RDX6LE-63 Residual circuit breaker,be mainly applied to the circuit of AC50Hz(60Hz), rated working voltage 220V or 380V, rated current up to 63A to protect human against the electric leakage indirectly, and to prevent the fire result from the ground fault due to the damaged insulation of the equipment.And it also has the overload protection for the building circuit or other similar circuit. And it hase the powerful auxiliary function module, like auxiliary contact, alarm indication contact, shunt and underlvoltage release, remote release control.