These series of earth leakage circuit breakers are mainly applied to distrbution network of AC50Hz,rated voltage 380V,rated current to 630A.They can be indiredtly used for protecting person from electric shocking,or to prevent against the fire result from the ground fault due the damaged insulation of the equipment,and used to distribute electric energy and protect the circuit and power source equipment from overload,short circuit, And it also can be used for switching the circuit and starting the motor infrequently. We have very good quality assurance. Contactor:Mr.Sonic Zhao .cn