Answer Posted / naveen kumar

MCB=minature circut breaker.
in case of high current(surge)trying to entering the
circuit it breakes the circut(trips).
RCCB=Resubel current circuit breaker.
in case of earthing leackage the cirucits trips. works as
MCB+earth leakage.
ELCB=Earth leackage circuit breaker.
same as MCB+earth leackage.

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