Elements of electrical

engineering

Prepared by :

Nikul pithva (15108010119021)

Guided by :

Ankur jha

Types of fuse

• 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. 

4Fuse

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.

5Fuse Working Principle:

• 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.

6Fuse Types:

7

Applications:Fuse

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.

Thank you