The earth leakage circuit breaker (ELCB), applied in the circuit of AC 50 Hz (or 60Hz), the rated isolating voltage is 690V and the rated current is between 10A to 100A.It is used for the infrequently switching of the circuit.

The RCBO circuit breaker protects the overloading circuit and the short circuit, and prevent the circuit and the power equipment from damage. Furthermore, protecting a person when he or she gets an electric shock or a current leakage incurred, and it also avoids the fire danger caused by equipment isolating damage which generates earthing malfunction. The RCBO complies with the standard of GB 14048.2 idt IEC 60947-2, GB6829 eqv IEC60755