This document provides information on an Automatic Transfer Breaker (ATB) system, including: 1) The ATB provides stable power supply and eliminates issues of conventional automatic transfer switches through mechanical and electrical interlocking. 2) The compact and lightweight ATB has high-speed switching, excellent breaking performance, and protects power systems from faults and abnormal currents through overcurrent and ground fault detection. 3) The document describes the ATB's standards, appearance, operation, ratings, installation methods, protection devices, functions, control circuit diagram, and dimensions. It provides technical specifications for selecting and implementing an ATB system.

1. Automatic Transfer Breaker

2. Automatic Transfer Switch
Air Circuit Breaker Type
Applied Standard & code/Features/Interlock condition of switch system
Appearance and Operation Method
Standard Rating
Installation Method
Protection equipment of Trip Relay
Trip Relay Curve
Special Functions of ATB
-CTTS(Closed Transition Transfer Switch)
-ATB Transfer & Retransfer Operation with Time Delay
-Operation Method for By-Pass system Built-in ATB
-Application of Interlocking
Control Circuit Diagram
Dimension of Appearance
Contents

3. "ATB (Automatic Transfer Breaker) "
of HANCESS Co., Ltd.
ATB has been developed with mechanical and
electrical interlocking system for stable electric power
supply to the critical demands, such as hospital,
communication & broadcasting center, computer room,
power plant, main facilities for factories & buildings
and others eliminating the problems of conventional
ATS.
The compact and light weight designed ATB with high speed
switching system and excellent breaking performance
detecting over current and ground fault current protects
the electric power system from the fault and abnormal
current.

4. HANCESS ATB Automatic Transfer Breaker AC 600V / Up to 6300A
4
[MainFeatures]
• Design in according to well-known International Standard and Code
• Electric Motor Charging System
• Both sources OFF position available, Neutral Position
• Draw-out type, economical fixed type, By-pass built-in type are available
• Combined Circuit Breaker as both sources trip device(Uninterrupted By-Pass system)
• Compact & Ligh weight design, high installation efficiency inside cubicle accordingly
• Digital OCR ( Over Current Protection Relay )
- Easy sense for load capacity, over current & earth fault current and ab-normal current
- Pre-alarm function
• AC/DC combined operating voltage
• Automatic switching time setting available employing the suitable controller
Features
Applied Standard & Code
Interlock Condition of Switch System
Open
Open
* Close
* Option at CTTS Function
Close Open
Open
* Close
Close
- IEC-60947-6-1
- EN-60947-6-1
- BS 4652 part 1
- VDE 0660
- ANS 1(27.13)
- KSC 8325
- JIS 160
- GB/T 14048.11

5. HANCESS ATB
5
[AppearanceandOperationMethod]
Appearance & Operation Method
Caution)
Incaseofmanualoperation,ifonesource
putinon,theATBmustbetrippedbefore
inputtheothersourcetoavoidtheelectrical
accident&clash.
Ex) A Source --> Transfer B Source
- A(On) --> A(Off) --> B(On)
B Source --> Transfer A Source
- B(On) --> B(Off) --> A(On)
Manual Operation Method
•Wheninputchargingcompletely,thechargingdisplayshows“CHARGE”
•TheInputandtheTripbuttonisnotworkingsimultaneouslybecauseof
mechanicalinterlocksystem.
•TheconditionofmaincontactofATB,CloseorOpen,isrepresentedon
StateDisplay.
•InordertokeeptherightpositionofHandles,thebothsourcesshouldbe
chargedcompletely.
Afterinputchargingspringusinghandle,ifinputbutton(On)push,
itthrowsin.Iftripbutton(Off)push,ittrips.
Motor charging operation
•Inputspringchargeautomaticallybyelectricmotor.Aftercharging,
chargingdisplayshows“CHRAGE”
•WhenInputbuttonpush(On)manually,itthrowsinshowing
“DISCHARGE”onChargingDisplayand“Close”onStateDisplay.
•Atthistime,Inputspringchargeautomaticallybyelectricmotor.
Aftercharging,chargingdisplayshows“CHRAGE”
•WhenTripbuttonpush(Off)manually,ittripsshowing“OPEN”onState
Display.
•Atthistime,thespringchargeautomaticallybyelectricmotor.
Aftercharging,chargingdisplayshows“CHRAGE”
•TheBothsourcesarenotworkingsimultaneouslybecauseofmechanical
interlocksystem.
•WhenbothsourcesOPENposition,thebothsourcesshouldbeshutted
off.
Air Circuit Break Type Automatic Transfer Switch

