Residual Current Device (RCD)

The item is in accordance with standards of IEC1008-1 and GB16916.1-1997, applied
to the circuit of AC 50/60Hz, 240V single phase, 415V three phases or below it,
for industrial and mining enterprise, trade building, commerce and family. It is mainly used for preventing electric fire and personal casual accident caused by personal electric shock or leakage of electrified wire net. This RCCB is a current-operated, fast leakage protector of pure electromagnetic type, which can breakoff fault circuit rapidly in order to avoid occurrence of accident. The item is precise in structure, less elements, without auxiliary power and high working reliability. The function of the switch won't be influenced by ambient temperature and lightning. The mutual inductor of the item is used to test vector differential value of passing current, and produce a relevant output power and add it to the tripper in secondary winding. If the current of vector differential value of protected circuit of personal electric shock is up to or over leakage operating current, the tripper will act and cut off so that the item will take effect of protection.