RDX2LE-125 series earthleakage circuit breaker, maily applied to circuit of AC 50Hz(60Hz), Rated voltage 230V(400V), rated current from 40A up to 125A for protecting human indirectly or directly, and for preventing the fire result from the ground fault due to the damaged insulation of the equipment. And it also has the overload and short-circuit protection, and for the circuit infrequent making, breaking and transfering. This production has the advantages of high breaking capacity, good accessory adaptability, small volume, light weight, beatiful outlook and easy using. This product conforms to the standard of GB16917.1.