6. Items ATB-06 ATB-32
630 800 1000 1250 1600 2000 2500 3200 4000 5000 6300Rated Current (A)
AC 1000VInsulation Level (V)
AC 690VRated Voltage (V)
50/60HzFrequency (Hz)
3P/4PNumber of Poles
OCR Setting Steps
Endurance
Rated Breaking Current
(KA, Sym)[lcs]
Rated Input Current
(KA, peak)[1cm]
Rated Impulse Voltage [Uimp]
Max. Electricity Breaking time
[mSec]
Making Time
[mSec]
Time of Motor Charging
[Max. Sec]
Weight (kg, 3 pole)
Fixed Type
Drawable
Type
Fixed Type
Drawable
Type
Weight (kg, 4 pole)
Dimensions (4pole)
Mechanical
Electrical
AK58AK58AK56AK56AK56AK56
AK781AK781AK341AK341AK341AK341
VK8
0504
0806
10 sec
100 105 110 120 130 140 150 160 170 200 220
110 115 120 130 140 150 160 170 180 220 240
135 142 150 162 176 190 203 216 230 270 300
150 155 162 176 190 203 216 230 243 - -
019018017036055035054W
055H
095065005D
6
[StandardRating]
ATB-08 ATB-10 ATB-12 ATB-16 ATB-20 ATB-25 ATB-40 ATB-50 ATB-63
1.0 - 0.9 - 0.8 - 0.7 -0.6 (5steps)
10,000 times
3,000 times
HANCESS ATB Automatic Transfer Breaker AC 600V / Up to 6300A

7. Fixed Type (630-6300A)
Manual Change Type
OCR / GR
ATB
Electric Powered Charge Type
Shutter
Position S/W
Arc Barrier
Digital Type
LED Type
AUX S/W (5a+5a)
Keying Circuit
Keying Inter Lock
Key Lock
Special Function of ATB
UVT / Voltage Trip Condenser Trip
Drawable Type (630-4000A)1. Mounting
Method
2. Accessoried for
Drawable Type
3. Method of Input
Operation
4. Protection Tools
5. Electrical Trip Tools
6. Accessories
7. Front Panel Accessories
Air Circuit Break Type Automatic Transfer Switch
HANCESS ATB
7
ATB-06 ATB-32ATB-08 ATB-10 ATB-12 ATB-16 ATB-20 ATB-25 ATB-40 ATB-50 ATB-63

8. [Rating][Rating]
8
[InstallationMethod]
Drawable type ATB
Fixed type ATB
Circuitbreakerisfixedindistributingboard.
Maincircuitandcontrolcircuitareisolatedanddoorof
wiringroomcanbeclosed.
ATBisdrewfromdraw-outframecompletely.
Maincircuitisisolatedandcontrolcircuitiscontacted.
Testcanbeperformedbyclosingthedoorofwiringroom.
Maincircuitandcontrolcircuitarecontacted.
Theyareusedatnormalstate.
Itiscomposedofcircuitbreakeranddraw-outframe.onlydrawofcircuitbreakerispossible.Draw-out cradleisfixedatdistributingboard.
Inthistype,therearethreepositionssuchas'Connected','Test',and'Isolated'.Itispossibletoclosepaneldooratisolatedposition.
Draw-outPositionIsolatedPosition
ConnectedPosition TestPosition
HANCESS ATB Automatic Transfer Breaker AC 600V / Up to 6300A

