Application
Residual current circuit breaker (RCCB) is applied to the circuit of AC 50/60Hz, for industrial and enterprise, building trade, commerce and family. To mainly prevent electric fire and personal casualty accident caused by personal electric shock or leakage of electric wire netting, this RCCB is a current operated, fast leakage protector of pure electromagnetic type, with can break off fault circuit rapidly in order to avoid occurrence of accident. The item

is precise in structure, less elements, without auxiliary power and high reliability. The function of the switch won't be influenced by ambient temperature and lighting. The mutual inductor of the item is used to test vector differential value of passing current, and it produces a relevant output power and add it to the tripper in secondary winding, if the current of vector differential value of prodected circuit of personal electric shock is up to or over leakage operating current, the tripper will act and cut off so as that the item will take effect of protection. It is CB approved.