2p and 4p Aplicable to terminal and pin/fork type busbar connection Contact position indication High short-circuit current withstand capacity Provides protection against earth fault/leakage current and function of isolation Fire resistant plastic parts endures abnormal heating and strong impact Equipped with finger protected connection terminals Automatically disconnect the circuit when earth fault/leakage current occurs and exceeds the rated sensitivity. Independent of power supply and line voltage,and free frm external internal interference,voltage fuctuation.