9. HANCESS ATB
9
[ProtectionDeviceforTripRelay]
Appearance
Setting rated current (0.7-0.8-0.9-0.95-1.0) x In Max
(0.8-0.85-0.9-0.95-1.0) x In
If setting value is exceeded, ‘LTD’ ‘LED’ turns On.
15-30-60-120-240-480 sec
(2-3-4-6-8-10) x In
If setting value is exceeded, ‘STD’ ‘LED’ turns On.
0.05-0.1-0.2-0.3-0.4-0.5 sec
(4-6-8-10-13-16) x In
If setting value is exceeded, ‘STD’ ‘LED’ turns On.
(0.7-0.8-0.9-0.95-1.0) x lc.
If setting value is exceeded, ‘PTA’ ‘LED’ turns On.
15-30-60-120-240-480 sec
(0.1-0.2-0.3-0.4-0.5-0.6) x In
If max setting value is exceeded, ‘GFT’ ‘LED’ turns On.
0.1-0.3-0.8-1.5-3.0 sec
Setting long-time delay tripping current
Setting long-time delay tripping time
Setting short-time delay tripping time
Setting instantaneous-time delay tripping current
Setting pre-alarm current
Setting pre-alarm time
Setting ground fault current
Setting ground fault time
Setting short-time delay tripping current
LCD Display : pre fault alarm setting Value 90%, over current trip indication,
ground fault trip indication, phase balance [(Im-lav)/lav]*100lav=[la+lb+lc]/3, Im=maximum
Knob Name Mode Set-up Procedure
Air Circuit Break Type Automatic Transfer Switch
ATB 2007F

10. Rated Current of CT Primary Current (I ct)
Ground Fault Setting range (GFT)
Pre - Trip Alarm range (PAT)
Long - Time Delay Setting range (LTD)
Short - Time Delay Setting range (STD)
Instantaneous - Time Delay Setting range (INST)
10
[TripRelayCurve]
HANCESS ATB Automatic Transfer Breaker AC 600V / Up to 6300A

11. CTTS (Closed Transition Transfer Switch) of ATB
Specifications
HANCESS ATB
11
[SpecialFunctionofATB]
Generally,theCircuitBreakersshouldbedesignedandinstalledatthefrontandrearofATSinordertoprotecttheelectricequipment
fromfaultcurrent,suchasgroundfault,shortcircuitandsurge.
Whenfaultandabnormalcurrentoccurs,ATBmustdesignedandproducedinordertostandatleast20timesofratedcurrentand
3cyclesbeforetrip.
Fg1)whenswitchfromNorm.sourcetoEmergencysource,
attheClosedposition,transfertoemergencesource.
(TestorElectricpowertransferring)
Fg2)whenswitchfromEmergencysourcetoNorm.source,
attheClosedposition,transfertoNorm.source.
Fg3)whenswitchfromNorm.sourcetoEmergencysource,
attheOpenposition,transfertoEmergencesource.
(Norm.sourceOff)
No. of Phase & Wires
Rated voltage
Rated frequency
Rated current
Phase angle Difference at Switch
Frequency difference at switch
Voltage at switch
instantaneous after installation related time
Note
Afterinstallationandwiringconnectioncompletely,thebothsources’phaseordermustbeconfirmedandtheovercurrent
mustbeconsideredduetothephaseangledifferenceandvoltagedifferencewhichiscauseofovercurrent.
Single Phase, Single Phase three wires, 3Phase three-wires / four wires
110V / 220V / 380V / 440V / 480V
50Hz / 60Hz
630A - 6300A
Within 10 Phase Degree
within 0.2Hz
Voltage difference is within 5% with normal source
within 50mSec
Fg4)whenswitchfromEmergencysourcetoNorm.source,
attheClosedposition,transfertoNorm.source.
(TransferringtoNorm.sourcewithoutanyInterrupt)
Item Specifications
Air Circuit Break Type Automatic Transfer Switch
[ Note : If Permitted by the Utility Company ]

