single-pole test data at 25°C based on NEMA procedures (AB 4-2003) for verifying
		performance of molded case circuit breakers.
Symmetrical RMS amperes (kA)	 DC Amps
FD
HFD
277V			125VBreakerType
Interrupting Rating (UL/CSA Listed)
150A		 See curve
Breaker rating
Continuous amperes	 Instantaneous trip, amperes
35			 10
65			 10
31
Time Current Curves TC01200002E
Effective March 2018
Series C
F-Frame
EATON www.eaton.com
0.01
0.10
1.00
10.00
100.00
1000.00
10000.00
10 100 1000 10000 100000 1000000
TimeinSeconds
Current in Amperes
ED, EHD, FDB FD, HFD, FDC 15A 2, 3 & 4 pole
Maximum
Tolerance
Minimum
Tolerance
Circuit Breaker time/current curves
Series C F-Frame Circuit Breakers
Catalog Types: ED, EHD, FDB, FD, HFD, FDC
for two, three and four pole breakers
For application andcoordinationpurposesonly.
Based on cold start at rated ambient temperature.
Connected with four (4) feet of rated wire (60/75°C) per terminal
with all poleswired in series. Tested in openair.
Instantaneoustrippingissingle pole.
Maximum Vac: 600V at 50/60Hz
Maximum Vdc: 250V
Breaker Rating
ContinuousAmps Instantaneoustrip amperes
15A See curve
May be 42% higher for dc voltages
Interruption Ratings (UL/CSA listed)
Breaker Symmetrical RMS amperes(kA)
Type 240 Vac 480Vac 600 Vac 250 Vdc 125 Vdc
ED 65 -- -- -- 10
EHD 18 14 -- 10 --
FDB 18 14 14 10 --
FD 65 35 18 10 --
HFD 100 65 25 22 --
FDC 200 100 35 22 --
Maximum Single Pole Trip
Times at 25 C
interruption rating and
application determines
end of curve
600V480V240V
Figure 28. Types ED, EHD, FDB, FD, FDC, and HFD 15A 2, 3 & 4 pole—Curve NumberTC012036EN
AB DE-ION Circuit Breakers—two-, three-, and four-poles
32
Time Current Curves TC01200002E
Effective March 2018
Series C
F-Frame
EATON www.eaton.com
Eaton Corporation January 2012
0.01
0.10
1.00
10.00
100.00
1000.00
10000.00
10 100 1000 10000 100000 1000000
TimeinSeconds
Current in Amperes
ED, EHD, FDB FD, HFD, FDC 20A 2, 3 & 4 pole
Maximum
Tolerance
Minimum
Tolerance
Circuit Breaker time/current curves
Series C F-Frame Circuit Breakers
Catalog Types: ED, EHD, FDB, FD, HFD, FDC
for two, three and four pole breakers
For application and coordination purposes only.
Based on cold start at rated ambient temperature.
Connected with four (4) feet of rated wire (60/75°C) per terminal with
all poles wired in series. Tested in open air.
Instantaneous tripping is single pole.
Maximum Vac: 600V at 50/60Hz
Maximum Vdc: 250V
Breaker Rating
Continuous Amps Instantaneous trip amperes
20A See curve
May be 42% higher for dc voltages
Interruption Ratings (UL/CSA listed)
Breaker Symmetrical RMS amperes (kA)
Type 240 Vac 480Vac 600 Vac 250 Vdc 125 Vdc
ED 65 -- -- -- 10
EHD 18 14 -- 10 --
FDB 18 14 14 10 --
FD 65 35 18 10 --
HFD 100 65 25 22 --
FDC 200 100 35 22 --
Maximum Single Pole Trip
Times at 25°C
interruption rating and
application determines
end of curve
600V480V240V
Figure 29.Types ED, EHD, FDB, FD, FDC, and HFD 20A 2, 3 & 4 pole—Curve NumberTC012037EN
33
Time Current Curves TC01200002E
Effective March 2018
Series C
F-Frame
EATON www.eaton.com
Eaton Corporation January 2012
0.01
0.10
1.00
10.00
100.00
1000.00
10000.00
10 100 1000 10000 100000 1000000
TimeinSeconds
Current in Amperes
ED, EHD, FDB FD, HFD, FDC 25A 2, 3 & 4 pole
Maximum
Tolerance
Minimum
Tolerance
Circuit Breaker time/current curves
Series C F-Frame Circuit Breakers
Catalog Types: ED, EHD, FDB, FD, HFD, FDC
for two, three and four pole breakers
For application and coordination purposes only.
Based on cold start at rated ambient temperature.
Connected with four (4) feet of rated wire (60/75°C) per terminal with
all poles wired in series. Tested in open air.
Instantaneous tripping is single pole.
Maximum Vac: 600V at 50/60Hz
Maximum Vdc: 250V
Breaker Rating
Continuous Amps Instantaneous trip amperes
25A See curve
May be 42% higher for dc voltages
Interruption Ratings (UL/CSA listed)
Breaker Symmetrical RMS amperes (kA)
Type 240 Vac 480Vac 600 Vac 250 Vdc 125 Vdc
ED 65 -- -- -- 10
EHD 18 14 -- 10 --
FDB 18 14 14 10 --
FD 65 35 18 10 --
HFD 100 65 25 22 --
FDC 200 100 35 22 --
Maximum Single Pole Trip
Times at 25°C
interruption rating and
application determines
end of curve
600V480V240V
Figure 30.Types ED, EHD, FDB, FD, FDC, and HFD 25A 2, 3 & 4 pole—Curve NumberTC012038EN
34
Time Current Curves TC01200002E
Effective March 2018
Series C
F-Frame
EATON www.eaton.com
Eaton Corporation January 2012
0.01
0.10
1.00
10.00
100.00
1000.00
10000.00
10 100 1000 10000 100000 1000000
TimeinSeconds
Current in Amperes
ED, EDH, EHD, FDB FD, HFD, FDC 30A 2, 3 & 4 pole
Maximum
Tolerance
Minimum
Tolerance
Circuit Breaker time/current curves
Series C F-Frame Circuit Breakers
Catalog Types: ED, EHD,FDB, FD, HFD, FDC
for two, three and four pole breakers
For application and coordination purposes only.
Based on cold start at rated ambient temperature.
Connected with four (4) feet of rated wire (60/75°C) per terminal with
all poles wired in series. Tested in open air.
Instantaneous tripping is single pole.
Maximum Vac: 600V at 50/60Hz
Maximum Vdc: 250V
Breaker Rating
Continuous Amps Instantaneous trip amperes
30A See curve
May be 42% higher for dc voltages
Interruption Ratings (UL/CSA listed)
Breaker Symmetrical RMS amperes (kA)
Type 240 Vac 480Vac 600 Vac 250 Vdc 125 Vdc
ED 65 -- -- -- 10
EHD 18 14 -- 10 --
FDB 18 14 14 10 --
FD 65 35 18 10 --
HFD 100 65 25 22 --
FDC 200 100 35 22 --
Maximum Single Pole Trip
Times at 25°C
interruption rating and
application determines
end of curve
600V480V240V
Figure 31.Types ED, EHD, FDB, FD, FDC, and HFD 30A 2, 3 & 4 pole—Curve NumberTC012039EN
35
Time Current Curves TC01200002E
Effective March 2018
Series C
F-Frame
EATON www.eaton.com
Eaton Corporation January 2012
0.01
0.10
1.00
10.00
100.00
1000.00
10000.00
10 100 1000 10000 100000 1000000
TimeinSeconds
Current in Amperes
ED, EHD, FDB FD, HFD, FDC 35A 2, 3 & 4 pole
Maximum
Tolerance
Minimum
Tolerance
Circuit Breaker time/current curves
Series C F-Frame Circuit Breakers
Catalog Types: ED, EHD, FDB, FD, HFD, FDC
for two, three and four pole breakers
For application and coordination purposes only.
Based on cold start at rated ambient temperature.
Connected with four (4) feet of rated wire (60/75°C) per terminal with
all poles wired in series. Tested in open air.
Instantaneous tripping is single pole.
Maximum Vac: 600V at 50/60Hz
Maximum Vdc: 250V
Breaker Rating
Continuous Amps Instantaneous trip amperes
35A See curve
May be 42% higher for dc voltages
Interruption Ratings (UL/CSA listed)
Breaker Symmetrical RMS amperes (kA)
Type 240 Vac 480Vac 600 Vac 250 Vdc 125 Vdc
ED 65 -- -- -- 10
EHD 18 14 -- 10 --
FDB 18 14 14 10 --
FD 65 35 18 10 --
HFD 100 65 25 22 --
FDC 200 100 35 22 --
Maximum Single Pole Trip
Times at 25°C
interruption rating and
application determines
end of curve
600V480V240V
Figure 32.Types ED, EHD, FDB, FD, FDC, and HFD 35A 2, 3 & 4 pole—Curve NumberTC012040EN
36
Time Current Curves TC01200002E
Effective March 2018
Series C
F-Frame
EATON www.eaton.com
Eaton Corporation January 2012
0.01
0.10
1.00
10.00
100.00
1000.00
10000.00
10 100 1000 10000 100000 1000000
TimeinSeconds
Current in Amperes
ED, EHD, FDB FD, HFD, FDC 40A 2, 3 & 4 pole
Maximum
Tolerance
Minimum
Tolerance
Circuit Breaker time/current curves
Series C F-Frame Circuit Breakers
Catalog Types: ED, EHD, FDB, FD, HFD, FDC
for two, three and four pole breakers
For application and coordination purposes only.
Based on cold start at rated ambient temperature.
Connected with four (4) feet of rated wire (60/75°C) per terminal with
all poles wired in series. Tested in open air.
Instantaneous tripping is single pole.
Maximum Vac: 600V at 50/60Hz
Maximum Vdc: 250V
Breaker Rating
Continuous Amps Instantaneous trip amperes
40A See curve
May be 42% higher for dc voltages
Interruption Ratings (UL/CSA listed)
Breaker Symmetrical RMS amperes (kA)
Type 240 Vac 480Vac 600 Vac 250 Vdc 125 Vdc
ED 65 -- -- -- 10
EHD 18 14 -- 10 --
FDB 18 14 14 10 --
FD 65 35 18 10 --
HFD 100 65 25 22 --
FDC 200 100 35 22 --
Maximum Single Pole Trip
Times at 25°C
interruption rating and
application determines
end of curve
600V480V240V
Figure 33.Types ED, EHD, FDB, FD, FDC, and HFD 40A 2, 3 & 4 pole—Curve NumberTC012041EN
37
Time Current Curves TC01200002E
Effective March 2018
Series C
F-Frame
EATON www.eaton.com
Eaton Corporation January 2012
0.01
0.10
1.00
10.00
100.00
1000.00
10000.00
10 100 1000 10000 100000 1000000
TimeinSeconds
Current in Amperes
ED, EHD, FDB FD, HFD, FDC 45A 2, 3 & 4 pole
Maximum
Tolerance
Minimum
Tolerance
Circuit Breaker time/current curves
Series C F-Frame Circuit Breakers
Catalog Types: ED, EHD, FDB, FD, HFD, FDC
for two, three and four pole breakers
For application and coordination purposes only.
Based on cold start at rated ambient temperature.
Connected with four (4) feet of rated wire (60/75°C) per terminal with
all poles wired in series. Tested in open air.
Instantaneous tripping is single pole.
Maximum Vac: 600V at 50/60Hz
Maximum Vdc: 250V
Breaker Rating
Continuous Amps Instantaneous trip amperes
45A See curve
May be 42% higher for dc voltages
Interruption Ratings (UL/CSA listed)
Breaker Symmetrical RMS amperes (kA)
Type 240 Vac 480Vac 600 Vac 250 Vdc 125 Vdc
ED 65 -- -- -- 10
EHD 18 14 -- 10 --
FDB 18 14 14 10 --
FD 65 35 18 10 --
HFD 100 65 25 22 --
FDC 200 100 35 22 --
Maximum Single Pole Trip
Times at 25°C
interruption rating and
application determines
end of curve
600V480V240V
Figure 34.Types ED, EHD, FDB, FD, FDC, and HFD 45A 2, 3 & 4 pole—Curve NumberTC012042EN
38
Time Current Curves TC01200002E
Effective March 2018
Series C
F-Frame
EATON www.eaton.com
Eaton Corporation January 2012
0.01
0.10
1.00
10.00
100.00
1000.00
10000.00
10 100 1000 10000 100000 1000000
TimeinSeconds
Current in Amperes
ED, EHD, FDB FD, HFD, FDC 50A 2, 3 & 4 pole
Maximum
Tolerance
Minimum
Tolerance
Circuit Breaker time/current curves
Series C F-Frame Circuit Breakers
Catalog Types: ED, EHD, FDB, FD, HFD, FDC
for two, three and four pole breakers
For application and coordination purposes only.
Based on cold start at rated ambient temperature.
Connected with four (4) feet of rated wire (60/75°C) per terminal with
all poles wired in series. Tested in open air.
Instantaneous tripping is single pole.
Maximum Vac: 600V at 50/60Hz
Maximum Vdc: 250V
Breaker Rating
Continuous Amps Instantaneous trip amperes
50A See curve
May be 42% higher for dc voltages
Interruption Ratings (UL/CSA listed)
Breaker Symmetrical RMS amperes (kA)
Type 240 Vac 480Vac 600 Vac 250 Vdc 125 Vdc
ED 65 -- -- -- 10
EHD 18 14 -- 10 --
FDB 18 14 14 10 --
FD 65 35 18 10 --
HFD 100 65 25 22 --
FDC 200 100 35 22 --
Maximum Single Pole Trip
Times at 25°C
interruption rating and
application determines
end of curve
600V480V240V
Figure 35.Types ED, EHD, FDB, FD, FDC, and HFD 50A 2, 3 & 4 pole—Curve NumberTC012043EN
39
Time Current Curves TC01200002E
Effective March 2018
Series C
F-Frame
EATON www.eaton.com
Eaton Corporation January 2012
0.01
0.10
1.00
10.00
100.00
1000.00
10000.00
10 100 1000 10000 100000 1000000
TimeinSeconds
Current in Amperes
ED, EHD, FDB FD, HFD, FDC 60A 2, 3 & 4 pole
Maximum
Tolerance
Minimum
Tolerance
Circuit Breaker time/current curves
Series C F-Frame Circuit Breakers
Catalog Types: ED, EHD, FDB, FD, HFD, FDC
for two, three and four pole breakers
For application and coordination purposes only.
Based on cold start at rated ambient temperature.
Connected with four (4) feet of rated wire (60/75°C) per terminal with
all poles wired in series. Tested in open air.
Instantaneous tripping is single pole.
Maximum Vac: 600V at 50/60Hz
Maximum Vdc: 250V
Breaker Rating
Continuous Amps Instantaneous trip amperes
60A See curve
May be 42% higher for dc voltages
Interruption Ratings (UL/CSA listed)
Breaker Symmetrical RMS amperes (kA)
Type 240 Vac 480Vac 600 Vac 250 Vdc 125 Vdc
ED 65 -- -- -- 10
EHD 18 14 -- 10 --
FDB 18 14 14 10 --
FD 65 35 18 10 --
HFD 100 65 25 22 --
FDC 200 100 35 22 --
Maximum Single Pole Trip
Times at 25°C
interruption rating and
application determines
end of curve
600V480V240V
Figure 36.Types ED, EHD, FDB, FD, FDC, and HFD 60A 2, 3 & 4 pole—Curve NumberTC012044EN
40
Time Current Curves TC01200002E
Effective March 2018
Series C
F-Frame
EATON www.eaton.com
Eaton Corporation January 2012
0.01
0.10
1.00
10.00
100.00
1000.00
10000.00
10 100 1000 10000 100000 1000000
TimeinSeconds
Current in Amperes
ED, EHD, FDB FD, HFD, FDC 70A 2, 3 & 4 pole
Maximum
Tolerance
Minimum
Tolerance
Circuit Breaker time/current curves
Series C F-Frame Circuit Breakers
Catalog Types: ED, EHD, FDB, FD, HFD, FDC
for two, three and four pole breakers
For application and coordination purposes only.
Based on cold start at rated ambient temperature.
Connected with four (4) feet of rated wire (60/75°C) per terminal with
all poles wired in series. Tested in open air.
Instantaneous tripping is single pole.
Maximum Vac: 600V at 50/60Hz
Maximum Vdc: 250V
Breaker Rating
Continuous Amps Instantaneous trip amperes
70A See curve
May be 42% higher for dc voltages
Interruption Ratings (UL/CSA listed)
Breaker Symmetrical RMS amperes (kA)
Type 240 Vac 480Vac 600 Vac 250 Vdc 125 Vdc
ED 65 -- -- -- 10
EHD 18 14 -- 10 --
FDB 18 14 14 10 --
FD 65 35 18 10 --
HFD 100 65 25 22 --
FDC 200 100 35 22 --
Maximum Single Pole Trip
Times at 25°C
interruption rating and
application determines
end of curve
600V480V240V
Figure 37.Types ED, EHD, FDB, FD, FDC, and HFD 70A 2, 3 & 4 pole—Curve Number TC012045EN
41
Time Current Curves TC01200002E
Effective March 2018
Series C
F-Frame
EATON www.eaton.com
Eaton Corporation January 2012
0.01
0.10
1.00
10.00
100.00
1000.00
10000.00
10 100 1000 10000 100000 1000000
TimeinSeconds
Current in Amperes
ED, EHD, FDB FD, HFD, FDC 80A 2, 3 & 4 pole
Maximum
Tolerance
Minimum
Tolerance
Circuit Breaker time/current curves
Series C F-Frame Circuit Breakers
Catalog Types: ED, EHD, FDB, FD, HFD, FDC
for two, three and four pole breakers
For application and coordination purposes only.
Based on cold start at rated ambient temperature.
Connected with four (4) feet of rated wire (60/75°C) per terminal with
all poles wired in series. Tested in open air.
Instantaneous tripping is single pole.
