A fuse breaks the circuit during the short circuit condition or overload condition. Explain
A fuse is a small conducting wire of low melting point which protects the household electrical system from getting damaged due to unusual high current.
The unusual high current may be due to short circuit, overload or other power fluctuation in the electric line etc. The fuse wire is made of conducting alloy or metals of low melting point. Thin wires of metals such as: tin, aluminium, copper and thin wires of alloys of bronze, brass, nichrome are used as fuse.
It is rated according to the desired current required by an appliance. If the current is more than the rated value, the fuse wire heats up and melts to stop the flow of current.