What is the function of RCCB? What are the different
sensitivity ratings & each application?

Answer Posted / jasmin

RCCB means residual current circuit breaker. This is used 
to trip the circuit in case of earth faults to prevent 
electrical shocks.Different sensitivity ratings are 
30ma,100 ma, 300 ma.These are used for Domestic, commercial 
and Industrial electric loads respectively. 

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