Maximum Vac: 600V at 50/60Hz
Maximum Vdc: 250V
Breaker Rating
Continuous Amps Instantaneous trip amperes
80A See curve
May be 42% higher for dc voltages
Interruption Ratings (UL/CSA listed)
Breaker Symmetrical RMS amperes (kA)
Type 240 Vac 480Vac 600 Vac 250 Vdc 125 Vdc
ED 65 -- -- -- 10
EHD 18 14 -- 10 --
FDB 18 14 14 10 --
FD 65 35 18 10 --
HFD 100 65 25 22 --
FDC 200 100 35 22 --
Maximum Single Pole Trip
Times at 25°C
interruption rating and
application determines
end of curve
600V480V240V
Figure 38.Types ED, EHD, FDB, FD, FDC, and HFD 80A 2, 3 & 4 pole—Curve Number TC012046EN
42
Time Current Curves TC01200002E
Effective March 2018
Series C
F-Frame
EATON www.eaton.com
Eaton Corporation January 2012
0.01
0.10
1.00
10.00
100.00
1000.00
10000.00
10 100 1000 10000 100000 1000000
TimeinSeconds
Current in Amperes
ED, EHD, FDB FD, HFD, FDC 90A 2, 3 & 4 pole
Maximum
Tolerance
Minimum
Tolerance
Circuit Breaker time/current curves
Series C F-Frame Circuit Breakers
Catalog Types: ED, EHD, FDB, FD, HFD, FDC
for two, three and four pole breakers
For application and coordination purposes only.
Based on cold start at rated ambient temperature.
Connected with four (4) feet of rated wire (60/75°C) per terminal with
all poles wired in series. Tested in open air.
Instantaneous tripping is single pole.
Maximum Vac: 600V at 50/60Hz
Maximum Vdc: 250V
Breaker Rating
Continuous Amps Instantaneous trip amperes
90A See curve
May be 42% higher for dc voltages
Interruption Ratings (UL/CSA listed)
Breaker Symmetrical RMS amperes (kA)
Type 240 Vac 480Vac 600 Vac 250 Vdc 125 Vdc
ED 65 -- -- -- 10
EHD 18 14 -- 10 --
FDB 18 14 14 10 --
FD 65 35 18 10 --
HFD 100 65 25 22 --
FDC 200 100 35 22 --
Maximum Single Pole Trip
Times at 25°C
interruption rating and
application determines
end of curve
600V480V240V
Figure 39.Types ED, EHD, FDB, FD, FDC, and HFD 90A 2, 3 & 4 pole—Curve NumberTC012047EN
43
Time Current Curves TC01200002E
Effective March 2018
Series C
F-Frame
EATON www.eaton.com
0.01
0.10
1.00
10.00
100.00
1000.00
10000.00
10 100 1000 10000 100000 1000000
TimeinSeconds
Current in Amperes
ED, EDB, EDS, EDH, EDC, EHD, FDB FD, HFD, FDC 100A 2, 3 & 4 pole
Maximum
Tolerance
Minimum
Tolerance
Circuit Breaker time/current curves
Series C F-Frame Circuit Breakers
EDH, EDC, EHD,Catalog Types: ED, EDB, EDS,
FDB, FD, HFD, FDC
for two, three and four pole breakers
For application and coordination purposes only.
Based on cold start at rated ambient temperature.
Connected with four (4) feet of rated wire (60/75°C) per terminal
with all poles wired in series. Tested in open air.
Instantaneous tripping is single pole.
Maximum Vac: 600V at 50/60Hz
Maximum Vdc: 250V
Breaker Rating
Continuous Amps Instantaneous trip amperes
100A see curve
May be 42% higher for dc voltages
Interruption Ratings (UL/CSA listed)
Breaker Symmetrical RMS amperes (kA)
Type 240 Vac 480Vac 600 Vac 250 Vdc 125 Vdc
ED 65 -- -- -- 10
EDB 22 -- -- -- 10
EDS 42 -- -- -- 10
EDH 100 -- -- -- 10
EDC 200 -- -- -- 10
EHD 18 14 -- 10 --
FDB 18 14 14 10 --
FD 65 35 18 10 --
HFD 100 65 25 22 --
Maximum Single Pole Trip
Times at 25°C
interruption rating and
application determines
end of curve
600V480V240V
FCD 200 100 35 22 --
Figure 40.Types ED, EDB, EDS, EDH, EDC, EHD, FDB, FD, HFD, FDC 100A 2, 3 & 4 pole—Curve NumberTC012029EN
44
Time Current Curves TC01200002E
Effective March 2018
Series C
F-Frame
EATON www.eaton.com
Figure 41.Types ED, EDB, EDS, EDH, EDC, EHD, FDB, FD, HFD, FDC 110A 2, 3, & 4 pole—Curve NumberTC012030EN
45
Time Current Curves TC01200002E
Effective March 2018
Series C
F-Frame
EATON www.eaton.com
Figure 42.Types ED, EDB, EDS, EDH, EDC, EHD, FDB, FD, HFD, FDC 125A 2, 3, & 4 pole—Curve NumberTC012031EN
46
Time Current Curves TC01200002E
Effective March 2018
Series C
F-Frame
EATON www.eaton.com
0.010
0.100
1.000
10.000
100.000
1000.000
10000.000
10 100 1000 10000 100000 1000000
TimeinSeconds
Current in Amperes
ED, EDB, EDS, EDH, EDC, EHD, FDB, FD, HFD FDC 150A 2, 3 & 4 pole
Maximum
Tolerance
Minimum
Tolerance
Maximum Single Pole Trip
Times at 25°C
interruption rating and
application determines
end of curve
Circuit Breaker time/current curves
Series C F-Frame Circuit Breakers
Catalog Types: ED, EDB, EDS, EDH, EDC, EHD,
FDB, FD, HFD, FDC
for two, three and four pole breakers
For application and coordination purposes only.
Based on cold start at rated ambient temperature.
Connected with four (4) feet of rated wire (60/75°C) per terminal
with all poles wired inseries. Tested in open air.
Instantaneous tripping is single pole.
Maximum Vac: 600V at 50/60Hz
Maximum Vdc: 250V
Breaker Rating
Continuous Amps Instantaneous trip amperes
150A see curve
May be 42% higher for dc voltages
Interruption Ratings (UL/CSA listed)
Breaker Symmetrical RMS amperes (kA)
Type 240 Vac 480Vac 600 Vac 250 Vdc 125 Vdc
ED 65 -- -- -- 10
EDB 22 -- -- -- 10
EDS 42 -- -- -- 10
EDH 100 -- -- -- 10
EDC 200 -- -- -- 10
EHD 18 14 -- 10 --
FDB 18 14 14 10 --
FD 65 35 18 10 --
HFD 100 65 25 22 --
FDC 200 100 35 22 --
600V480V240V
Figure 43.Types ED, EDB, EDS, EDH, EDC, EHD, FDB, FD, HFD, FDC 150A 2, 3, & 4 pole—Curve NumberTC012032EN
47
Time Current Curves TC01200002E
Effective March 2018
Series C
F-Frame
EATON www.eaton.com
Eaton Corporation January 2012
0.010
0.100
1.000
10.000
100.000
1000.000
10000.000
10 100 1000 10000 100000 1000000
TimeinSeconds
Current in Amperes
ED, EDB, EDS, EDH, EDC, EHD, FDB FD, HFD, FDC 175A 2, 3 & 4 pole
Maximum
Tolerance
Minimum
Tolerance
Circuit Breaker time/current curves
Series C F-Frame Circuit Breakers
EDH, EDC, EHD,Catalog Types: ED, EDB, EDS,
FDB, FD, HFD,FDC
for two, three and four pole breakers
For application and coordination purposes only.
Based on cold start at rated ambient temperature.
Connected with four (4) feet of rated wire (60/75°C) per terminal
with all poles wired in series. Tested in open air.
Instantaneous tripping is single pole.
Maximum Vac: 600V at 50/60Hz
Maximum Vdc: 250V
Breaker Rating
Continuous Amps Instantaneous trip amperes
175A See curve
May be 42% higher for dc voltages
Interruption Ratings (UL/CSA listed)
Breaker Symmetrical RMS amperes (kA)
Type 240 Vac 480Vac 600 Vac 250 Vdc 125 Vdc
ED 65 -- -- -- 10
EDB 22 -- -- -- 10
EDS 42 -- -- -- 10
EDH 100 -- -- -- 10
EDC 200 -- -- -- 10
EHD 18 14 -- 10 --
FDB 18 14 14 10 --
FD 65 35 18 10 --
HFD 100 65 25 22 --
FDC 200 100 35 22 --
Maximum Single Pole Trip
Times at 25°C
interruption rating and
application determines
end of curve
600V480V240V
Figure 44.Types ED, EDB, EDS, EDH, EDC, EHD, FDB, FD, HFD, FDC 175A 2, 3 & 4 pole—Curve NumberTC012033EN
48
Time Current Curves TC01200002E
Effective March 2018
Series C
F-Frame
EATON www.eaton.com
Eaton Corporation January 2012
0.010
0.100
1.000
10.000
100.000
1000.000
10000.000
10 100 1000 10000 100000 1000000
TimeinSeconds
Current in Amperes
ED, EDB, EDS, EDH, EDC, EHD, FDB FD, HFD, FDC 200A 2, 3 & 4 pole
Maximum
Tolerance
Minimum
Tolerance
Circuit Breaker time/current curves
Series C F-Frame Circuit Breakers
EDH, EDC, EHD,Catalog Types: ED, EDB, EDS,
FDB, FD, HFD,FDC
for two, three and four pole breakers
For application and coordination purposes only.
Based on cold start at rated ambient temperature.
Connected with four (4) feet of rated wire (60/75°C) per terminal
with all poles wired in series. Tested in open air.
Instantaneous tripping is single pole.
Maximum Vac: 600V at 50/60Hz
Maximum Vdc: 250V
Breaker Rating
Continuous Amps Instantaneous trip amperes
200A See curve
May be 42% higher for dc voltages
Interruption Ratings (UL/CSA listed)
Breaker Symmetrical RMS amperes (kA)
Type 240 Vac 480Vac 600 Vac 250 Vdc 125 Vdc
ED 65 -- -- -- 10
EDB 22 -- -- -- 10
EDS 42 -- -- -- 10
EDH 100 -- -- -- 10
EDC 200 -- -- -- 10
EHD 18 14 -- 10 --
FDB 18 14 14 10 --
FD 65 35 18 10 --
HFD 100 65 25 22 --
FDC 200 100 35 22 --
Maximum Single Pole Trip
Times at 25°C
interruption rating and
application determines
end of curve
600V480V240V
Figure 45.Types ED, EDB, EDS, EDH, EDC, EHD, FDB, FD, HFD, FDC 200A 2, 3, & 4 pole—Curve NumberTC012034EN
49
Time Current Curves TC01200002E
Effective March 2018
Series C
F-Frame
EATON www.eaton.com
0.010
0.100
1.000
10.000
100.000
1000.000
10000.000
10 100 1000 10000 100000 1000000
TimeinSeconds
Current in Amperes
ED, EDB, EDS, EDH, EDC, EHD, FDB FD, HFD, FDC 225A 2, 3 & 4 pole
Maximum
Tolerance
Minimum
Tolerance
Circuit Breaker time/current curves
Series C F-Frame Circuit Breakers
EDH, EDC, EHD,Catalog Types: ED, EDB, EDS,
FDB, FD, HFD, FDC
for two, three and four pole breakers
For application and coordination purposes only.
Based on cold start at rated ambient temperature.
Connected with four (4) feet of rated wire (60/75°C) per terminal
with all poles wired in series. Tested in open air.
Instantaneous tripping is single pole.
Maximum Vac: 600V at 50/60Hz
Maximum Vdc: 250V
Breaker Rating
Continuous Amps Instantaneous trip amperes
225A See curve
May be 42% higher for dc voltages
Interruption Ratings (UL/CSA listed)
Breaker Symmetrical RMS amperes (kA)
Type 240 Vac 480Vac 600 Vac 250 Vdc 125 Vdc
ED 65 -- -- -- 10
EDB 22 -- -- -- 10
EDS 42 -- -- -- 10
EDH 100 -- -- -- 10
EDC 200 -- -- -- 10
EHD 18 14 -- 10 --
FDB 18 14 14 10 --
FD 65 35 18 10 --
HFD 100 65 25 22 --
FDC 200 100 35 22 --
Maximum Single Pole Trip
Times at 25°C
interruption rating and
application determines
end of curve
600V480V240V
Figure 46.Types ED, EDB, EDS, EDH, EDC, EHD, FDB, FD, HFD, FDC 225A 2, 3, & 4 pole—Curve NumberTC012035EN
Figure 48. Series CTypes FDC, JDC, KDC and LDC ­—240 V (Curve No. AD-29-166A)
Figure 47. Series CTypes FDC, JDC, KDC and LDC ­—240 V (Curve No. AD-29-166A)
AvailableShortCircuitCurrent,kArms
Peak Let-Through Current, kA
LDC3600
KDC3400
JDC3250
FDC3225
AvailableShortCircuitCurrent,kArms
Peak Let-Through I2
t, A2
sec
LDC3600
KDC3400
JDC3250
FDC3225
50kA
5kA
10kA
100kA
100 kA
500 kA
1000 kA
5 kA
50 kA
10 kA
1000 kA
500 kA
100 kA
50 kA
10 kA
5 kA
10,000,000
5,000,000
1,000,000
500,000
100,000
10,0001kA
avail.Ipfor1st
symm.1/2cycle
1 kA
1 kA
AvailableShortCircuitCurrent,kArms
Peak Let-Through Current, kA
LDC3600
KDC3400
JDC3250
FDC3225
AvailableShortCircuitCurrent,kArms
Peak Let-Through I2
t, A2
sec
LDC3600
KDC3400
JDC3250
FDC3225
50kA
5kA
10kA
100kA
100 kA
500 kA
1000 kA
5 kA
50 kA
10 kA
1000 kA
500 kA
100 kA
50 kA
10 kA
5 kA
10,000,000
5,000,000
1,000,000
500,000
100,000
10,0001kA
avail.Ipfor1st
symm.1/2cycle
1 kA
1 kA
50 EATON www.eaton.com
Time Current Curves TC01200002E
Effective May 2017
Series C
F-Frame
Figure 50. Series CTypes FDC, JDC, KDC and LDC ­—480 V (Curve No. AD-29-166B)
Figure49. Series CTypes FDC, JDC, KDC and LDC ­—480 V (Curve No. AD-29-166B)
AvailableShortCircuitCurrent,kArms
Peak Let-Through Current, kA
LDC3600
KDC3400
JDC3250
FDC3225
AvailableShortCircuitCurrent,kArms
Peak Let-Through I2
t, A2
sec
LDC3600
KDC3400
JDC3250
FDC3225
1000 kA
500 kA
100 kA
50 kA
10 kA
5 kA
1 kA
1000 kA
500 kA
100 kA
50 kA
10 kA
5 kA
1 kA
avail.Ipfor1st
symm.1/2cycle
50kA
5kA
10kA
100kA
1kA
10,000,000
5,000,000
1,000,000
500,000
100,000
AvailableShortCircuitCurrent,kArms
Peak Let-Through Current, kA
LDC3600
KDC3400
JDC3250
FDC3225
AvailableShortCircuitCurrent,kArms
Peak Let-Through I2
t, A2
sec
LDC3600
KDC3400
JDC3250
FDC3225
1000 kA
500 kA
100 kA
50 kA
10 kA
5 kA
1 kA
1000 kA
500 kA
100 kA
50 kA
10 kA
5 kA
1 kA
avail.Ipfor1st
symm.1/2cycle
50kA
5kA
10kA
100kA
1kA
10,000,000
5,000,000
1,000,000
500,000
100,000
51EATON www.eaton.com
Time Current Curves TC01200002E
Effective March 2018
Series C
F-Frame
Figure 52 Series CTypes FDC, JDC, KDC and LDC ­—600 V (Curve No. AD-29-166C)
Figure 51. Series CTypes FDC, JDC, KDC and LDC ­—600 V (Curve No. AD-29-166C)
AvailableShortCircuitCurrent,kArms
Peak Let-Through Current, kA
LDC3600
KDC3400
JDC3250
FDC3150
AvailableShortCircuitCurrent,kArms
Peak Let-Through I2
t, A2
sec
LDC3600
KDC3400
JDC3250
FDC3150
100 kA
50 kA
10 kA
5 kA
1 kA
avail.Ipfor1st
symm.1/2cycle 100 kA
50 kA
10 kA
5 kA
1 kA
50kA
5kA
10kA
100kA
1kA
10,000,000
5,000,000
1,000,000
500,000
100,000
AvailableShortCircuitCurrent,kArms
Peak Let-Through Current, kA
LDC3600
KDC3400
JDC3250
FDC3150
AvailableShortCircuitCurrent,kArms
Peak Let-Through I2
t, A2
sec
LDC3600
KDC3400
JDC3250
FDC3150
100 kA
50 kA
10 kA
5 kA
1 kA
avail.Ipfor1st
symm.1/2cycle
100 kA
50 kA
10 kA
5 kA
1 kA
50kA
5kA
10kA
100kA
1kA
10,000,000
5,000,000
1,000,000
500,000
100,000
52 EATON www.eaton.com
Time Current Curves TC01200002E
Effective May 2017
Series C
F-Frame
Notes:
53EATON www.eaton.com
Time Current Curves TC01200002E
Effective May 2017
Series C
F-Frame
Eaton
1000 Eaton Boulevard
Cleveland, OH 44122
United States
Eaton.com
© 2018 Eaton
All Rights Reserved
Printed in USA
Publication No. TC01200002E / TBG001366
March 2018
Eaton is a registered trademark.
All other trademarks are property
of their respective owners.
