What is MCB. And it's function

Question

Accepted Answer

MCB stands for Miniature Circuit Breaker. It is an electrical switch designed to protect an electrical circuit from damage caused by overload or short circuit.

MCB is a type of circuit breaker that automatically switches off electrical circuits during abnormal conditions like overload or short circuit.
It is a small device that can be easily reset after tripping, unlike a fuse which needs to be replaced.
MCBs come in different ratings to protect circuits of varying capacities.
They are commonly used in residential and commercial electrical installations to provide protection to the wiring and electrical appliances.
Example: If there is a sudden surge in current due to a short circuit, the MCB will trip and cut off the power supply to prevent damage to the circuit.

Accepted Answer

MCB is a miniature circuit breaker. It is a automatic device. It will pull down automatically when short circuit occurs.

What is MCB. And it's function

Top Yashwanti Electricals Electrical Engineer interview questions & answers

Popular interview questions of Electrical Engineer