An MCB (miniature circuit breaker) can be reset and uses an electromagnet to open a switch if the current goes above a certain value. MCBs switch off the current faster than a fuse. An RCCB ...

Fuses protect against overcurrent events by melting their elements and opening the circuit. Fuses must be applied at or below their specified voltage rating, which differs between ac and dc ...

Save guides, add subjects and pick up where you left off with your BBC account. A fuse breaks the circuit if a fault in an appliance causes too much current to flow. This protects the wiring and ...