Series C F-frame circuit breaker
time current curves

Time Current Curves TC01200002E
Effective March 2018

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F frame tc01200002 e tbg 4-9-18 fd

  • 1. Time Current Curves TC01200002E Effective March 2018 Supersedes May 2017 Contents Description Page Catalog Number Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Digitrip 310+ Electronic Trip Unit Types FDE, HFDE, FDCE Long Delay (LD) and Short Delay (SD) with Flat Response and Override (225A) (LSI, LSIG) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TC01203015E . . . . . . . . 6 Long Delay Response and Short Delay with I2 t Response Curve and Override (225A) (LS, LSG) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TC01203016E . . . . . . . . 7 Ground Fault Response Curve (LSG, LSIG) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TC01203017E . . . . . . . 8 Digitrip 210+ ElectronicTrip Unit Types FDE, HFDE, FDCE Long Delay (LD) and Short Delay (SD) with Flat Response and Override (100A, 225A) (LSI) (Profiles J, K, R, S) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TC012001EN . . . . . . . . 9 (100A, 225A) (LSI) (Profiles M, N) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TC012002EN . . . . . . . 10 (100A, 225A) (LSI) (Profiles P, Q) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TC012003EN . . . . . . . 11 Long Delay (LD) and Short Delay (SD) with I2 t Response Curve and Override (100A, 225A) (LSI) (Profiles L, O) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TC012004EN . . . . . . . 12 Long Delay (LD), Instantaneous, and Override (100A, 150A) (LI) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TC012005EN . . . . . . . 13 (225A) (LI) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TC012006EN . . . . . . . 14 Single-pole thermal-magnetic trip units Series C types EHD, FD, and HFD 15A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SC-4423-88A . . . . . . . 15 Series C types EHD, FD, and HFD 20A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SC-4424-88A . . . . . . . 16 Series C types EHD, FD, and HFD 25A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SC-4425-88A . . . . . . . 17 Series C types EHD, FD, and HFD 30A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SC-4426-88A . . . . . . . 18 Series C types EHD, FD, and HFD 35A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SC-4427-88A . . . . . . . 19 Series C types EHD, FD, and HFD 40A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SC-4428-88A . . . . . . . 20 Series C types EHD, FD, and HFD 45A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SC-4429-88A . . . . . . . 21 Series C types EHD, FD, and HFD 50A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SC-4430-88A . . . . . . . 22 Series C types EHD, FD, and HFD 60A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SC-4431-88A . . . . . . . 23 Series C types EHD, FD, and HFD 70A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SC-4432-88A . . . . . . . 24 Series C types EHD, FD, and HFD 80A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SC-4433-88A . . . . . . . 25 Series C types EHD, FD, and HFD 90A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SC-4434-88A . . . . . . . 26 Series C types EHD, FD, and HFD 100A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SC-4435-88A . . . . . . . 27 Series C types FD and HFD 110A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SC-4436-88A . . . . . . . 28 Series C types FD and HFD 125A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SC-4437-88A . . . . . . . 29 Series C types FD and HFD 150A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SC-4438-88A . . . . . . . 30 Series C F-frame circuit breaker time current curves
  • 2. Contents (continued) Two-, three-, and four-pole thermal-magnetic trip units Page Series C types ED, EHD, FDB, FD, FDC, and HFD 15A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TC012036 . . . . . . . 31 Series C types ED, EHD, FDB, FD, FDC, and HFD 20A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TC012037 . . . . . . . 32 Series C types ED, EHD, FDB, FD, FDC, and HFD 25A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TC012038 . . . . . . . 33 Series C types ED, EHD, FDB, FD, FDC, and HFD 30A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TC012039 . . . . . . . 34 Series C types ED, EHD, FDB, FD, FDC, and HFD 35A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TC012040 . . . . . . . 35 Series C types ED, EHD, FDB, FD, FDC, and HFD 40A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TC012041 . . . . . . . 36 Series C types ED, EHD, FDB, FD, FDC, and HFD 45A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TC012042 . . . . . . . 37 Series C types ED, EHD, FDB, FD, FDC, and HFD 50A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TC012043 . . . . . . . 38 Series C types ED, EHD, FDB, FD, FDC, and HFD 60A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TC012044 . . . . . . . 39 Series C types ED, EHD, FDB, FD, FDC, and HFD 70A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TC012045 . . . . . . . 40 Series C types ED, EHD, FDB, FD, FDC, and HFD 80A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TC012046 . . . . . . . 41 Series C types ED, EHD, FDB, FD, FDC, and HFD 90A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TC012047 . . . . . . . 42 Series C types ED, EDB, EDS, EDH, EDC, EHD, FDB, FD, HFD, FDC 100A 2, 3 & 4 pole . TC012029EN . . . . . . 43 Series C types ED, EDB, EDS, EDH, EDC, EHD, FDB, FD, HFD, FDC 110A 2, 3, & 4 pole . TC012030EN . . . . . . 44 Series C types ED, EDB, EDS, EDH, EDC, EHD, FDB, FD, HFD, FDC 125A 2, 3, & 4 pole . TC012031EN . . . . . . 45 Series C types ED, EDB, EDS, EDH, EDC, EHD, FDB, FD, HFD, FDC 150A 2, 3, & 4 pole . TC012032EN . . . . . . 46 Series C types ED, EDB, EDS, EDH, EDC, EHD, FDB, FD, HFD, FDC 175A 2, 3, & 4 pole . TC012033EN . . . . . . 47 Series C types ED, EDB, EDS, EDH, EDC, EHD, FDB, FD, HFD, FDC 200A 2, 3, & 4 pole . TC012034EN . . . . . . 48 Series C types ED, EDB, EDS, EDH, EDC, EHD, FDB, FD, HFD, FDC 225A 2, 3, & 4 pole . TC012035EN . . . . . . 49 Series C types FDC, JDC, KDC and LDC ­— 240 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . AD-29-166A . . . . . . 50 Series C types FDC, JDC, KDC and LDC ­— 480 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . AD-29-166B . . . . . . 51 Series C types FDC, JDC, KDC and LDC ­— 600V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . AD-29-166C . . . . . . 52 Note: Time/current characteristic curves for Series C® F-frame circuit breakers—voltages shown in curve headings are maximum at which the breaker may be applied. Interrupting capacity of individual breaker is tabulated on each curve. Time Current Curves are engineering reference documents for application and coordination purposes only. For field testing molded case circuit breakers, refer to NEMA AB 4 guidelines. 2 EATON www.eaton.com
  • 3. 3EATON www.eaton.com Time Current Curves TC01200002E Effective March 2018 Series C F-Frame Revision notes Note:N Unless noted below, all curves remain unchanged from their prior revision. Revision Curve number Page Date Changed FDCE, 600V interruption rating from 35 to 25 TC01203015 6 05-24-17 Deleted curves: SC-4146-87B, SC-4147-87B, SC-4148-87B, SC-4149-87B, SC-6970-98, SC-5805-94A, SC-5528-93A, SC-5529-93A, SC-5530-93A, SC-5531-93A, SC-6871-98. See revision note. 43-48, 61-65 (old page #’s) 05-24-17 Added 7 new curves, combining FDC data with all other frame data. New curve #’s are: TC012029EN, TC012030EN, TC012031EN, TC012032EN, TC012033EN, TC012034EN, TC012035EN. See revision note. 43-49 (new page #’s) 05-24-17 Added 3 new curves, demonstrating let-through current at 240V, 480V and 600V. AD-29-166A AD-29-166B AD-29-166C 62-64 (new page #’s) 05-24-17 Corrected maximum single pole trip time curves 110A, 125A. TC012030EN TC012031EN 44-45 04-01-18 Deleted curves: SC-5516-93A, SC-5517-93A, SC-5518-93A, SC-5519-93A, SC-5520-93A, SC-5521-93A, SC-5522-93A, SC-5523-93A, SC-5524-93A, SC-5525-93A, SC-5526-93A, SC-5527-93A. 04-01-18 Added 12 new curves, combining FDC data with all other frame data. New curve #’s are: TC012036EN , TC012037EN, TC012038EN, TC012039EN, TC012040EN, TC012041EN, TC012042EN, TC012043EN, TC012044EN, TC012045EN, TC012046EN, TC012047EN. See revision note. 31-42 04-01-18
  • 4. 4 Time Current Curves TC01200002E Effective March 2018 Series C F-Frame EATON www.eaton.com Trip Amperes 010 015 020 025 030 035 040 045 050 060 070 080 090 100 110 125 150 175 (FD, HFD, FDC, two-, three-, four-pole only) 200 (FD, HFD, FDC, two-, three-, four-pole only) 225 (FD, HFD, FDC, two-, three-, four-pole only) CircuitBreaker Type EHD FDB FD HFD FDC Number of Poles 1 = 1 pole 2 = 2 poles 3 = 3 poles 4 = 4 poles Suffix E = 100% protected (four-pole only) neutral pole EH = 50% protected (four-pole only) K = High magnetic molded case switch L = Line and load terminals S = Stainless steel terminals V = 50 °C calibration W = Without terminals Y = Line terminals only Z = Aluminum terminals (≤100 amperes) Circuit Breaker Type EDB EDS ED EDH EDC Number of Poles 2 = 2 poles 3 = 3 poles Trip Amperes 100 125 150 175 200 225 Suffix L = Line and load terminals W = Without terminals Y = Line terminals only Z = Aluminum terminals (100 amperes) FDC 3 100 L EDC 3 200 L Blank = Load side terminals only Blank = Load side terminals only Table3. F-Frame Circuit Breakers withThermal-MagneticTrip UnitTechnology Performance @ 480 Vac FDE HFDE Number of Poles 3 = 3 poles Suffix W L = Without Terminals = Line and Load Terminals Blank = Load Side Terminals Only Trip Unit 21 = LI 22 = LSI Amperes 100 150 225 HFDE 3 21 L100 = 35 kAIC = 65 kAIC Table 2. F-Frame Circuit Breakers with 210+ ElectronicTrip UnitTechnology Circuit Breaker Type FDE HFDE FDCE Number of Poles 3 = 3 poles Suffix ZG = Zone selective interlocking Blank = No option Trip Unit 33 = LS 32 = LSI 35 = LSG 36 = LSIG Suffix W = Without terminals L = Line and load terminals Blank = Load side terminals only Trip Amperes 80 160 225 FDE 3 225 32 W = 35 kAIC = 65 kAIC = 100 kAIC Table 1. F-Frame Circuit Breakers with 310+ ElectronicTrip UnitTechnology Catalog Number Selection This information is presented only as an aid to understanding catalog numbers. It is not to be used to build catalog numbers for circuit breakers or trip units.
  • 5. 5 Time Current Curves TC01200002E Effective March 2018 Series C F-Frame EATON www.eaton.com Figure 2. Digitrip 210+ Nameplates Figure 1. Digitrip 310+ Nameplates LI LSI LS LSG LSIGLSI
  • 6. 6 Time Current Curves TC01200002E Effective March 2018 Series C F-Frame EATON www.eaton.com .01 1 2 3 4 5 6 7 8 9 10 20 30 40 50 60 70 80 90 100 1000 900 800 700 600 500 400 300 200 2000 3000 4000 5000 6000 7000 8000 9000 10000 .02 .03 .04 .05 .06 .07 .08 .09 .1 .2 .3 .4 .5 .6 .7 .8 .9 1 3 4 5 6 7 8 9 10 20 30 40 50 60 70 80 90 100 1000 900 800 700 600 500 400 300 200 2000 3000 4000 5000 6000 7000 8000 9000 10000 .01 .02 .03 .04 .05 .06 .07 .08 .09 .1 .2 .3 .4 .5 .6 .7 .8 .9 1 Available long delay time: 2,4,7,10,12,15,20,24 Shown @ 6x 2,4,7,15,24 seconds +0 / –30% Ir Available short delay pick up settings 2–8,10, x 5%12 Ir (See Note 7) FDE Circuit breaker time/current curves (phase current) :IAvailable sensors( )n 80A 160A 225A 1 2 3 4 5 7 10 20 30 40 50 70 100 2 3 4 5 7 10 20 30 40 50 70 100.5 .7 1 2 3 4 5 7 10 20 30.5 .7 Types FDE, FDCE, HFDE circuit breakers 12 . .24 1.15 Notes: Application determines end of curve Instantaneous override(see Note 8) . . 300 ms (P,Q,R) 120 ms (M,N,O) Inst. (J,K,L) 15 7 .4 2 12 Ii 1. Curve accuracy applies from –20C to +55C ambient. Temperatures above +85C cause an over- temperature protection trip. For possible continuous ampere dertaing for ambient above 40C, refer to Eaton. 2. Application frequency is 50/60 Hz. 3. There is a memory effect that can act to shorten the long delay. The memory effect comes into play if a current above the long delay pick up value exists for a time and then is cleared by the tripping of a down stream device or the circuit breaker itself. A subsequent overload will cause the circuit breaker to tripin shorter time than normal. The amount of time delay reduction is inverse to the amount of time that has elapsed since the previous overload. Approximately five minutes is required between overloads tocompletely reset memory. 4. The right portion of the curve is determined by the interrupting rating of the circuit breaker. The left portion of the curve is shown as a multiple of the long delay setting. (long delay pick up = 115% of I ). Range is 110%–120%. 6. Total clearing times shown include the response times of the trip unit, the breaker opening, and the interruption of the current. 7. The short delay pick up has nine settings/positions, 2–8, 10, 12. 8. For high fault current levels an additional fixed instantaneous hardware override is provided (corresponding to SDPU position 9) at 12x (I ) and designated as 12I . Instantaneous tolerance is +/–20%. 9. For LD response and SD with flat response (this curve): TC01203015E 10. For LD response and SD with I T response curve, see: TC01203016E 11. For ground fault delay response curve, see: TC01203017E 12. Digitrip RMS 310+ trip units are suitable for functional field testing with test kit Cat. No. MTST120V. For field testing using primary injection methods, follow NEMA publication AB 4-2003. 2 n n Maximum total clearing time Minimum total clearing time I 80A 160A 225AI A B C D E F G H 15A 20A 30A 40A 50A 60A 70A 80A 60A 70A 80A 90A 100A 125A 150A 160A 100A 110A 125A 150A 160A 175A 200A 225A i Breaker type Symmetrical RMS amperes (kA) UL/CSA FDE HFDE FDCE 240V Interrupting ratings—50/60 Hz 65 100 200 480V 35 65 100 600V 18 25 35 r n TIMEINSECONDS TIMEINSECONDS 1MINUTE1HOUR2HOURS Current in Multiples of (lr) Current in Multiples of (lr) Current in Multiples of (lr) 2 8 10 4 6 3 7 5 sec. 0.001 0.01 0.1 1 1000 10000 100000 Current in Amps Interrupting Rating Determines End of Curve Fixed Instantaneous Override 600V 480V 240V Figure 3.Types FDE, HFDE, and FDCE 225A—Long/Short Delay—Curve NumberTC01203015E Digitrip 310+ Circuit BreakerTime/Current Curves (Phase Current) Series C F-Frame Circuit Breakers CatalogTypes: FDE, HFDE, FDCE Trip UnitTypes: 32 (LSI), 36 (LSIG) Available Sensors (In ): 80A, 160A, 225A Long Delay (LD) and Short Delay (SD) with Flat Response (Ir) / (In) 80A 160A 225A A B C D E F G H 15A 60A 100A 20A 70A 110A 30A 80A 125A 40A 90A 150A 50A 100A 160A 60A 125A 175A 70A 150A 200A 80A 160A 225A Symmetrical RMS amperes (kAS) UL/CSA FDE 65 35 18 HFDE 100 65 25 FDCE 200 100 25 240V 480V 600VBreakerType Interrupting Rating—50/60 Hz Notes: 1. Curve accuracy applies from –20C to +55C ambient. Temperatures above +85C cause an overtemperature protection trip. For possible continuous ampere derating for ambient above 40C, refer to Eaton. 2. Application frequency is 50/60 Hz. 3. There is a memory effect that can act to shorten the long delay. The memory effect comes into play if a current above the long delay pick up value exists for a time and then is cleared by the tripping of a down stream device or the circuit breaker itself. A subsequent overload will cause the circuit breaker to trip in shorter time than normal. The amount of time delay reduction is inverse to the amount of time that has elapsed since the previous overload. Approximately five minutes is required between overloads to completely reset memory. 4. The right portion of the curve is determined by the interrupting rating of the circuit breaker. 5. The left portion of the curve is shown as a multiple of the long delay setting. (long delay pick up = 115% of In ). Range is 110%–120%. 6. Total clearing times shown include the response times of the trip unit, the breaker opening, and the interruption of the current. 7. The short delay pick up has nine settings/positions, 2–8, 10, 12. 8. For high fault current levels an additional fixed instantaneous hardware override is provided (corresponding to SDPU position 9) at 12x (In ) and designated as 12Ii. Instantaneous tolerance is +/–20%. 9. For LD response and SD with flat response (this curve): TC01203015E. 10. For LD response and SD with I2 T response curve, see: TC01203016E. 11. For ground fault delay response curve, see: TC01203017E. 12. Digitrip RMS 310+ trip units are suitable for functional field testing with test kit Cat. No. MTS120V. For field testing using primary injection methods, follow NEMA publication AB-4-2003.
