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NH and NM Range MCB's

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Wylex NH range Miniature Circuit Breakers , designed to fit all "NH" Style Consumer Units, "B" rated, with 6ka duty rating

A Miniature circuit breaker (MCB) is an automatically operated electrical switch designed to protect an electrical circuit from damage caused by overload or short circuit. Its basic function is to detect a fault condition and interrupt current flow. Unlike a fuse, which operates once and then must be replaced, a circuit breaker can be reset