Question

Name the device used these days in place of electric fuses in electrical circuits.

Answer 1

Step1: Electric fuses

1. Electric fuses are made of wires with a low melting point, which melts quickly and breaks the circuit when a strong current passes through them.
2. Fuses help us to keep our electrical appliances in good working order.
3. Zinc, copper, silver, and aluminum alloys are among the materials used to make fuses.

Step2: Miniature Circuit Breaker (MCB)

1. Miniature Circuit Breaker (MCB) is the device used these days in place of electric fuses in electrical circuits.
2. It is an automatic switch that opens itself when a large current flows through the circuit.
3. It automatically returns to the normal position when the regular flow of current starts.
4. It can attain its original position without any manual replacement.
5. It is quite different from a fuse. Once a fuse has been operated, it must be replaced which is not the case with MCBs.

Thus, Miniature Circuit breakers are used these days in place of electric fuses in electrical circuits.