  • 7. 7 Time Current Curves TC01200002E Effective March 2018 Series C F-Frame EATON www.eaton.com .01 1 2 3 4 5 6 7 8 9 10 20 30 40 50 60 70 80 90 100 1000 900 800 700 600 500 400 300 200 2000 3000 4000 5000 6000 7000 8000 9000 10000 .02 .03 .04 .05 .06 .07 .08 .09 .1 .2 .3 .4 .5 .6 .7 .8 .9 1 3 4 5 6 7 8 9 10 20 30 40 50 60 70 80 90 100 1000 900 800 700 600 500 400 300 200 2000 3000 4000 5000 6000 7000 8000 9000 10000 .01 .02 .03 .04 .05 .06 .07 .08 .09 .1 .2 .3 .4 .5 .6 .7 .8 .9 1 Maximum total clearing time Available long delay time: 2,4,7,10,12,15,20,24 sec. Shown @ 6 x 2,4,7,15,24 seconds +0 / –30% Ir 2 Application determines end of curve Available short delay pick up settings 2–8,10, x 5%12 Ir (see Note 7) Instantaneous override(see Note 10) FDE Circuit breaker time/current curves (phase current) Long delay (LD) and short delay (SD) with I T response 2 Available sensors( ):In 80A 160A 225A 1 2 3 4 5 7 10 20 30 40 50 70 100 2 3 4 5 7 10 20 30 40 50 70 100.5 .7 1 2 3 4 5 7 10 20 30.5 .7 Types FDE, FDCE, HFDE circuit breakers Notes: 1. Curve accuracy applies from –20C to +55C ambient. Temperatures above +85C cause an over- temperature protection trip. For possible continuous ampere derating for ambient above 40C, refer to Eaton. 2. Application frequency is 50/60 Hz. 4. The right portion of the curve is determined by the interrupting rating of the circuit breaker. 5. The left portion of the curve is shown as a multiple of the long delay setting (Long delay pick up = 115% of ). Range is110%–120%. 7. The short delay pick up has nine settings/positions: 2–8, 10, 12. 9. Breakpoint back to FLAT response occurs @ 8x for upper line of the I T curve. (corresponding to SDPU position nine) at 12x and designated as 12 . Instantaneous tolerance is+/–20%. 12. For LD response and SD with I Tresponse (this curve): 13. For ground fault delay response curve, see: TC01203017E I I ( I ) I r r n 2 2 TC01203016E 12 I T 2 short delay (see Note 8) Minimum total clearing time . .4 . . .24 . 1.15 See Note 9 12 Ii 67ms 15 7 I 80A 160A 225A A 15A 60A 100A B 20A 70A 10A C 30A 80A 125A D 40A 90A 150A E 50A 100A 160A F 60A 125A 175A G 70A 150A 200A H 80A 160A 225A I 6. Total clearing times shown include the response times of the trip unit, the breaker opening, and the interruption of the current. 2 8. Short delay I T band has a tolerance of +/–15%. Breaker type Symmetrical RMS amperes (kA) UL/CSA FDE HFDE FDCE 240V Interrupting ratings—50/60 Hz 65 100 200 480V 35 65 100 600V 18 25 35 if a current above the long delay pick up value exists for a time and then is cleared by the tripping of a down stream device or the circuit breaker itself. A subsequent overload will cause the circuit breaker to trip in shorter time than normal. The amount of time delay reduction is inverse to the amount of time that completely reset memory. i r n Current in Multiples of (lr ) Current in Multiples of (lr ) Current in Multiples of (lr ) TIMEINSECONDS TIMEINSECONDS 1MINUTE1HOUR2HOURS 2 8 10 7 5 4 6 3 0.001 0.01 0.1 1 1000 10000 100000 Current in Amps Interrupting Rating Determines End of Curve Fixed Instantaneous Override 600V 480V 240V Figure 4.Types FDE, HFDE, and FDCE 225A—Long Short Delay and I2 T—Curve NumberTC01203016E Digitrip 310+ Circuit BreakerTime/Current Curves (Phase Current) Series C F-Frame Circuit Breakers CatalogTypes: FDE, HFDE, FDCE Trip UnitTypes: 32 (LS), 5 (LSG) Available Sensors (In): 80A, 160A, 225A Long Delay Response (Ir) and Short Delay with I2T Response Curve Notes: 1. Curve accuracy applies from –20C to +55C ambient. Temperatures above +85C cause an overtemperature protection trip. For possible continuous ampere derating for ambient above 40C, refer to Eaton. 2. Application frequency is 50/60 Hz. 3. There is a memory effect that can act to shorten the long delay. The memory effect comes into play if a current above the long delay pick up value exists for a time and then is cleared by the tripping of a down stream device or the circuit breaker itself. A subsequent overload will cause the circuit breaker to trip in shorter time than normal. The amount of time delay reduction is inverse to the amount of time that has elapsed since the previous overload. Approximately five minutes is required between overloads to completely reset memory. 4. The right portion of the curve is determined by the interrupting rating of the circuit breaker. 5. The left portion of the curve is shown as a multiple of the long delay setting. (long delay pick up = 115% of Ir ). Range is 110%–120%. 6. Total clearing times shown include the response times of the trip unit, the breaker opening, and the interruption of the current. 7. The short delay pick up has nine settings/positions, 2–8, 10, 12. 8. Short delay I2T band has a tolerance of +/–15%. 9. Breakpoint back to FLAT response occurs @ 8x Ir for upper line of the I2T curve. 10. For high fault current levels an additional fixed instantaneous hardware override is provided (corresponding to SDPU position nine) at 12x (In) and designated as Ii. Instantaneous tolerance is +/–20%. 11. For LD response and SD with flat response curve, see: TC01203015E. 12. For LD response and SD with I2T response (this curve): TC01203016E. 13. For ground fault delay response curve, see: TC01203017E. 14. Digitrip RMS 310+ trip units are suitable for functional field testing with test kit Cat. No MTST120V. For field testing using primary injection methods, follow NEMA publication AB 4-2003. UL/CSA rms Sym. kA, 50/60 Hz FDE 65 35 18 HFDE 100 65 25 FDCE 200 100 25 240V 480V 600VBreakerType Interrupting Rating (Ir) / (In) 80A 160A 225A A B C D E F G H 15A 60A 100A 20A 70A 110A 30A 80A 125A 40A 90A 150A 50A 100A 160A 60A 125A 175A 70A 150A 200A 80A 160A 225A
  • 8. 8 Time Current Curves TC01200002E Effective March 2018 Series C F-Frame EATON www.eaton.com .01 2 3 4 5 6 8 10 20 30 40 50 60 70 80 90 100 1000 900 800 700 600 500 400 300 200 .02 .03 .04 .05 .06 .07 .08 .09 .1 .2 .3 .4 .5 .6 .7 .8 .9 1 7 9 2000 3000 4000 5000 6000 7000 8000 9000 10000 ETUNIM1SDNOCESNIEMIT .1 .2 .3 .4 .5 .7 1.0 2.0 .1 .2 .3 .4 .5 .7 1.0 2.0 10%) .4X 120ms (K,N,Q) 300ms (L,O,R) Inst. (J,M,P) .3X .2X 1X.6X .8X InGround current in multiple of ( ) Ground fault pickup settings (tolerance Figure 5.Types FDE, HFDE, and FDCE 225A—LSIG—Curve NumberTC01203017E Digitrip 310+ Circuit breaker time/current curves (ground current) Series C F-Frame Circuit Breakers CatalogTypes: FDE, HFDE, FDCE, industrail circuit breakers Ground fault delay response Notes: 1. Curve accuracy applies from –20C to +55C ambient. Temperatures above +85C cause an overtemperature protection trip. For possible continuous ampere derating for ambient above 40C, refer to Eaton. 2. Application frequency is 50/60 Hz. 3. Trip units are suitable for functional field testing with test kit style # 70C1056G52. 4. For LD response and SD with flat response curve, see: TC01203015E. 5. For LD response and SD with I2 T response curve, see: TC01203016E. 4. For ground fault delay response (this curve): TC01203017E. LSG LSIG (Ir) / (In) 80A 160A 225A A B C D E F G H 15A 60A 100A 20A 70A 110A 30A 80A 125A 40A 90A 150A 50A 100A 160A 60A 125A 175A 70A 150A 200A 80A 160A 225A Switch Setting tSD tGF J K L M N O P Q R Inst. Inst. Inst. 120 Inst. 300 120 Inst. 120 120 120 300 300 Inst. 300 120 300 300
  • 9. 9 Time Current Curves TC01200002E Effective March 2018 Series C F-Frame EATON www.eaton.com 0.01 0.1 1 10 100 1000 10000 1 10 100 TimeinSeconds Current in Multiples of Ir 300 ms 150 ms Minimum Commit Time Maximumtotal clearingtime 2x 10x Long Delay Pickup @ 115% Ir ± 5% Long Delay @ 6×Ir +0%/-30% 0.001 0.01 0.1 1 1000 10000 100000 Current in Amps Interrupting Rating Determines End of Curve Fixed Instantaneous Override 600V 480V 240V Figure 6. Digitrip 210+Trip Units (100 & 225A), Long Delay and Short Delay with Flat Response and Override (LSI, Profiles K, J, S, R) Curve NumberTD012001EN, June 2015 Digitrip 210+ Circuit BreakerTime/Current Curves (Phase Current) Series C F-frame circuit breakers (100A and 225A) CatalogTypes: FDE, HFDE Profiles: J, K, R, S Trip UnitTypes: 22 (LSI) UL/CSA rms Sym. kA, 50/60 Hz FDE HFDE 240Vac 480Vac 600Vac 250VdcBreakerType Interrupting Rating 65 35 18 — 100 65 25 — A 40A 100A B 50A 110A C 60A 125A D 70A 150A E 80A 175A F 90A 200A G 100A 225A Rated Amperes Ir 100A 225A J 2 150 K 2 300 L 2 I2 t M 4 Inst N 4 150 O 4 I2 t P 6 Inst Q 6 300 R 10 150 S 10 300 SD Profile Isd (X lr ) tsd (ms) Notes: 1 Curve accuracy applies from -20C to +55C. Temperatures above +105C cause an overtemperature protection trip. 2 There is a memory effect that can act to shorten the long delay. Approximately five minutes is required between overloads to completely reset this thermal memory. 3 Total clearing times shown include the response times of the trip unit, the breaker opening, and the interruption of the current. 4 Short delay pickups settings in multiples of Ir ± 10%. Short delay time accuracy +0ms/-30ms 5 For high fault current levels an additional fixed instantaneous hardware override is provided at 2500A ±10%.
  • 10. 10 Time Current Curves TC01200002E Effective March 2018 Series C F-Frame EATON www.eaton.com 0.01 0.1 1 10 100 1000 10000 1 10 100 TimeinSeconds Current in Multiples of Ir 150 ms 50 ms Minimum Commit Time Maximumtotal clearingtime Fixed Instantaneous Override 0.001 0.01 0.1 1 1000 10000 100000 Current in Amps Interrupting Rating Determines End of Curve Fixed Instantaneous Override 600V 480V 240V 4x Long Delay Pickup @ 115% Ir ± 5% Long Delay @ 6×Ir +0%/-30% Figure 7. Digitrip 210+Trip Units (100 & 225A), Long Delay and Short Delay with Flat Response and Override (LSI, Profiles N, M) Curve NumberTD012002EN, June 2015 Digitrip 210+ Circuit BreakerTime/Current Curves (Phase Current) Series C F-frame circuit breakers (100A and 225A) CatalogTypes: FDE, HFDE Profiles: M, N Trip UnitTypes: 22 (LSI) UL/CSA rms Sym. kA, 50/60 Hz FDE HFDE 240Vac 480Vac 600Vac 250VdcBreakerType Interrupting Rating 65 35 18 — 100 65 25 — A 40A 100A B 50A 110A C 60A 125A D 70A 150A E 80A 175A F 90A 200A G 100A 225A Rated Amperes Ir 100A 225A J 2 150 K 2 300 L 2 I2 t M 4 Inst N 4 150 O 4 I2 t P 6 Inst Q 6 300 R 10 150 S 10 300 SD Profile Isd (X lr ) tsd (ms) Notes: 1 Curve accuracy applies from -20C to +55C. Temperatures above +105C cause an overtemperature protection trip. 2 There is a memory effect that can act to shorten the long delay. Approximately five minutes is required between overloads to completely reset this thermal memory. 3 Total clearing times shown include the response times of the trip unit, the breaker opening, and the interruption of the current. 4 Short delay pickups settings in multiples of Ir ± 10%. Short delay time accuracy +0ms/-30ms 5 For high fault current levels an additional fixed instantaneous hardware override is provided at 2500A ±10%.
  • 11. 11 Time Current Curves TC01200002E Effective March 2018 Series C F-Frame EATON www.eaton.com 0.01 0.1 1 10 100 1000 10000 1 10 100 TimeinSeconds Current in Multiples of Ir 300 ms 50 ms Minimum Commit Time Maximum total clearing time 0.001 0.01 0.1 1 1000 10000 100000 Current in Amps Interrupting Rating Determines End of Curve Fixed Instantaneous Override 600V 480V 240V 6x Long Delay Pickup @ 115% Ir ± 5% Long Delay @ 6×Ir +0%/-30% Figure 8. Digitrip 210+Trip Units (100 & 225A), Long Delay and Short Delay with Flat Response and Override (LSI, Profiles Q, P) Curve NumberTD012003EN, June 2015 Digitrip 210+ Circuit BreakerTime/Current Curves (Phase Current) Series C F-frame circuit breakers (100A and 225A) CatalogTypes: FDE, HFDE Profiles: P, Q Trip UnitTypes: 22 (LSI) UL/CSA rms Sym. kA, 50/60 Hz FDE HFDE 240Vac 480Vac 600Vac 250VdcBreakerType Interrupting Rating 65 35 18 — 100 65 25 — A 40A 100A B 50A 110A C 60A 125A D 70A 150A E 80A 175A F 90A 200A G 100A 225A Rated Amperes Ir 100A 225A J 2 150 K 2 300 L 2 I2 t M 4 Inst N 4 150 O 4 I2 t P 6 Inst Q 6 300 R 10 150 S 10 300 SD Profile Isd (X lr ) tsd (ms) Notes: 1 Curve accuracy applies from -20C to +55C. Temperatures above +105C cause an overtemperature protection trip. 2 There is a memory effect that can act to shorten the long delay. Approximately five minutes is required between overloads to completely reset this thermal memory. 3 Total clearing times shown include the response times of the trip unit, the breaker opening, and the interruption of the current. 4 Short delay pickups settings in multiples of Ir ± 10%. Short delay time accuracy +0ms/-30ms 5 For high fault current levels an additional fixed instantaneous hardware override is provided at 2500A ±10%.
  • 12. 12 Time Current Curves TC01200002E Effective March 2018 Series C F-Frame EATON www.eaton.com 0.01 0.1 1 10 100 1000 10000 1 10 100 TimeinSeconds Current in Multiples of Ir Minimum Commit Time Maximum total clearing time I2T ShortDelay 0.001 0.01 0.1 1 1000 10000 100000 Current in Amps Interrupting Rating Determines End of Curve Fixed Instantaneous Override 600V 480V 240V 4x 2x Long Delay Pickup @ 115% Ir ± 5% Long Delay @ 6×Ir +0%/-30% Figure 9. Digitrip 210+Trip Units (100 & 225A), Long Delay and Short Delay with I2t Response and Override (LSI, Profiles L, O) Curve NumberTD012004EN, June 2015 Digitrip 210+ Circuit BreakerTime/Current Curves (Phase Current) Series C F-frame circuit breakers (100A and 225A) CatalogTypes: FDE, HFDE Profiles: L, O Trip UnitTypes: 22 (LSI) UL/CSA rms Sym. kA, 50/60 Hz FDE HFDE 240Vac 480Vac 600Vac 250VdcBreakerType Interrupting Rating 65 35 18 — 100 65 25 — A 40A 100A B 50A 110A C 60A 125A D 70A 150A E 80A 175A F 90A 200A G 100A 225A Rated Amperes Ir 100A 225A J 2 150 K 2 300 L 2 I2 t M 4 Inst N 4 150 O 4 I2 t P 6 Inst Q 6 300 R 10 150 S 10 300 SD Profile Isd (X lr ) tsd (ms) Notes: 1 Curve accuracy applies from -20C to +55C. Temperatures above +105C cause an overtemperature protection trip. 2 There is a memory effect that can act to shorten the long delay. Approximately five minutes is required between overloads to completely reset this thermal memory. 3 Total clearing times shown include the response times of the trip unit, the breaker opening, and the interruption of the current. 4 Short delay pickups settings in multiples of Ir ± 10%. Short delay time accuracy +0ms/-30ms 5 For high fault current levels an additional fixed instantaneous hardware override is provided at 2500A ±10%.
  • 13. 13 Time Current Curves TC01200002E Effective March 2018 Series C F-Frame EATON www.eaton.com 0.01 0.1 1 10 100 1000 10000 1 10 100 TimeinSeconds Current in Multiples of In 2× 3× 3.5x 2.5x 4× 5× 6× 8× 10× 12× 0.001 0.01 0.1 1 1000 10000 100000 Current in Amps Interrupting Rating Determines End of Curve Fixed Instantaneous Override Long Delay Pickup @ 115% Ir ± 5% Long Delay @ 6×Ir +0%/-30% Instantaneous Pickup ± 10% 600V 480V 240V Figure 10. Digitrip 210+Trip Units (100 & 150A), Long Delay, Instantaneous Pickups and Override (LI) Curve NumberTD012005EN, June 2015 Digitrip 210+ Circuit BreakerTime/Current Curves (Phase Current) Series C F-frame circuit breakers (100A and 225A) CatalogTypes: FDE, HFDE Trip UnitTypes: 21 (LI) UL/CSA rms Sym. kA, 50/60 Hz FDE HFDE 240Vac 480Vac 600Vac 250VdcBreakerType Interrupting Rating 65 35 18 — 100 65 25 — J 2 200A K 2.5 250A L 3 300A M 3.5 350A N 4 400A O 5 500A P 6 600A Q 8 800A R 10 1000A S 12 1200A Override 2500A J 2 300A K 2.5 375A L 3 450A M 3.5 525A N 4 600A O 5 750A P 6 900A Q 8 1200A R 10 1500A S 12 1800A Override 2500A 100A Setting li(xln) Level 150A Setting li(xln) Level Notes: 1 Curve accuracy applies from -20C to +55C. Temperatures above +105C cause an overtemperature protection trip. 2 There is a thermal memory effect that can act to shorten the long delay. The amount of time delay reduction is inversely proportional to the amount of time that has elapsed since the previous overload. Approximately five minutes is required between overloads to completely reset this thermal memory effect. 3 Total clearing times shown include the response times of the trip unit, the breaker opening, and the interruption of the current. 4 For high fault current levels an additional fixed instantaneous hardware override is provided at 2400A ±20% (corresponding to 11xlr 225A frame, 16xlr for 150A frame, and 24xlr for 100A frame). A 40A 70A B 50A 80A C 60A 90A D 70A 100A E 80A 110A F 90A 125A G 100A 150A Rated Amperes Ir 100A 150A
  • 14. 14 Time Current Curves TC01200002E Effective March 2018 Series C F-Frame EATON www.eaton.com 0.01 0.1 1 10 100 1000 10000 1 10 100 TimeinSeconds Current in Multiples of In 2× 2.5× 3.5× 3× 4× 5× 6× 8× 10× Long Delay Pickup @ 115% Ir ± 5% Long Delay @ 6×Ir +0%/-30% 0.001 0.01 0.1 1 1000 10000 100000 Current in Amps Interrupting Rating Determines End of Curve Fixed Instantaneous Override 600V 480V 240V Instantaneous Pickup ±10% Figure 11. Digitrip 210+Trip Units (225A), Long Delay, Instantaneous Pickups and Override (LI) Curve NumberTD012006EN, June 2015 Digitrip 210+ Circuit BreakerTime/Current Curves (Phase Current) Series C F-frame circuit breakers (225A) CatalogTypes: FDE, HFDE Trip UnitTypes: 21 (LSI) UL/CSA rms Sym. kA, 50/60 Hz FDE HFDE 240Vac 480Vac 600Vac 250VdcBreakerType Interrupting Rating 65 35 18 — 100 65 25 — A 40A 100A B 50A 110A C 60A 125A D 70A 150A E 80A 175A F 90A 200A G 100A 225A Rated Amperes Ir 100A 225A J 2 450A K 2.5 565A L 3 675A M 3.5 790A N 4 900A O 5 1125A P 6 1350A Q 8 1800A R 10 2250A S Override 2500A Override 2500A Setting li(xln) Level Notes: 1 Curve accuracy applies from -20C to +55C. Temperatures above +105C cause an overtemperature protection trip. 2 There is a thermal memory effect that can act to shorten the long delay. The amount of time delay reduction is inversely proportional to the amount of time that has elapsed since the previous overload. Approximately five minutes is required between overloads to completely reset this thermal memory effect. 3 Total clearing times shown include the response times of the trip unit, the breaker opening, and the interruption of the current. 4 For high fault current levels an additional fixed instantaneous hardware override is provided at 2400A ±20% (corresponding to 11xlr 225A frame, 16xlr for 150A frame, and 24xlr for 100A frame).