12. Operation Method for By-Pass System Built-in ATB
ATB Transfer & Retransfer Operation with Time Delay
12
[SpecialFunctionofATB]
LOADisaccessedtoASourceand
operatedbyATB.
InputByPassATBtothesame
powersource(ASource)ofATB.
(Itissafebecausemechanical
andelectricalinterlockisbuilt-in.)
1.TransferATBtooperationposition
(Sameasdrawmotion)
2.Whentransferfromtestpositionto
operationposition.
3.ATBandByPassATB shouldbe
interlocked
Normal operation
1)
2)
3)
A,BSourceMaincircuitisaccessed
andloadsideisisolated.
Thereforeelectricaloperation
testissafety.
Draw of ATB (Test position)
Undraw of ATB
DrawoutMainATB.
Allmaincircuitsareisolated.
Inspect DrewoutATBaftertransfer
ByPassATB.
Draw of ATB
(isolated, drawable position)
ATB check & Test
IncaseofATBtestoruninterruptedfacilities(Broadcastingstation,hospital,computerroom,powerplantandothers). ByPassIsolationswitchhasallcharacteristicsthat
ATBhastopreventpowerfailureofloadingsidethatisoccurredincaseoftestormaintenanceofgeneralATSaddoneByPassIsolationSwitchtoATSandoperateitasfollowing
figure.Itistheswitchthattestorrepaircanbeperformedwithoutdifficultiestoloadingside.
ATB
ATB
ATB
ATB
ATB
ATB
HANCESS ATB Automatic Transfer Breaker AC 600V / Up to 6300A
LOADisaccessedtoBSourceand
operatedbyATB.
By-pass Isolation Switch
function of ATB

13. Applications of Interlocking
HANCESS ATB
13
ATB 1 + ACB 1
ATB 2 SetACB 5 Set
Air Circuit Break Type Automatic Transfer Switch
ACB1 ACB2 ACB3
ACB 3 Set
ACB1 ACB2
ACB3
ACB4 ACB5
ACB
ACB 2 Set
ACB1 ACB2
ATB 1 Set
ATB
ATB ATB
ATB

14. 14
[ControlCircuitDiagram]
HANCESS ATB Automatic Transfer Breaker AC 600V / Up to 6300A
01.PP,PN:OCRCONTROLSOURCEDC110V
02.M+,M-:MOTORSOURCEDC110V
03.APC1,APC2:“A”SIDECLOSING
04.APT,ANT:“A”SIDETRIP
05.BPC1,BPC2:“B”SIDECLOSING
06.BPT,BNT:“B”SIDETRIP
07.A11~A22:“A”SIDEAUXILIARYCONTACTOR
08.B11~B22:“B”SIDEAUXILIARYCONTACTOR
09.A/L:PRETRIPALARM
10.51:OVERCURRENTFAULT
11.51G:GROUNDOVERCURRENTFAULT
12.COM:UVRCOM
13.AUVR,BUVR:UNDERVOLTAGEFAULT
14.C1,C2:OCRTRIP
NOTE
DC 110V OCR CONTROL
A Side Closing Coil
B Side Closing Coil
A Side Trip Coil
B Side Trip Coil
ACC
BCC
ATC
BTC

15. Air Circuit Break Type Automatic Transfer Switch
Auto Transfer Breaker
"A"SOURCE
"A" OFF
MANU.
LCD-H3
AUTO "A" POWER
"A" ON
"A" TIMER
ON
CONTROLLER
"B" POWER"B" TIMER
"B" ON
ON
"B" OFF
"B"SOURCE
MANUAL
AUTO
15

16. (Unit:mm)
FixedType/630-4000A3P
Front View Side View Rear View
130 270
75
t
500
100
Fixed Hole
D
15 15
550
610
60
60
C
A B
15 15
Fixed
Hole
12
JKLM
E F G H
A
LOAD
B
Type A B C D E F
Type G H J K L M
ATB - 16
ATB - 20
ATB - 25
ATB - 32
ATB - 40
ATB - 16
ATB - 20
ATB - 25
ATB - 32
ATB - 40
16
[Dimension]
225
225
225
225
225
225
225
225
225
305
450
450
450
450
530
70
70
70
90
90
125
105
105
95
105
100
120
120
130
160
100
120
120
130
160
125
105
105
95
105
162.5
162.5
162.5
162.5
159.5
120
120
120
120
123.5
120
120
120
120
123.5
134.8
134.8
132.5
132.5
132.5
(630-1200 :12t / 1600-2000 :15t / 2500-3000 :20t / 3200-6300 :25t)
HANCESS ATB Automatic Transfer Breaker AC 600V / Up to 6300A

