I Power Miniature Circuit Breaker, RPC Series
MCB is an automatic switch that opens when excessive current flows through the circuit. It can be reclosed without any manual replacement. In the case of a fuse, once it has been operated, it must be replaced or rewired, depending on the type of the MCB. Hence, fuse is known as one of the sacrificial devices. This is the main reason why MCBs are used as an alternative to the fuse in most of the circuits. Also, whenever there is a fault in the circuit, the switches in the MCB automatically shut down and the fault of the device can be easily detected.