  • 15. 15 Time Current Curves TC01200002E Effective March 2018 Series C F-Frame EATON www.eaton.com Minimum Maximum Interrupting rating determines end of curve 100 50 30 20 10 5 3 2 1 .5 .3 .2 .1 .05 .03 .02 .01 .005 .003 .002 .001 TIMEINSECONDS 1,000 500 300 200 5,000 3,000 2,000 1HOUR1MINUTE2HOURS 10000 8000 6000 9000 7000 5000 4000 3000 2000 1000 800 600 900 700 500 400 300 200 100 8060 907050403020109875 6 TIMEINSECONDS 10,000 100 50 30 20 10 5 3 2 1 .5 .3 .2 .1 .05 .03 .02 .01 .005 .003 .002 .001 1,000 500 300 200 5,000 3,000 2,000 1HOUR1MINUTE2HOURS CURRENT IN AMPERES 10000 8000 6000 9000 7000 5000 4000 3000 2000 1000 800 600 900 700 500 400 300 200 100 8060 907050403020109875 6 15A Maximum single- pole trip times at 25°C 1 CURRENT IN AMPERES Maximum interrupting time Figure 12. Single Pole, Series C,Types EHD, FD, and HFD 15A—Curve Number SC-4423-88A Circuit breaker time/current curves Series C F-frame circuit breakers CatalogTypes: EHD, FD and HFD circuit breakers, single-pole. For application and coordination purposes only. Based on 40°C ambient, cold start. Connected with four (4) feet of rated wire (60°C up to 100A, 75°C above 125A) per terminal. Tested in open air. Maximum Vac: 277 at 50/60 Hz Maximum Vdc: 125 Notes: 1 Single-pole test data at 25°C based on NEMA procedures (AB 4-2003) for verifying performance of molded case circuit breakers. Symmetrical RMS amperes (kA) DC Amps EHD FD HFD 277V 125VBreakerType Interrupting Rating (UL/CSA Listed) 15A See curve Breaker rating Continuous amperes Instantaneous trip, amperes 14 10 35 10 65 10
  • 16. 16 Time Current Curves TC01200002E Effective March 2018 Series C F-Frame EATON www.eaton.com Minimum Maximum Interrupting rating determines end of curve Maximum interrupting time 100 50 30 20 10 5 3 2 1 .5 .3 .2 .1 .05 .03 .02 .01 .005 .003 .002 .001 TIMEINSECONDS 1,000 500 300 200 5,000 3,000 2,000 1HOUR1MINUTE2HOURS 10000 8000 6000 9000 7000 5000 4000 3000 2000 1000 800 600 900 700 500 400 300 200 100 8060 907050403020109875 6 TIMEINSECONDS10,000 100 50 30 20 10 5 3 2 1 .5 .3 .2 .1 .05 .03 .02 .01 .005 .003 .002 .001 1,000 500 300 200 5,000 3,000 2,000 1HOUR1MINUTE2HOURS CURRENT IN AMPERES 10000 8000 6000 9000 7000 5000 4000 3000 2000 1000 800 600 900 700 500 400 300 200 100 8060 907050403020109875 6 20A Maximum single- pole trip times at 25°C 1 CURRENT IN AMPERES Figure 13. Single Pole, Series C,Types EHD, FD, and HFD 20A—Curve Number SC-4424-88A Circuit breaker time/current curves Series C F-frame circuit breakers CatalogTypes: EHD, FD and HFD circuit breakers, single-pole. For application and coordination purposes only. Based on 40°C ambient, cold start. Connected with four (4) feet of rated wire (60°C up to 100A, 75°C above 125A) per terminal. Tested in open air. Maximum Vac: 277 at 50/60 Hz Maximum Vdc: 125 Notes: 1 Single-pole test data at 25°C based on NEMA procedures (AB 4-2003) for verifying performance of molded case circuit breakers. Symmetrical RMS amperes (kA) DC Amps EHD FD HFD 277V 125VBreakerType Interrupting Rating (UL/CSA Listed) 20A See curve Breaker rating Continuous amperes Instantaneous trip, amperes 14 10 35 10 65 10
  • 17. 17 Time Current Curves TC01200002E Effective March 2018 Series C F-Frame EATON www.eaton.com Interrupting rating determines end of curve Minimum Maximum 100 50 30 20 10 5 3 2 1 .5 .3 .2 .1 .05 .03 .02 .01 .005 .003 .002 .001 TIMEINSECONDS 1,000 500 300 200 5,000 3,000 2,000 1HOUR1MINUTE2HOURS 10000 8000 6000 9000 7000 5000 4000 3000 2000 1000 800 600 900 700 500 400 300 200 100 8060 907050403020109875 6 TIMEINSECONDS 10,000 100 50 30 20 10 5 3 2 1 .5 .3 .2 .1 .05 .03 .02 .01 .005 .003 .002 .001 1,000 500 300 200 5,000 3,000 2,000 1HOUR1MINUTE2HOURS CURRENT IN AMPERES 10000 8000 6000 9000 7000 5000 4000 3000 2000 1000 800 600 900 700 500 400 300 200 100 8060 907050403020109875 6 25A Maximum single- pole t rip ti mes at 25°C 1 CURRENT IN AMPERES Maximum interrupting time Figure 14. Single Pole, Series C,Types EHD, FD, and HFD 25A—Curve No. SC-4425-88A Circuit breaker time/current curves Series C F-frame circuit breakers CatalogTypes: EHD, FD and HFD circuit breakers, single-pole. For application and coordination purposes only. Based on 40°C ambient, cold start. Connected with four (4) feet of rated wire (60°C up to 100A, 75°C above 125A) per terminal. Tested in open air. Maximum Vac: 277 at 50/60 Hz Maximum Vdc: 125 Notes: 1 Single-pole test data at 25°C based on NEMA procedures (AB 4-2003) for verifying performance of molded case circuit breakers. Symmetrical RMS amperes (kA) DC Amps EHD FD HFD 277V 125VBreakerType Interrupting Rating (UL/CSA Listed) 25A See curve Breaker rating Continuous amperes Instantaneous trip, amperes 14 10 35 10 65 10
  • 18. 18 Time Current Curves TC01200002E Effective March 2018 Series C F-Frame EATON www.eaton.com Interrupting rating determines end of curve Minimum Maximum 100 50 30 20 10 5 3 2 1 .5 .3 .2 .1 .05 .03 .02 .01 .005 .003 .002 .001 TIMEINSECONDS 1,000 500 300 200 5,000 3,000 2,000 1HOUR1MINUTE2HOURS 10000 8000 6000 9000 7000 5000 4000 3000 2000 1000 800 600 900 700 500 400 300 200 100 8060 907050403020109875 6 TIMEINSECONDS10,000 100 50 30 20 10 5 3 2 1 .5 .3 .2 .1 .05 .03 .02 .01 .005 .003 .002 .001 1,000 500 300 200 5,000 3,000 2,000 1HOUR1MINUTE2HOURS CURRENT IN AMPERES 10000 8000 6000 9000 7000 5000 4000 3000 2000 1000 800 600 900 700 500 400 300 200 100 8060 907050403020109875 6 30A Maximum single- pole trip times at 25°C 1 CURRENT IN AMPERES Maximum interrupting time Figure 15. Single Pole, Series C,Types EHD, FD, and HFD 30A—Curve Number SC-4426-88A Circuit breaker time/current curves Series C F-frame circuit breakers CatalogTypes: EHD, FD and HFD circuit breakers, single-pole. For application and coordination purposes only. Based on 40°C ambient, cold start. Connected with four (4) feet of rated wire (60°C up to 100A, 75°C above 125A) per terminal. Tested in open air. Maximum Vac: 277 at 50/60 Hz Maximum Vdc: 125 Notes: 1 Single-pole test data at 25°C based on NEMA procedures (AB 4-2003) for verifying performance of molded case circuit breakers. Symmetrical RMS amperes (kA) DC Amps EHD FD HFD 277V 125VBreakerType Interrupting Rating (UL/CSA Listed) 30A See curve Breaker rating Continuous amperes Instantaneous trip, amperes 14 10 35 10 65 10
  • 19. 19 Time Current Curves TC01200002E Effective March 2018 Series C F-Frame EATON www.eaton.com Interrupting rating determines end of curve Maximum interrupting time Minimum Maximum 100 50 30 20 10 5 3 2 1 .5 .3 .2 .1 .05 .03 .02 .01 .005 .003 .002 .001 TIMEINSECONDS 1,000 500 300 200 5,000 3,000 2,000 1HOUR1MINUTE2HOURS 10000 8000 6000 9000 7000 5000 4000 3000 2000 1000 800 600 900 700 500 400 300 200 100 8060 907050403020109875 6 TIMEINSECONDS 10,000 100 50 30 20 10 5 3 2 1 .5 .3 .2 .1 .05 .03 .02 .01 .005 .003 .002 .001 1,000 500 300 200 5,000 3,000 2,000 1HOUR1MINUTE2HOURS CURRENT IN AMPERES 10000 8000 6000 9000 7000 5000 4000 3000 2000 1000 800 600 900 700 500 400 300 200 100 8060 907050403020109875 6 35A Maximum single- pole trip times at 25°C 1 CURRENT IN AMPERES Catalog types EHD, FD and HFD circuit breakers, single-pole. For application and coordination purposes only. Based on 40˚C ambient, cold start. Connected with four (4) feet of rated wire (60˚C up to 100A, 75˚C above 125A) per terminal. Tested in open air. Maximum Vac : 277 at 50/60 Hz Maximum Vdc: 125 Breaker rating Continuous amperes Instantaneous trip, amperes 35A See curve Breaker type Symmetrical Rms amperes (kA ) 14 35 65 EHD FD HFD 10 10 10 Single-pole test data at 25˚C based on NEMA procedures (AB 4-2003 circuit 277V DC amps 125V Interrupting rating (UL/CSA listed) Figure 16. Single Pole, Series C,Types EHD, FD, and HFD 35A—Curve Number SC-4427-88A Circuit breaker time/current curves Series C F-frame circuit breakers CatalogTypes: EHD, FD and HFD circuit breakers, single-pole. For application and coordination purposes only. Based on 40°C ambient, cold start. Connected with four (4) feet of rated wire (60°C up to 100A, 75°C above 125A) per terminal. Tested in open air. Maximum Vac: 277 at 50/60 Hz Maximum Vdc: 125 Notes: 1 Single-pole test data at 25°C based on NEMA procedures (AB 4-2003) for verifying performance of molded case circuit breakers. Symmetrical RMS amperes (kA) DC Amps EHD FD HFD 277V 125VBreakerType Interrupting Rating (UL/CSA Listed) 35A See curve Breaker rating Continuous amperes Instantaneous trip, amperes 14 10 35 10 65 10
  • 20. 20 Time Current Curves TC01200002E Effective March 2018 Series C F-Frame EATON www.eaton.com Interrupting rating determines end of curve Minimum Maximum 100 50 30 20 10 5 3 2 1 .5 .3 .2 .1 .05 .03 .02 .01 .005 .003 .002 .001 TIMEINSECONDS 1,000 500 300 200 5,000 3,000 2,000 1HOUR1MINUTE2HOURS 10000 8000 6000 9000 7000 5000 4000 3000 2000 1000 800 600 900 700 500 400 300 200 100 8060 907050403020109875 6 TIMEINSECONDS 10,000 100 50 30 20 10 5 3 2 1 .5 .3 .2 .1 .05 .03 .02 .01 .005 .003 .002 .001 1,000 500 300 200 5,000 3,000 2,000 1HOUR1MINUTE2HOURS CURRENT IN AMPERES 10000 8000 6000 9000 7000 5000 4000 3000 2000 1000 800 600 900 700 500 400 300 200 100 8060 907050403020109875 6 40A Maximum single- pole trip times at 25°C 1 CURRENT IN AMPERES Maximum interrupting time Circuit breaker time/current curves Series C ® F-frame circuit breakers Catalog types EHD, FD and HFD circuit breakers, single-pole. For application and coordination purposes only. Based on 40˚C ambient, cold start. Connected with four (4) feet of rated wire (60˚C up to 100A, 75˚C above 125A) per terminal. Tested in open air. Maximum Vac: 277 at 50/60 Hz Maximum Vdc: 125 Breaker rating Continuous amperes Instantaneous trip, amperes 40A See curve Breaker type Symmetrical Rms amperes (kA ) 14 35 65 EHD FD HFD 10 10 10 Single-pole test data at 25˚C based on NEMA procedures (AB 4-2003) for verifying performance of molded case circuit breakers. 277V DC amps 125V Interrupting rating (UL/CSA listed) Figure 17. Single Pole, Series C,Types EHD, FD, and HFD 40A—Curve Number SC-4428-88A Circuit breaker time/current curves Series C F-frame circuit breakers CatalogTypes: EHD, FD and HFD circuit breakers, single-pole. For application and coordination purposes only. Based on 40°C ambient, cold start. Connected with four (4) feet of rated wire (60°C up to 100A, 75°C above 125A) per terminal. Tested in open air. Maximum Vac: 277 at 50/60 Hz Maximum Vdc: 125 Notes: 1 Single-pole test data at 25°C based on NEMA procedures (AB 4-2003) for verifying performance of molded case circuit breakers. Symmetrical RMS amperes (kA) DC Amps EHD FD HFD 277V 125VBreakerType Interrupting Rating (UL/CSA Listed) 40A See curve Breaker rating Continuous amperes Instantaneous trip, amperes 14 10 35 10 65 10
  • 21. 21 Time Current Curves TC01200002E Effective March 2018 Series C F-Frame EATON www.eaton.com Interrupting rating determines end of curve Minimum Maximum 100 50 30 20 10 5 3 2 1 .5 .3 .2 .1 .05 .03 .02 .01 .005 .003 .002 .001 TIMEINSECONDS 1,000 500 300 200 5,000 3,000 2,000 1HOUR1MINUTE2HOURS 10000 8000 6000 9000 7000 5000 4000 3000 2000 1000 800 600 900 700 500 400 300 200 100 8060 907050403020109875 6 TIMEINSECONDS 10,000 100 50 30 20 10 5 3 2 1 .5 .3 .2 .1 .05 .03 .02 .01 .005 .003 .002 .001 1,000 500 300 200 5,000 3,000 2,000 1HOUR1MINUTE2HOURS CURRENT IN AMPERES 10000 8000 6000 9000 7000 5000 4000 3000 2000 1000 800 600 900 700 500 400 300 200 100 8060 907050403020109875 6 45A Maximum single- pole trip times at 25°C 1 CURRENT IN AMPERES Maximum interrupting time Circuit breaker time/current curves Series C ® F-frame circuit breakers Catalog types EHD, FD and HFD circuit breakers, single-pole. For application and coordination purposes only. Based on 40˚C ambient, cold start. Connected with four (4) feet of rated wire (60˚C up to 100A, 75˚C above 125A) per terminal. Tested in open air. Maximum Vac : 277 at 50/60 Hz Maximum Vdc : 125 Breaker rating Continuous amperes Instantaneous trip, amperes 45A See curve Breaker type Symmetrical Rms amperes (kA ) 14 35 65 EHD FD HFD 10 10 10 Single-pole test data at 25˚C based on NEMA procedures (AB 4-2003) for verifying performance of molded case circuit breakers. 277V DC amps 125V Interrupting rating (UL/CSA listed) Figure 18. Single Pole, Series C,Types EHD, FD, and HFD 45A—Curve No. SC-4429-88A Circuit breaker time/current curves Series C F-frame circuit breakers CatalogTypes: EHD, FD and HFD circuit breakers, single-pole. For application and coordination purposes only. Based on 40°C ambient, cold start. Connected with four (4) feet of rated wire (60°C up to 100A, 75°C above 125A) per terminal. Tested in open air. Maximum Vac: 277 at 50/60 Hz Maximum Vdc: 125 Notes: 1 Single-pole test data at 25°C based on NEMA procedures (AB 4-2003) for verifying performance of molded case circuit breakers. Symmetrical RMS amperes (kA) DC Amps EHD FD HFD 277V 125VBreakerType Interrupting Rating (UL/CSA Listed) 45A See curve Breaker rating Continuous amperes Instantaneous trip, amperes 14 10 35 10 65 10
  • 22. 22 Time Current Curves TC01200002E Effective March 2018 Series C F-Frame EATON www.eaton.com Interrupting rating determines end of curve Minimum Maximum 100 50 30 20 10 5 3 2 1 .5 .3 .2 .1 .05 .03 .02 .01 .005 .003 .002 .001 TIMEINSECONDS 1,000 500 300 200 5,000 3,000 2,000 1HOUR1MINUTE2HOURS 10000 8000 6000 9000 7000 5000 4000 3000 2000 1000 800 600 900 700 500 400 300 200 100 8060 907050403020109875 6 TIMEINSECONDS 10,000 100 50 30 20 10 5 3 2 1 .5 .3 .2 .1 .05 .03 .02 .01 .005 .003 .002 .001 1,000 500 300 200 5,000 3,000 2,000 1HOUR1MINUTE2HOURS CURRENT IN AMPERES 10000 8000 6000 9000 7000 5000 4000 3000 2000 1000 800 600 900 700 500 400 300 200 100 8060 907050403020109875 6 50A Maximum single- pole trip times at 25°C 1 CURRENT IN AMPERES Maximum interrupting time Circuit breaker time/current curves Series C ® F-frame circuit breakers Catalog types EHD, FD and HFD circuit breakers, single-pole. For application and coordination purposes only. Based on 40˚C ambient, cold start. Connected with four (4) feet of rated wire (60˚C up to 100A, 75˚C above 125A) per terminal. Tested in open air. Maximum Vac: 277 at 50/60 Hz Maximum Vdc: 125 Breaker rating Continuous amperes Instantaneous trip, amperes 50A See curve Breaker type Symmetrical Rms amperes (kA ) 14 35 65 EHD FD HFD 10 10 10 Single-pole test data at 25˚C based on NEMA procedures (AB 4-2003) for verifying performance of molded case circuit breakers. 277V DC amps 125V Interrupting rating (UL/CSA listed) Figure 19. Single Pole, Series C,Types EHD, FD, and HFD 50A—Curve Number SC-4430-88A Circuit breaker time/current curves Series C F-frame circuit breakers CatalogTypes: EHD, FD and HFD circuit breakers, single-pole. For application and coordination purposes only. Based on 40°C ambient, cold start. Connected with four (4) feet of rated wire (60°C up to 100A, 75°C above 125A) per terminal. Tested in open air. Maximum Vac: 277 at 50/60 Hz Maximum Vdc: 125 Notes: 1 Single-pole test data at 25°C based on NEMA procedures (AB 4-2003) for verifying performance of molded case circuit breakers. Symmetrical RMS amperes (kA) DC Amps EHD FD HFD 277V 125VBreakerType Interrupting Rating (UL/CSA Listed) 50A See curve Breaker rating Continuous amperes Instantaneous trip, amperes 14 10 35 10 65 10
