Question

What is MCB? Why is MCB preferred to electric fuse?

Answer 1

MCB is more sensitive to current than fuse. It detects any abnormality in the current flow and automatically switches off the electrical circuit. In case of MCB, the faulty zone of electrical circuit can be easily identified. Faulty circuit trips to the off

Fuses are faster to disrupt the current flow but they must be replaced after a piece of metal melts down, whereas circuit breakers can be reset and used multiple times. The most significant distinguishing factor between fuse and circuit breaker lies in their operational mechanism.