Question

what are mcbs? and what is it use for

Answer 1

An MCB or miniature circuit breaker is an electromagnetic device that embodies complete enclosure in a molded insulating material. The main function of an MCB is to switch the circuit, i.e., to open the circuit (which has been connected to it) automatically when the current passing through it (MCB) exceeds the value for which it is set. It can be manually switched ON and OFF as similar to Normal switch off if necessary.

Answer 2

mcbs are miniature circuit breaker if there is overflow of electricity it will switch off the electricity of the house automatically(trip).