  • 23. 23 Time Current Curves TC01200002E Effective March 2018 Series C F-Frame EATON www.eaton.com Interrupting rating determines end of curve Minimum Maximum 100 50 30 20 10 5 3 2 1 .5 .3 .2 .1 .05 .03 .02 .01 .005 .003 .002 .001 TIMEINSECONDS 1,000 500 300 200 5,000 3,000 2,000 1HOUR1MINUTE2HOURS 10000 8000 6000 9000 7000 5000 4000 3000 2000 1000 800 600 900 700 500 400 300 200 100 8060 907050403020109875 6 TIMEINSECONDS 10,000 100 50 30 20 10 5 3 2 1 .5 .3 .2 .1 .05 .03 .02 .01 .005 .003 .002 .001 1,000 500 300 200 5,000 3,000 2,000 1HOUR1MINUTE2HOURS CURRENT IN AMPERES 10000 8000 6000 9000 7000 5000 4000 3000 2000 1000 800 600 900 700 500 400 300 200 100 8060 907050403020109875 6 60A Maximum single- pole trip times at 25°C 1 CURRENT IN AMPERES Maximum interrupting time Circuit breaker time/current curves Series C ® F-frame circuit breakers Catalog types EHD, FD and HFD circuit breakers, single-pole. For application and coordination purposes only. Based on 40˚C ambient, cold start. Connected with four (4) feet of rated wire (60˚C up to 100A, 75˚C above 125A) per terminal. Tested in open air. Maximum Vac: 277 at 50/60 Hz Maximum Vdc: 125 Breaker rating Continuous amperes Instantaneous trip, amperes 60A See curve Single-pole test data at 25˚C based on NEMA procedures (AB 4-2003) for verifying performance of molded case circuit breakers. Breaker type Symmetrical Rms amperes (kA ) 14 35 65 EHD FD HFD 10 10 10 277V DC amps 125V Interrupting rating (UL/CSA listed) Figure 20. Single Pole, Series C,Types EHD, FD, and HFD 60A—Curve Number SC-4431-88A Circuit breaker time/current curves Series C F-frame circuit breakers CatalogTypes: EHD, FD and HFD circuit breakers, single-pole. For application and coordination purposes only. Based on 40°C ambient, cold start. Connected with four (4) feet of rated wire (60°C up to 100A, 75°C above 125A) per terminal. Tested in open air. Maximum Vac: 277 at 50/60 Hz Maximum Vdc: 125 Notes: 1 Single-pole test data at 25°C based on NEMA procedures (AB 4-2003) for verifying performance of molded case circuit breakers. Symmetrical RMS amperes (kA) DC Amps EHD FD HFD 277V 125VBreakerType Interrupting Rating (UL/CSA Listed) 60A See curve Breaker rating Continuous amperes Instantaneous trip, amperes 14 10 35 10 65 10
  • 24. 24 Time Current Curves TC01200002E Effective March 2018 Series C F-Frame EATON www.eaton.com Interrupting rating determines end of curve Minimum Maximum 100 50 30 20 10 5 3 2 1 .5 .3 .2 .1 .05 .03 .02 .01 .005 .003 .002 .001 TIMEINSECONDS 1,000 500 300 200 5,000 3,000 2,000 1HOUR1MINUTE2HOURS 10000 8000 6000 9000 7000 5000 4000 3000 2000 1000 800 600 900 700 500 400 300 200 100 8060 907050403020109875 6 TIMEINSECONDS10,000 100 50 30 20 10 5 3 2 1 .5 .3 .2 .1 .05 .03 .02 .01 .005 .003 .002 .001 1,000 500 300 200 5,000 3,000 2,000 1HOUR1MINUTE2HOURS CURRENT IN AMPERES 10000 8000 6000 9000 7000 5000 4000 3000 2000 1000 800 600 900 700 500 400 300 200 100 8060 907050403020109875 6 70A Maximum single- pole trip times at 25°C 1 CURRENT IN AMPERES Maximum interrupting time Circuit breaker time/current curves Series C ® F-frame circuit breakers Catalog types EHD, FD and HFD circuit breakers, single-pole. For application and coordination purposes only. Based on 40˚C ambient, cold start. Connected with four (4) feet of rated wire (60˚C up to 100A, 75˚C above 125A) per terminal. Tested in open air. Maximum Vac: 277 at 50/60 Hz Maximum Vdc: 125 Breaker rating Continuous amperes Instantaneous trip, amperes 70A See curve Single-pole test data at 25˚C based on NEMA procedures (AB 4-2003) for verifying performance of molded case circuit breakers. Breaker type Symmetrical Rms amperes (kA ) 14 35 65 EHD FD HFD 10 10 10 277V DC amps 125V Interrupting rating (UL/CSA listed) Figure 21. Single Pole, Series C,Types EHD, FD, and HFD 70A—Curve Number SC-4432-88A Circuit breaker time/current curves Series C F-frame circuit breakers CatalogTypes: EHD, FD and HFD circuit breakers, single-pole. For application and coordination purposes only. Based on 40°C ambient, cold start. Connected with four (4) feet of rated wire (60°C up to 100A, 75°C above 125A) per terminal. Tested in open air. Maximum Vac: 277 at 50/60 Hz Maximum Vdc: 125 Notes: 1 Single-pole test data at 25°C based on NEMA procedures (AB 4-2003) for verifying performance of molded case circuit breakers. Symmetrical RMS amperes (kA) DC Amps EHD FD HFD 277V 125VBreakerType Interrupting Rating (UL/CSA Listed) 70A See curve Breaker rating Continuous amperes Instantaneous trip, amperes 14 10 35 10 65 10
  • 25. 25 Time Current Curves TC01200002E Effective March 2018 Series C F-Frame EATON www.eaton.com Interrupting rating determines end of curve Minimum Maximum 100 50 30 20 10 5 3 2 1 .5 .3 .2 .1 .05 .03 .02 .01 .005 .003 .002 .001 TIMEINSECONDS 1,000 500 300 200 5,000 3,000 2,000 1HOUR1MINUTE2HOURS 10000 8000 6000 9000 7000 5000 4000 3000 2000 1000 800 600 900 700 500 400 300 200 100 8060 907050403020109875 6 TIMEINSECONDS 10,000 100 50 30 20 10 5 3 2 1 .5 .3 .2 .1 .05 .03 .02 .01 .005 .003 .002 .001 1,000 500 300 200 5,000 3,000 2,000 1HOUR1MINUTE2HOURS CURRENT IN AMPERES 10000 8000 6000 9000 7000 5000 4000 3000 2000 1000 800 600 900 700 500 400 300 200 100 8060 907050403020109875 6 80A Maximum single- pole trip times at 25°C 1 CURRENT IN AMPERES Maximum interrupting time Circuit breaker time/current curves Series C ® F-frame circuit breakers Catalog types EHD, FD and HFD circuit breakers, single-pole. For application and coordination purposes only. Based on 40˚C ambient, cold start. Connected with four (4) feet of rated wire (60˚C up to 100A, 75˚C above 125A) per terminal. Tested in open air. Maximum Vac: 277 at 50/60 Hz Maximum Vdc: 125 Breaker rating Continuous amperes Instantaneous trip, amperes 80A See curve Single-pole test data at 25˚C based on NEMA procedures (AB 4-2003) for verifying performance of molded case circuit breakers. Breaker type Symmetrical Rms amperes (kA ) 14 35 65 EHD FD HFD 10 10 10 277V DC amps 125V Interrupting rating (UL/CSA listed) Figure 22. Single Pole, Series C,Types EHD, FD, and HFD 80A—Curve Number SC-4433-88A Circuit breaker time/current curves Series C F-frame circuit breakers CatalogTypes: EHD, FD and HFD circuit breakers, single-pole. For application and coordination purposes only. Based on 40°C ambient, cold start. Connected with four (4) feet of rated wire (60°C up to 100A, 75°C above 125A) per terminal. Tested in open air. Maximum Vac: 277 at 50/60 Hz Maximum Vdc: 125 Notes: 1 Single-pole test data at 25°C based on NEMA procedures (AB 4-2003) for verifying performance of molded case circuit breakers. Symmetrical RMS amperes (kA) DC Amps EHD FD HFD 277V 125VBreakerType Interrupting Rating (UL/CSA Listed) 80A See curve Breaker rating Continuous amperes Instantaneous trip, amperes 14 10 35 10 65 10
  • 26. 26 Time Current Curves TC01200002E Effective March 2018 Series C F-Frame EATON www.eaton.com Interrupting rating determines end of curve Minimum Maximum 100 50 30 20 10 5 3 2 1 .5 .3 .2 .1 .05 .03 .02 .01 .005 .003 .002 .001 TIMEINSECONDS 1,000 500 300 200 5,000 3,000 2,000 1HOUR1MINUTE2HOURS 10000 8000 6000 9000 7000 5000 4000 3000 2000 1000 800 600 900 700 500 400 300 200 100 8060 907050403020109875 6 TIMEINSECONDS10,000 100 50 30 20 10 5 3 2 1 .5 .3 .2 .1 .05 .03 .02 .01 .005 .003 .002 .001 1,000 500 300 200 5,000 3,000 2,000 1HOUR1MINUTE2HOURS CURRENT IN AMPERES 10000 8000 6000 9000 7000 5000 4000 3000 2000 1000 800 600 900 700 500 400 300 200 100 8060 907050403020109875 6 90A Maximum single- pole trip times at 25°C 1 CURRENT IN AMPERES Maximum interrupting time Circuit breaker time/current curves Series C ® F-frame circuit breakers Catalog types EHD, FD and HFD circuit breakers, single-pole. For application and coordination purposes only. Based on 40˚C ambient, cold start. Connected with four (4) feet of rated wire (60˚C up to 100A, 75˚C above 125A) per terminal. Tested in open air. Maximum Vac: 277 at 50/60 Hz Maximum Vdc: 125 Breaker rating Continuous amperes Instantaneous trip, amperes 90A See curve Single-pole test data at 25˚C based on NEMA procedures (AB 4-2003) for verifying performance of molded case circuit breakers. Breaker type Symmetrical Rms amperes (kA ) 14 35 65 EHD FD HFD 10 10 10 277V DC amps 125V Interrupting rating (UL/CSA listed) Figure 23. Single Pole, Series C,Types EHD, FD, and HFD 90A—Curve Number SC-4434-88A Circuit breaker time/current curves Series C F-frame circuit breakers CatalogTypes: EHD, FD and HFD circuit breakers, single-pole. For application and coordination purposes only. Based on 40°C ambient, cold start. Connected with four (4) feet of rated wire (60°C up to 100A, 75°C above 125A) per terminal. Tested in open air. Maximum Vac: 277 at 50/60 Hz Maximum Vdc: 125 Notes: 1 Single-pole test data at 25°C based on NEMA procedures (AB 4-2003) for verifying performance of molded case circuit breakers. Symmetrical RMS amperes (kA) DC Amps EHD FD HFD 277V 125VBreakerType Interrupting Rating (UL/CSA Listed) 90A See curve Breaker rating Continuous amperes Instantaneous trip, amperes 14 10 35 10 65 10
  • 27. 27 Time Current Curves TC01200002E Effective March 2018 Series C F-Frame EATON www.eaton.com Interrupting rating determines end of curve Minimum Maximum 100 50 30 20 10 5 3 2 1 .5 .3 .2 .1 .05 .03 .02 .01 .005 .003 .002 .001 TIMEINSECONDS 1,000 500 300 200 5,000 3,000 2,000 1HOUR1MINUTE2HOURS 10000 8000 6000 9000 7000 5000 4000 3000 2000 1000 800 600 900 700 500 400 300 200 100 8060 907050403020109875 6 TIMEINSECONDS 10,000 100 50 30 20 10 5 3 2 1 .5 .3 .2 .1 .05 .03 .02 .01 .005 .003 .002 .001 1,000 500 300 200 5,000 3,000 2,000 1HOUR1MINUTE2HOURS CURRENT IN AMPERES 10000 8000 6000 9000 7000 5000 4000 3000 2000 1000 800 600 900 700 500 400 300 200 100 8060 907050403020109875 6 100A Maximum single- pole trip times at 25°C 1 CURRENT IN AMPERES Maximum interrupting time Circuit breaker time/current curves Series C ® F-frame circuit breakers Catalog types EHD, FD and HFD circuit breakers, single-pole. For application and coordination purposes only. Based on 40˚C ambient, cold start. Connected with four (4) feet of rated wire (60˚C up to 100A, 75˚C above 125A) per terminal. Tested in open air. Maximum Vac: 277 at 50/60 Hz Maximum Vdc: 125 Breaker rating Continuous amperes Instantaneous trip, amperes 100A See curve Single-pole test data at 25˚C based on NEMA procedures (AB 4-2003) for verifying performance of molded case circuit breakers. Breaker type Symmetrical Rms amperes (kA ) 14 35 65 EHD FD HFD 10 10 10 277V DC amps 125V Interrupting rating (UL/CSA listed) Figure 24. Single Pole, Series C,Types EHD, FD, and HFD 100A—Curve Number SC-4435-88A Circuit breaker time/current curves Series C F-frame circuit breakers CatalogTypes: EHD, FD and HFD circuit breakers, single-pole. For application and coordination purposes only. Based on 40°C ambient, cold start. Connected with four (4) feet of rated wire (60°C up to 100A, 75°C above 125A) per terminal. Tested in open air. Maximum Vac: 277 at 50/60 Hz Maximum Vdc: 125 Notes: 1 Single-pole test data at 25°C based on NEMA procedures (AB 4-2003) for verifying performance of molded case circuit breakers. Symmetrical RMS amperes (kA) DC Amps EHD FD HFD 277V 125VBreakerType Interrupting Rating (UL/CSA Listed) 100A See curve Breaker rating Continuous amperes Instantaneous trip, amperes 14 10 35 10 65 10
  • 28. 28 Time Current Curves TC01200002E Effective March 2018 Series C F-Frame EATON www.eaton.com Interrupting rating determines end of curve Minimum Maximum 100 50 30 20 10 5 3 2 1 .5 .3 .2 .1 .05 .03 .02 .01 .005 .003 .002 .001 TIMEINSECONDS 1,000 500 300 200 5,000 3,000 2,000 1HOUR1MINUTE2HOURS 10000 8000 6000 9000 7000 5000 4000 3000 2000 1000 800 600 900 700 500 400 300 200 100 8060 907050403020109875 6 TIMEINSECONDS10,000 100 50 30 20 10 5 3 2 1 .5 .3 .2 .1 .05 .03 .02 .01 .005 .003 .002 .001 1,000 500 300 200 5,000 3,000 2,000 1HOUR1MINUTE2HOURS CURRENT IN AMPERES 10000 8000 6000 9000 7000 5000 4000 3000 2000 1000 800 600 900 700 500 400 300 200 100 8060 907050403020109875 6 110A Maximum single- pole trip times at 25°C 1 CURRENT IN AMPERES Maximum interrupting time ® F-frame circuit breakers 277 at 50/60 Hz 125 10 10 DC amps 125V Figure 25. Single Pole, Series C,Types FD and HFD 110A—Curve Number SC-4436-88A Circuit breaker time/current curves Series C F-frame circuit breakers CatalogTypes: EHD, FD and HFD circuit breakers, single-pole. For application and coordination purposes only. Based on 40°C ambient, cold start. Connected with four (4) feet of rated wire (60°C up to 100A, 75°C above 125A) per terminal. Tested in open air. Maximum Vac: 277 at 50/60 Hz Maximum Vdc: 125 Notes: 1 Single-pole test data at 25°C based on NEMA procedures (AB 4-2003) for verifying performance of molded case circuit breakers. Symmetrical RMS amperes (kA) DC Amps FD HFD 277V 125VBreakerType Interrupting Rating (UL/CSA Listed) 110A See curve Breaker rating Continuous amperes Instantaneous trip, amperes 35 10 65 10
  • 29. 29 Time Current Curves TC01200002E Effective March 2018 Series C F-Frame EATON www.eaton.com Interrupting rating determines end of curve Minimum Maximum 100 50 30 20 10 5 3 2 1 .5 .3 .2 .1 .05 .03 .02 .01 .005 .003 .002 .001 TIMEINSECONDS 1,000 500 300 200 5,000 3,000 2,000 1HOUR1MINUTE2HOURS 10000 8000 6000 9000 7000 5000 4000 3000 2000 1000 800 600 900 700 500 400 300 200 100 8060 907050403020109875 6 TIMEINSECONDS 10,000 100 50 30 20 10 5 3 2 1 .5 .3 .2 .1 .05 .03 .02 .01 .005 .003 .002 .001 1,000 500 300 200 5,000 3,000 2,000 1HOUR1MINUTE2HOURS CURRENT IN AMPERES 10000 8000 6000 9000 7000 5000 4000 3000 2000 1000 800 600 900 700 500 400 300 200 100 8060 907050403020109875 6 125A Maximum single- pole trip times at 25°C 1 CURRENT IN AMPERES Maximum interrupting time ® F-frame circuit breakers For application and coordination purposes only. Based on 40˚C ambient, cold start. Connected with four (4) feet of rated wire (60˚C up to 100A, 75˚C above 125A) per terminal. Tested in open air. Maximum Vac: 277 at 50/60 Hz Maximum Vdc: 125 Breaker rating Continuous amperes Instantaneous trip, amperes 125A See curve Single-pole test data at 25˚C based on NEMA procedures (AB 4-2003) for verifying performance of molded case circuit breakers. Breaker type Symmetrical Rms amperes (kA ) 35 65 FD HFD 10 10 277V DC amps 125V Interrupting rating (UL/CSA listed) Figure 26. Single Pole, Series C,Types FD and HFD 125A—Curve Number SC-4437-88A Circuit breaker time/current curves Series C F-frame circuit breakers CatalogTypes: FD and HFD circuit breakers, single-pole. For application and coordination purposes only. Based on 40°C ambient, cold start. Connected with four (4) feet of rated wire (60°C up to 100A, 75°C above 125A) per terminal. Tested in open air. Maximum Vac: 277 at 50/60 Hz Maximum Vdc: 125 Notes: 1 Single-pole test data at 25°C based on NEMA procedures (AB 4-2003) for verifying performance of molded case circuit breakers. Symmetrical RMS amperes (kA) DC Amps FD HFD 277V 125VBreakerType Interrupting Rating (UL/CSA Listed) 125A See curve Breaker rating Continuous amperes Instantaneous trip, amperes 35 10 65 10