17. (Unit:mm)
(630-1200 :12t / 1600-2000 :15t / 2500-3000 :20t / 3200-6300 :25t)
FixedType/630-4000A4P
15 15
550
C
A B
15 15
Fixed
Hole
12
130 270
75
t
500
100
Fixed Hole
D
Type A B C D E F
Type G,H J K L M N
ATB - 16
ATB - 20
ATB - 25
ATB - 32
ATB - 40
ATB - 16
ATB - 20
ATB - 25
ATB - 32
ATB - 40
JKLM
E F G H N
N T S R
A
LOAD
B
Front View Side View Rear View
HANCESS ATB
17
225
225
225
225
304
225
305
305
325
385
450
530
530
550
689
70
70
70
70
90
75
85
80
80
104
100
120
120
130
160
100
120
120
130
160
162.5
162.5
162.5
159.5
159.5
120
120
120
120
123.5
134.8
134.8
132.5
132.5
132.8
120
120
120
120
123.5
75
85
85
85
104
Air Circuit Break Type Automatic Transfer Switch

18. FixedType/630-4000A3P
3P Rear View
JKLM
E F G GF F E
A
LOAD
B
4P Rear View
JKLM
E N G GF GF F E
A
LOAD
B
C
C
A B
1515
550
15 15
Fixed
Hole
12
Front View
130 270
75
t
500
100
Fixed Hole
D
Side View
5000A BUS BAR
23 23
35 35
35
6300A BUS BAR
15 15
30 30
30 30
30 30
70
Type G J K L M N
ATB - 50 3P
ATB - 63 3P
ATB - 50 4P
ATB - 63 4P
Type A B C D E F
ATB - 50 3P
ATB - 63 3P
ATB - 50 4P
ATB - 63 4P
18
[Dimension]
(Unit:mm)
(630-1200 :12t / 1600-2000 :15t / 2500-3000 :20t / 3200-6300 :25t)
30
40
30
40
162.5
159
162.5
159
123.5
123.5
123.5
123.5
123.5
123.5
123.5
123.5
132.5
132.5
132.5
132.5
150
-
150
150
315
465
387
545
315
525
387
625
630
990
774
1170
90
90
90
90
60
95
42
105
150
280
150
280
HANCESS ATB Automatic Transfer Breaker AC 600V / Up to 6300A

19. DrawableType/1600-4000A
HANCESS ATB
19
Bottom View
650 D
190120120
E
Side View
C
A B
610
610
60
60
Front View
<ATB-06~16> <ATB-20,25,32>
<ATB-40> <ATB-50>
30
30
20
20
55
120
35
20
150
25
20
80
Type
ATB - 06 ~ 16
ATB - 20
ATB - 25
ATB - 32
ATB - 40
A B C D E
A
B
650
4- 13
ATB
No. of Pole
3P
4P
3P
4P
3P
3P
4P
4P
Rated Current A B
Size
600 - 1600A 290 427
290 427
370 427
290 444
390 444
370
470 444
444
2000A
2500A
3200A
4000A
4000A
268
268
268
268
348
268
348
348
370
428
536
616
616
638
776
70
70
70
70
70
12 / 15
15
20
20
20
(Unit:mm)
Air Circuit Break Type Automatic Transfer Switch
(630-1200 :12t / 1600-2000 :15t / 2500-3000 :20t / 3200-6300 :25t)

20. Head Office
144, Achasan-ro, Seongdong-gu, Seoul, Korea
TEL : 82 - 2 - 462 - 3731 ~ 3
FAX : 82 - 2 - 463 - 8350
Plant
48, Daram-ro 57beon-gil, Docheock-Myeon, Gwangju-si,
Gyeonggi-Do, Korea
TEL : 82 - 31 - 762 - 7500
FAX : 82 - 31 - 764 - 0302
Agent
note) The specifications are subject to change without notice in order to improve the performance and quality.
WWW.HANCESS.COM
Transter & Bypass Status
Normal Source Emergency Source
Source
Available
Main MainByPass ByPass
LOAD
Lamp Test
Hanpro3000
ATBCTTS&ByPassControllerBasedonDSP
Vietnam Represented Office:
Hancess Vietnam - Quanpham Co.,ltd
285 Dien Bien Phu, Ward 07 -district 03,
Ho Chi Minh City - Vietnam
Tel: +84 39304952 - 39302400
Fax: +84 39304953
E-mail: info@quanpham.vn
Website: www.quanpham.vn