Residual Current Circuit Breaker (RCCB)

The item is in accordance with standards of IEC1008-1 and GB16916.1-1997, applying
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 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 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 produces 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.