  • 30. 30 Time Current Curves TC01200002E Effective March 2018 Series C F-Frame EATON www.eaton.com Interrupting rating determines end of curve Minimum Maximum 100 50 30 20 10 5 3 2 1 .5 .3 .2 .1 .05 .03 .02 .01 .005 .003 .002 .001 TIMEINSECONDS 1,000 500 300 200 5,000 3,000 2,000 1HOUR1MINUTE2HOURS 10000 8000 6000 9000 7000 5000 4000 3000 2000 1000 800 600 900 700 500 400 300 200 100 8060 907050403020109875 6 TIMEINSECONDS10,000 100 50 30 20 10 5 3 2 1 .5 .3 .2 .1 .05 .03 .02 .01 .005 .003 .002 .001 1,000 500 300 200 5,000 3,000 2,000 1HOUR1MINUTE2HOURS CURRENT IN AMPERES 10000 8000 6000 9000 7000 5000 4000 3000 2000 1000 800 600 900 700 500 400 300 200 100 8060 907050403020109875 6 150A Maximum single- pole triptimes at 25°C 1 CURRENT IN AMPERES Maximum interrupting time Circuit breaker time/current curves Series C ® F-frame circuit breakers Catalog types FD and HFD circuit breakers, single-pole. For application and coordination purposes only. Based on 40˚C ambient, cold start. Connected with four (4) feet of rated wire (60˚C up to 100A, 75˚C above 125A) per terminal. Tested in open air. Maximum Vac: 277 at 50/60 Hz Maximum Vdc: 125 Breaker rating Continuous amperes Instantaneous trip, amperes 150A See curve Single-pole test data at 25˚C based on NEMA procedures (AB 4-2003) for verifying performance of molded case circuit breakers. Breaker type Symmetrical Rms amperes (kA ) 35 65 FD HFD 10 10 277V DC amps 125V Interrupting rating (UL/CSA listed) Figure 27. Single Pole, Series C,Types FD and HFD 150A—Curve Number SC-4438-88A Circuit breaker time/current curves Series C F-frame circuit breakers CatalogTypes: FD and HFD circuit breakers, single-pole. For application and coordination purposes only. Based on 40°C ambient, cold start. Connected with four (4) feet of rated wire (60°C up to 100A, 75°C above 125A) per terminal. Tested in open air. Maximum Vac: 277 at 50/60 Hz Maximum Vdc: 125 Notes: 1 Single-pole test data at 25°C based on NEMA procedures (AB 4-2003) for verifying performance of molded case circuit breakers. Symmetrical RMS amperes (kA) DC Amps FD HFD 277V 125VBreakerType Interrupting Rating (UL/CSA Listed) 150A See curve Breaker rating Continuous amperes Instantaneous trip, amperes 35 10 65 10
  • 31. 31 Time Current Curves TC01200002E Effective March 2018 Series C F-Frame EATON www.eaton.com 0.01 0.10 1.00 10.00 100.00 1000.00 10000.00 10 100 1000 10000 100000 1000000 TimeinSeconds Current in Amperes ED, EHD, FDB FD, HFD, FDC 15A 2, 3 & 4 pole Maximum Tolerance Minimum Tolerance Circuit Breaker time/current curves Series C F-Frame Circuit Breakers Catalog Types: ED, EHD, FDB, FD, HFD, FDC for two, three and four pole breakers For application andcoordinationpurposesonly. Based on cold start at rated ambient temperature. Connected with four (4) feet of rated wire (60/75°C) per terminal with all poleswired in series. Tested in openair. Instantaneoustrippingissingle pole. Maximum Vac: 600V at 50/60Hz Maximum Vdc: 250V Breaker Rating ContinuousAmps Instantaneoustrip amperes 15A See curve May be 42% higher for dc voltages Interruption Ratings (UL/CSA listed) Breaker Symmetrical RMS amperes(kA) Type 240 Vac 480Vac 600 Vac 250 Vdc 125 Vdc ED 65 -- -- -- 10 EHD 18 14 -- 10 -- FDB 18 14 14 10 -- FD 65 35 18 10 -- HFD 100 65 25 22 -- FDC 200 100 35 22 -- Maximum Single Pole Trip Times at 25 C interruption rating and application determines end of curve 600V480V240V Figure 28. Types ED, EHD, FDB, FD, FDC, and HFD 15A 2, 3 & 4 pole—Curve NumberTC012036EN AB DE-ION Circuit Breakers—two-, three-, and four-poles
  • 32. 32 Time Current Curves TC01200002E Effective March 2018 Series C F-Frame EATON www.eaton.com Eaton Corporation January 2012 0.01 0.10 1.00 10.00 100.00 1000.00 10000.00 10 100 1000 10000 100000 1000000 TimeinSeconds Current in Amperes ED, EHD, FDB FD, HFD, FDC 20A 2, 3 & 4 pole Maximum Tolerance Minimum Tolerance Circuit Breaker time/current curves Series C F-Frame Circuit Breakers Catalog Types: ED, EHD, FDB, FD, HFD, FDC for two, three and four pole breakers For application and coordination purposes only. Based on cold start at rated ambient temperature. Connected with four (4) feet of rated wire (60/75°C) per terminal with all poles wired in series. Tested in open air. Instantaneous tripping is single pole. Maximum Vac: 600V at 50/60Hz Maximum Vdc: 250V Breaker Rating Continuous Amps Instantaneous trip amperes 20A See curve May be 42% higher for dc voltages Interruption Ratings (UL/CSA listed) Breaker Symmetrical RMS amperes (kA) Type 240 Vac 480Vac 600 Vac 250 Vdc 125 Vdc ED 65 -- -- -- 10 EHD 18 14 -- 10 -- FDB 18 14 14 10 -- FD 65 35 18 10 -- HFD 100 65 25 22 -- FDC 200 100 35 22 -- Maximum Single Pole Trip Times at 25°C interruption rating and application determines end of curve 600V480V240V Figure 29.Types ED, EHD, FDB, FD, FDC, and HFD 20A 2, 3 & 4 pole—Curve NumberTC012037EN
  • 33. 33 Time Current Curves TC01200002E Effective March 2018 Series C F-Frame EATON www.eaton.com Eaton Corporation January 2012 0.01 0.10 1.00 10.00 100.00 1000.00 10000.00 10 100 1000 10000 100000 1000000 TimeinSeconds Current in Amperes ED, EHD, FDB FD, HFD, FDC 25A 2, 3 & 4 pole Maximum Tolerance Minimum Tolerance Circuit Breaker time/current curves Series C F-Frame Circuit Breakers Catalog Types: ED, EHD, FDB, FD, HFD, FDC for two, three and four pole breakers For application and coordination purposes only. Based on cold start at rated ambient temperature. Connected with four (4) feet of rated wire (60/75°C) per terminal with all poles wired in series. Tested in open air. Instantaneous tripping is single pole. Maximum Vac: 600V at 50/60Hz Maximum Vdc: 250V Breaker Rating Continuous Amps Instantaneous trip amperes 25A See curve May be 42% higher for dc voltages Interruption Ratings (UL/CSA listed) Breaker Symmetrical RMS amperes (kA) Type 240 Vac 480Vac 600 Vac 250 Vdc 125 Vdc ED 65 -- -- -- 10 EHD 18 14 -- 10 -- FDB 18 14 14 10 -- FD 65 35 18 10 -- HFD 100 65 25 22 -- FDC 200 100 35 22 -- Maximum Single Pole Trip Times at 25°C interruption rating and application determines end of curve 600V480V240V Figure 30.Types ED, EHD, FDB, FD, FDC, and HFD 25A 2, 3 & 4 pole—Curve NumberTC012038EN
  • 34. 34 Time Current Curves TC01200002E Effective March 2018 Series C F-Frame EATON www.eaton.com Eaton Corporation January 2012 0.01 0.10 1.00 10.00 100.00 1000.00 10000.00 10 100 1000 10000 100000 1000000 TimeinSeconds Current in Amperes ED, EDH, EHD, FDB FD, HFD, FDC 30A 2, 3 & 4 pole Maximum Tolerance Minimum Tolerance Circuit Breaker time/current curves Series C F-Frame Circuit Breakers Catalog Types: ED, EHD,FDB, FD, HFD, FDC for two, three and four pole breakers For application and coordination purposes only. Based on cold start at rated ambient temperature. Connected with four (4) feet of rated wire (60/75°C) per terminal with all poles wired in series. Tested in open air. Instantaneous tripping is single pole. Maximum Vac: 600V at 50/60Hz Maximum Vdc: 250V Breaker Rating Continuous Amps Instantaneous trip amperes 30A See curve May be 42% higher for dc voltages Interruption Ratings (UL/CSA listed) Breaker Symmetrical RMS amperes (kA) Type 240 Vac 480Vac 600 Vac 250 Vdc 125 Vdc ED 65 -- -- -- 10 EHD 18 14 -- 10 -- FDB 18 14 14 10 -- FD 65 35 18 10 -- HFD 100 65 25 22 -- FDC 200 100 35 22 -- Maximum Single Pole Trip Times at 25°C interruption rating and application determines end of curve 600V480V240V Figure 31.Types ED, EHD, FDB, FD, FDC, and HFD 30A 2, 3 & 4 pole—Curve NumberTC012039EN
  • 35. 35 Time Current Curves TC01200002E Effective March 2018 Series C F-Frame EATON www.eaton.com Eaton Corporation January 2012 0.01 0.10 1.00 10.00 100.00 1000.00 10000.00 10 100 1000 10000 100000 1000000 TimeinSeconds Current in Amperes ED, EHD, FDB FD, HFD, FDC 35A 2, 3 & 4 pole Maximum Tolerance Minimum Tolerance Circuit Breaker time/current curves Series C F-Frame Circuit Breakers Catalog Types: ED, EHD, FDB, FD, HFD, FDC for two, three and four pole breakers For application and coordination purposes only. Based on cold start at rated ambient temperature. Connected with four (4) feet of rated wire (60/75°C) per terminal with all poles wired in series. Tested in open air. Instantaneous tripping is single pole. Maximum Vac: 600V at 50/60Hz Maximum Vdc: 250V Breaker Rating Continuous Amps Instantaneous trip amperes 35A See curve May be 42% higher for dc voltages Interruption Ratings (UL/CSA listed) Breaker Symmetrical RMS amperes (kA) Type 240 Vac 480Vac 600 Vac 250 Vdc 125 Vdc ED 65 -- -- -- 10 EHD 18 14 -- 10 -- FDB 18 14 14 10 -- FD 65 35 18 10 -- HFD 100 65 25 22 -- FDC 200 100 35 22 -- Maximum Single Pole Trip Times at 25°C interruption rating and application determines end of curve 600V480V240V Figure 32.Types ED, EHD, FDB, FD, FDC, and HFD 35A 2, 3 & 4 pole—Curve NumberTC012040EN
  • 36. 36 Time Current Curves TC01200002E Effective March 2018 Series C F-Frame EATON www.eaton.com Eaton Corporation January 2012 0.01 0.10 1.00 10.00 100.00 1000.00 10000.00 10 100 1000 10000 100000 1000000 TimeinSeconds Current in Amperes ED, EHD, FDB FD, HFD, FDC 40A 2, 3 & 4 pole Maximum Tolerance Minimum Tolerance Circuit Breaker time/current curves Series C F-Frame Circuit Breakers Catalog Types: ED, EHD, FDB, FD, HFD, FDC for two, three and four pole breakers For application and coordination purposes only. Based on cold start at rated ambient temperature. Connected with four (4) feet of rated wire (60/75°C) per terminal with all poles wired in series. Tested in open air. Instantaneous tripping is single pole. Maximum Vac: 600V at 50/60Hz Maximum Vdc: 250V Breaker Rating Continuous Amps Instantaneous trip amperes 40A See curve May be 42% higher for dc voltages Interruption Ratings (UL/CSA listed) Breaker Symmetrical RMS amperes (kA) Type 240 Vac 480Vac 600 Vac 250 Vdc 125 Vdc ED 65 -- -- -- 10 EHD 18 14 -- 10 -- FDB 18 14 14 10 -- FD 65 35 18 10 -- HFD 100 65 25 22 -- FDC 200 100 35 22 -- Maximum Single Pole Trip Times at 25°C interruption rating and application determines end of curve 600V480V240V Figure 33.Types ED, EHD, FDB, FD, FDC, and HFD 40A 2, 3 & 4 pole—Curve NumberTC012041EN
  • 37. 37 Time Current Curves TC01200002E Effective March 2018 Series C F-Frame EATON www.eaton.com Eaton Corporation January 2012 0.01 0.10 1.00 10.00 100.00 1000.00 10000.00 10 100 1000 10000 100000 1000000 TimeinSeconds Current in Amperes ED, EHD, FDB FD, HFD, FDC 45A 2, 3 & 4 pole Maximum Tolerance Minimum Tolerance Circuit Breaker time/current curves Series C F-Frame Circuit Breakers Catalog Types: ED, EHD, FDB, FD, HFD, FDC for two, three and four pole breakers For application and coordination purposes only. Based on cold start at rated ambient temperature. Connected with four (4) feet of rated wire (60/75°C) per terminal with all poles wired in series. Tested in open air. Instantaneous tripping is single pole. Maximum Vac: 600V at 50/60Hz Maximum Vdc: 250V Breaker Rating Continuous Amps Instantaneous trip amperes 45A See curve May be 42% higher for dc voltages Interruption Ratings (UL/CSA listed) Breaker Symmetrical RMS amperes (kA) Type 240 Vac 480Vac 600 Vac 250 Vdc 125 Vdc ED 65 -- -- -- 10 EHD 18 14 -- 10 -- FDB 18 14 14 10 -- FD 65 35 18 10 -- HFD 100 65 25 22 -- FDC 200 100 35 22 -- Maximum Single Pole Trip Times at 25°C interruption rating and application determines end of curve 600V480V240V Figure 34.Types ED, EHD, FDB, FD, FDC, and HFD 45A 2, 3 & 4 pole—Curve NumberTC012042EN
  • 38. 38 Time Current Curves TC01200002E Effective March 2018 Series C F-Frame EATON www.eaton.com Eaton Corporation January 2012 0.01 0.10 1.00 10.00 100.00 1000.00 10000.00 10 100 1000 10000 100000 1000000 TimeinSeconds Current in Amperes ED, EHD, FDB FD, HFD, FDC 50A 2, 3 & 4 pole Maximum Tolerance Minimum Tolerance Circuit Breaker time/current curves Series C F-Frame Circuit Breakers Catalog Types: ED, EHD, FDB, FD, HFD, FDC for two, three and four pole breakers For application and coordination purposes only. Based on cold start at rated ambient temperature. Connected with four (4) feet of rated wire (60/75°C) per terminal with all poles wired in series. Tested in open air. Instantaneous tripping is single pole. Maximum Vac: 600V at 50/60Hz Maximum Vdc: 250V Breaker Rating Continuous Amps Instantaneous trip amperes 50A See curve May be 42% higher for dc voltages Interruption Ratings (UL/CSA listed) Breaker Symmetrical RMS amperes (kA) Type 240 Vac 480Vac 600 Vac 250 Vdc 125 Vdc ED 65 -- -- -- 10 EHD 18 14 -- 10 -- FDB 18 14 14 10 -- FD 65 35 18 10 -- HFD 100 65 25 22 -- FDC 200 100 35 22 -- Maximum Single Pole Trip Times at 25°C interruption rating and application determines end of curve 600V480V240V Figure 35.Types ED, EHD, FDB, FD, FDC, and HFD 50A 2, 3 & 4 pole—Curve NumberTC012043EN
  • 39. 39 Time Current Curves TC01200002E Effective March 2018 Series C F-Frame EATON www.eaton.com Eaton Corporation January 2012 0.01 0.10 1.00 10.00 100.00 1000.00 10000.00 10 100 1000 10000 100000 1000000 TimeinSeconds Current in Amperes ED, EHD, FDB FD, HFD, FDC 60A 2, 3 & 4 pole Maximum Tolerance Minimum Tolerance Circuit Breaker time/current curves Series C F-Frame Circuit Breakers Catalog Types: ED, EHD, FDB, FD, HFD, FDC for two, three and four pole breakers For application and coordination purposes only. Based on cold start at rated ambient temperature. Connected with four (4) feet of rated wire (60/75°C) per terminal with all poles wired in series. Tested in open air. Instantaneous tripping is single pole. Maximum Vac: 600V at 50/60Hz Maximum Vdc: 250V Breaker Rating Continuous Amps Instantaneous trip amperes 60A See curve May be 42% higher for dc voltages Interruption Ratings (UL/CSA listed) Breaker Symmetrical RMS amperes (kA) Type 240 Vac 480Vac 600 Vac 250 Vdc 125 Vdc ED 65 -- -- -- 10 EHD 18 14 -- 10 -- FDB 18 14 14 10 -- FD 65 35 18 10 -- HFD 100 65 25 22 -- FDC 200 100 35 22 -- Maximum Single Pole Trip Times at 25°C interruption rating and application determines end of curve 600V480V240V Figure 36.Types ED, EHD, FDB, FD, FDC, and HFD 60A 2, 3 & 4 pole—Curve NumberTC012044EN
