Fuses are low resistance resistors that protect electrical circuits from overcurrent. They contain a thin fuse wire that heats up and melts if too much current flows. This interrupts the circuit to prevent damage. Fuses work by connecting in series and melting when current exceeds their rated limit, stopping current flow. Common types include electric fuses with metal strips, thermal fuses that don't automatically reset, and water fuses that detect plumbing issues. Fuses are used to provide overcurrent protection for loads or power sources in various applications.

2. Prepared by :
Nikul pithva
(15108010119021)
Guided by :
Ankur jha

4. • In electronics and electrical
engineering, a fuse is a type of low
resistance resistor that acts as
a sacrificial device to provide over
current protection, of either the
load or source circuit.
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5.  The power consumed in an electrical circuit is
reflected as the heat generated.
 Fuse is nothing but a thin wire made up usually of
lead.
 Resistance of the wire is constant. If current in the
circuit exceeds more than the rated current, then the
heat generated also exceeds and which causes the
meltdown of fuse wire.
 Fuse is connected in series in a circuit, due to the
rupturing it halts the current flow and thus
protecting the devices (connected to the voltage
source) from overcurrent damage.
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 Working Principle:

6. • Electric fuses : consists of a metal strip or wire fuse
element, of small cross-section compared to the circuit
conductors
• Thermal fuses : A thermal fuse is a cutoff which uses a
one-time fusible link. Unlike the thermal switch which
automatically resets itself when the temperature drops.
• Water fuses : A water fuse is an active component in a
household or industrial plumbing system that detects
abnormal flow or pressure drops, and stops the water
flow to ensure that water damage does not occur, in a
manner analogous to an electrical fuse.
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 Types:

7. 7
Applications:
 A fuse is a type of low resistance resistor that acts as a
sacrificial device to provide overcurrent protection, of either
the load or source circuit.
 Its essential component is a metal wire or strip that melts
when too much current flows, which interrupts the circuit in
which it is connected.
 Short circuit, overloading, mismatched loads or device
failure are the prime reasons for excessive current.
 A fuse interrupts excessive current (blows) so that further
damage by overheating or fire is prevented.
 The limitation of fuse is that you have to change it after
whenever it gets blew.