  • 40. 40 Time Current Curves TC01200002E Effective March 2018 Series C F-Frame EATON www.eaton.com Eaton Corporation January 2012 0.01 0.10 1.00 10.00 100.00 1000.00 10000.00 10 100 1000 10000 100000 1000000 TimeinSeconds Current in Amperes ED, EHD, FDB FD, HFD, FDC 70A 2, 3 & 4 pole Maximum Tolerance Minimum Tolerance Circuit Breaker time/current curves Series C F-Frame Circuit Breakers Catalog Types: ED, EHD, FDB, FD, HFD, FDC for two, three and four pole breakers For application and coordination purposes only. Based on cold start at rated ambient temperature. Connected with four (4) feet of rated wire (60/75°C) per terminal with all poles wired in series. Tested in open air. Instantaneous tripping is single pole. Maximum Vac: 600V at 50/60Hz Maximum Vdc: 250V Breaker Rating Continuous Amps Instantaneous trip amperes 70A See curve May be 42% higher for dc voltages Interruption Ratings (UL/CSA listed) Breaker Symmetrical RMS amperes (kA) Type 240 Vac 480Vac 600 Vac 250 Vdc 125 Vdc ED 65 -- -- -- 10 EHD 18 14 -- 10 -- FDB 18 14 14 10 -- FD 65 35 18 10 -- HFD 100 65 25 22 -- FDC 200 100 35 22 -- Maximum Single Pole Trip Times at 25°C interruption rating and application determines end of curve 600V480V240V Figure 37.Types ED, EHD, FDB, FD, FDC, and HFD 70A 2, 3 & 4 pole—Curve Number TC012045EN
  • 41. 41 Time Current Curves TC01200002E Effective March 2018 Series C F-Frame EATON www.eaton.com Eaton Corporation January 2012 0.01 0.10 1.00 10.00 100.00 1000.00 10000.00 10 100 1000 10000 100000 1000000 TimeinSeconds Current in Amperes ED, EHD, FDB FD, HFD, FDC 80A 2, 3 & 4 pole Maximum Tolerance Minimum Tolerance Circuit Breaker time/current curves Series C F-Frame Circuit Breakers Catalog Types: ED, EHD, FDB, FD, HFD, FDC for two, three and four pole breakers For application and coordination purposes only. Based on cold start at rated ambient temperature. Connected with four (4) feet of rated wire (60/75°C) per terminal with all poles wired in series. Tested in open air. Instantaneous tripping is single pole. Maximum Vac: 600V at 50/60Hz Maximum Vdc: 250V Breaker Rating Continuous Amps Instantaneous trip amperes 80A See curve May be 42% higher for dc voltages Interruption Ratings (UL/CSA listed) Breaker Symmetrical RMS amperes (kA) Type 240 Vac 480Vac 600 Vac 250 Vdc 125 Vdc ED 65 -- -- -- 10 EHD 18 14 -- 10 -- FDB 18 14 14 10 -- FD 65 35 18 10 -- HFD 100 65 25 22 -- FDC 200 100 35 22 -- Maximum Single Pole Trip Times at 25°C interruption rating and application determines end of curve 600V480V240V Figure 38.Types ED, EHD, FDB, FD, FDC, and HFD 80A 2, 3 & 4 pole—Curve Number TC012046EN
  • 42. 42 Time Current Curves TC01200002E Effective March 2018 Series C F-Frame EATON www.eaton.com Eaton Corporation January 2012 0.01 0.10 1.00 10.00 100.00 1000.00 10000.00 10 100 1000 10000 100000 1000000 TimeinSeconds Current in Amperes ED, EHD, FDB FD, HFD, FDC 90A 2, 3 & 4 pole Maximum Tolerance Minimum Tolerance Circuit Breaker time/current curves Series C F-Frame Circuit Breakers Catalog Types: ED, EHD, FDB, FD, HFD, FDC for two, three and four pole breakers For application and coordination purposes only. Based on cold start at rated ambient temperature. Connected with four (4) feet of rated wire (60/75°C) per terminal with all poles wired in series. Tested in open air. Instantaneous tripping is single pole. Maximum Vac: 600V at 50/60Hz Maximum Vdc: 250V Breaker Rating Continuous Amps Instantaneous trip amperes 90A See curve May be 42% higher for dc voltages Interruption Ratings (UL/CSA listed) Breaker Symmetrical RMS amperes (kA) Type 240 Vac 480Vac 600 Vac 250 Vdc 125 Vdc ED 65 -- -- -- 10 EHD 18 14 -- 10 -- FDB 18 14 14 10 -- FD 65 35 18 10 -- HFD 100 65 25 22 -- FDC 200 100 35 22 -- Maximum Single Pole Trip Times at 25°C interruption rating and application determines end of curve 600V480V240V Figure 39.Types ED, EHD, FDB, FD, FDC, and HFD 90A 2, 3 & 4 pole—Curve NumberTC012047EN
  • 43. 43 Time Current Curves TC01200002E Effective March 2018 Series C F-Frame EATON www.eaton.com 0.01 0.10 1.00 10.00 100.00 1000.00 10000.00 10 100 1000 10000 100000 1000000 TimeinSeconds Current in Amperes ED, EDB, EDS, EDH, EDC, EHD, FDB FD, HFD, FDC 100A 2, 3 & 4 pole Maximum Tolerance Minimum Tolerance Circuit Breaker time/current curves Series C F-Frame Circuit Breakers EDH, EDC, EHD,Catalog Types: ED, EDB, EDS, FDB, FD, HFD, FDC for two, three and four pole breakers For application and coordination purposes only. Based on cold start at rated ambient temperature. Connected with four (4) feet of rated wire (60/75°C) per terminal with all poles wired in series. Tested in open air. Instantaneous tripping is single pole. Maximum Vac: 600V at 50/60Hz Maximum Vdc: 250V Breaker Rating Continuous Amps Instantaneous trip amperes 100A see curve May be 42% higher for dc voltages Interruption Ratings (UL/CSA listed) Breaker Symmetrical RMS amperes (kA) Type 240 Vac 480Vac 600 Vac 250 Vdc 125 Vdc ED 65 -- -- -- 10 EDB 22 -- -- -- 10 EDS 42 -- -- -- 10 EDH 100 -- -- -- 10 EDC 200 -- -- -- 10 EHD 18 14 -- 10 -- FDB 18 14 14 10 -- FD 65 35 18 10 -- HFD 100 65 25 22 -- Maximum Single Pole Trip Times at 25°C interruption rating and application determines end of curve 600V480V240V FCD 200 100 35 22 -- Figure 40.Types ED, EDB, EDS, EDH, EDC, EHD, FDB, FD, HFD, FDC 100A 2, 3 & 4 pole—Curve NumberTC012029EN
  • 44. 44 Time Current Curves TC01200002E Effective March 2018 Series C F-Frame EATON www.eaton.com Figure 41.Types ED, EDB, EDS, EDH, EDC, EHD, FDB, FD, HFD, FDC 110A 2, 3, & 4 pole—Curve NumberTC012030EN
  • 45. 45 Time Current Curves TC01200002E Effective March 2018 Series C F-Frame EATON www.eaton.com Figure 42.Types ED, EDB, EDS, EDH, EDC, EHD, FDB, FD, HFD, FDC 125A 2, 3, & 4 pole—Curve NumberTC012031EN
  • 46. 46 Time Current Curves TC01200002E Effective March 2018 Series C F-Frame EATON www.eaton.com 0.010 0.100 1.000 10.000 100.000 1000.000 10000.000 10 100 1000 10000 100000 1000000 TimeinSeconds Current in Amperes ED, EDB, EDS, EDH, EDC, EHD, FDB, FD, HFD FDC 150A 2, 3 & 4 pole Maximum Tolerance Minimum Tolerance Maximum Single Pole Trip Times at 25°C interruption rating and application determines end of curve Circuit Breaker time/current curves Series C F-Frame Circuit Breakers Catalog Types: ED, EDB, EDS, EDH, EDC, EHD, FDB, FD, HFD, FDC for two, three and four pole breakers For application and coordination purposes only. Based on cold start at rated ambient temperature. Connected with four (4) feet of rated wire (60/75°C) per terminal with all poles wired inseries. Tested in open air. Instantaneous tripping is single pole. Maximum Vac: 600V at 50/60Hz Maximum Vdc: 250V Breaker Rating Continuous Amps Instantaneous trip amperes 150A see curve May be 42% higher for dc voltages Interruption Ratings (UL/CSA listed) Breaker Symmetrical RMS amperes (kA) Type 240 Vac 480Vac 600 Vac 250 Vdc 125 Vdc ED 65 -- -- -- 10 EDB 22 -- -- -- 10 EDS 42 -- -- -- 10 EDH 100 -- -- -- 10 EDC 200 -- -- -- 10 EHD 18 14 -- 10 -- FDB 18 14 14 10 -- FD 65 35 18 10 -- HFD 100 65 25 22 -- FDC 200 100 35 22 -- 600V480V240V Figure 43.Types ED, EDB, EDS, EDH, EDC, EHD, FDB, FD, HFD, FDC 150A 2, 3, & 4 pole—Curve NumberTC012032EN
  • 47. 47 Time Current Curves TC01200002E Effective March 2018 Series C F-Frame EATON www.eaton.com Eaton Corporation January 2012 0.010 0.100 1.000 10.000 100.000 1000.000 10000.000 10 100 1000 10000 100000 1000000 TimeinSeconds Current in Amperes ED, EDB, EDS, EDH, EDC, EHD, FDB FD, HFD, FDC 175A 2, 3 & 4 pole Maximum Tolerance Minimum Tolerance Circuit Breaker time/current curves Series C F-Frame Circuit Breakers EDH, EDC, EHD,Catalog Types: ED, EDB, EDS, FDB, FD, HFD,FDC for two, three and four pole breakers For application and coordination purposes only. Based on cold start at rated ambient temperature. Connected with four (4) feet of rated wire (60/75°C) per terminal with all poles wired in series. Tested in open air. Instantaneous tripping is single pole. Maximum Vac: 600V at 50/60Hz Maximum Vdc: 250V Breaker Rating Continuous Amps Instantaneous trip amperes 175A See curve May be 42% higher for dc voltages Interruption Ratings (UL/CSA listed) Breaker Symmetrical RMS amperes (kA) Type 240 Vac 480Vac 600 Vac 250 Vdc 125 Vdc ED 65 -- -- -- 10 EDB 22 -- -- -- 10 EDS 42 -- -- -- 10 EDH 100 -- -- -- 10 EDC 200 -- -- -- 10 EHD 18 14 -- 10 -- FDB 18 14 14 10 -- FD 65 35 18 10 -- HFD 100 65 25 22 -- FDC 200 100 35 22 -- Maximum Single Pole Trip Times at 25°C interruption rating and application determines end of curve 600V480V240V Figure 44.Types ED, EDB, EDS, EDH, EDC, EHD, FDB, FD, HFD, FDC 175A 2, 3 & 4 pole—Curve NumberTC012033EN
  • 48. 48 Time Current Curves TC01200002E Effective March 2018 Series C F-Frame EATON www.eaton.com Eaton Corporation January 2012 0.010 0.100 1.000 10.000 100.000 1000.000 10000.000 10 100 1000 10000 100000 1000000 TimeinSeconds Current in Amperes ED, EDB, EDS, EDH, EDC, EHD, FDB FD, HFD, FDC 200A 2, 3 & 4 pole Maximum Tolerance Minimum Tolerance Circuit Breaker time/current curves Series C F-Frame Circuit Breakers EDH, EDC, EHD,Catalog Types: ED, EDB, EDS, FDB, FD, HFD,FDC for two, three and four pole breakers For application and coordination purposes only. Based on cold start at rated ambient temperature. Connected with four (4) feet of rated wire (60/75°C) per terminal with all poles wired in series. Tested in open air. Instantaneous tripping is single pole. Maximum Vac: 600V at 50/60Hz Maximum Vdc: 250V Breaker Rating Continuous Amps Instantaneous trip amperes 200A See curve May be 42% higher for dc voltages Interruption Ratings (UL/CSA listed) Breaker Symmetrical RMS amperes (kA) Type 240 Vac 480Vac 600 Vac 250 Vdc 125 Vdc ED 65 -- -- -- 10 EDB 22 -- -- -- 10 EDS 42 -- -- -- 10 EDH 100 -- -- -- 10 EDC 200 -- -- -- 10 EHD 18 14 -- 10 -- FDB 18 14 14 10 -- FD 65 35 18 10 -- HFD 100 65 25 22 -- FDC 200 100 35 22 -- Maximum Single Pole Trip Times at 25°C interruption rating and application determines end of curve 600V480V240V Figure 45.Types ED, EDB, EDS, EDH, EDC, EHD, FDB, FD, HFD, FDC 200A 2, 3, & 4 pole—Curve NumberTC012034EN
  • 49. 49 Time Current Curves TC01200002E Effective March 2018 Series C F-Frame EATON www.eaton.com 0.010 0.100 1.000 10.000 100.000 1000.000 10000.000 10 100 1000 10000 100000 1000000 TimeinSeconds Current in Amperes ED, EDB, EDS, EDH, EDC, EHD, FDB FD, HFD, FDC 225A 2, 3 & 4 pole Maximum Tolerance Minimum Tolerance Circuit Breaker time/current curves Series C F-Frame Circuit Breakers EDH, EDC, EHD,Catalog Types: ED, EDB, EDS, FDB, FD, HFD, FDC for two, three and four pole breakers For application and coordination purposes only. Based on cold start at rated ambient temperature. Connected with four (4) feet of rated wire (60/75°C) per terminal with all poles wired in series. Tested in open air. Instantaneous tripping is single pole. Maximum Vac: 600V at 50/60Hz Maximum Vdc: 250V Breaker Rating Continuous Amps Instantaneous trip amperes 225A See curve May be 42% higher for dc voltages Interruption Ratings (UL/CSA listed) Breaker Symmetrical RMS amperes (kA) Type 240 Vac 480Vac 600 Vac 250 Vdc 125 Vdc ED 65 -- -- -- 10 EDB 22 -- -- -- 10 EDS 42 -- -- -- 10 EDH 100 -- -- -- 10 EDC 200 -- -- -- 10 EHD 18 14 -- 10 -- FDB 18 14 14 10 -- FD 65 35 18 10 -- HFD 100 65 25 22 -- FDC 200 100 35 22 -- Maximum Single Pole Trip Times at 25°C interruption rating and application determines end of curve 600V480V240V Figure 46.Types ED, EDB, EDS, EDH, EDC, EHD, FDB, FD, HFD, FDC 225A 2, 3, & 4 pole—Curve NumberTC012035EN
  • 50. Figure 48. Series CTypes FDC, JDC, KDC and LDC ­—240 V (Curve No. AD-29-166A) Figure 47. Series CTypes FDC, JDC, KDC and LDC ­—240 V (Curve No. AD-29-166A) AvailableShortCircuitCurrent,kArms Peak Let-Through Current, kA LDC3600 KDC3400 JDC3250 FDC3225 AvailableShortCircuitCurrent,kArms Peak Let-Through I2 t, A2 sec LDC3600 KDC3400 JDC3250 FDC3225 50kA 5kA 10kA 100kA 100 kA 500 kA 1000 kA 5 kA 50 kA 10 kA 1000 kA 500 kA 100 kA 50 kA 10 kA 5 kA 10,000,000 5,000,000 1,000,000 500,000 100,000 10,0001kA avail.Ipfor1st symm.1/2cycle 1 kA 1 kA AvailableShortCircuitCurrent,kArms Peak Let-Through Current, kA LDC3600 KDC3400 JDC3250 FDC3225 AvailableShortCircuitCurrent,kArms Peak Let-Through I2 t, A2 sec LDC3600 KDC3400 JDC3250 FDC3225 50kA 5kA 10kA 100kA 100 kA 500 kA 1000 kA 5 kA 50 kA 10 kA 1000 kA 500 kA 100 kA 50 kA 10 kA 5 kA 10,000,000 5,000,000 1,000,000 500,000 100,000 10,0001kA avail.Ipfor1st symm.1/2cycle 1 kA 1 kA 50 EATON www.eaton.com Time Current Curves TC01200002E Effective May 2017 Series C F-Frame
  • 51. Figure 50. Series CTypes FDC, JDC, KDC and LDC ­—480 V (Curve No. AD-29-166B) Figure49. Series CTypes FDC, JDC, KDC and LDC ­—480 V (Curve No. AD-29-166B) AvailableShortCircuitCurrent,kArms Peak Let-Through Current, kA LDC3600 KDC3400 JDC3250 FDC3225 AvailableShortCircuitCurrent,kArms Peak Let-Through I2 t, A2 sec LDC3600 KDC3400 JDC3250 FDC3225 1000 kA 500 kA 100 kA 50 kA 10 kA 5 kA 1 kA 1000 kA 500 kA 100 kA 50 kA 10 kA 5 kA 1 kA avail.Ipfor1st symm.1/2cycle 50kA 5kA 10kA 100kA 1kA 10,000,000 5,000,000 1,000,000 500,000 100,000 AvailableShortCircuitCurrent,kArms Peak Let-Through Current, kA LDC3600 KDC3400 JDC3250 FDC3225 AvailableShortCircuitCurrent,kArms Peak Let-Through I2 t, A2 sec LDC3600 KDC3400 JDC3250 FDC3225 1000 kA 500 kA 100 kA 50 kA 10 kA 5 kA 1 kA 1000 kA 500 kA 100 kA 50 kA 10 kA 5 kA 1 kA avail.Ipfor1st symm.1/2cycle 50kA 5kA 10kA 100kA 1kA 10,000,000 5,000,000 1,000,000 500,000 100,000 51EATON www.eaton.com Time Current Curves TC01200002E Effective March 2018 Series C F-Frame
  • 52. Figure 52 Series CTypes FDC, JDC, KDC and LDC ­—600 V (Curve No. AD-29-166C) Figure 51. Series CTypes FDC, JDC, KDC and LDC ­—600 V (Curve No. AD-29-166C) AvailableShortCircuitCurrent,kArms Peak Let-Through Current, kA LDC3600 KDC3400 JDC3250 FDC3150 AvailableShortCircuitCurrent,kArms Peak Let-Through I2 t, A2 sec LDC3600 KDC3400 JDC3250 FDC3150 100 kA 50 kA 10 kA 5 kA 1 kA avail.Ipfor1st symm.1/2cycle 100 kA 50 kA 10 kA 5 kA 1 kA 50kA 5kA 10kA 100kA 1kA 10,000,000 5,000,000 1,000,000 500,000 100,000 AvailableShortCircuitCurrent,kArms Peak Let-Through Current, kA LDC3600 KDC3400 JDC3250 FDC3150 AvailableShortCircuitCurrent,kArms Peak Let-Through I2 t, A2 sec LDC3600 KDC3400 JDC3250 FDC3150 100 kA 50 kA 10 kA 5 kA 1 kA avail.Ipfor1st symm.1/2cycle 100 kA 50 kA 10 kA 5 kA 1 kA 50kA 5kA 10kA 100kA 1kA 10,000,000 5,000,000 1,000,000 500,000 100,000 52 EATON www.eaton.com Time Current Curves TC01200002E Effective May 2017 Series C F-Frame
  • 53. Notes: 53EATON www.eaton.com Time Current Curves TC01200002E Effective May 2017 Series C F-Frame
  • 54. Eaton 1000 Eaton Boulevard Cleveland, OH 44122 United States Eaton.com © 2018 Eaton All Rights Reserved Printed in USA Publication No. TC01200002E / TBG001366 March 2018 Eaton is a registered trademark. All other trademarks are property of their respective owners. Series C F-frame circuit breaker time current curves  Time Current Curves TC01200002E Effective March 2018