This is a 6KA Type A RCBO. Can be wired from the bottom and top. Product Description 1: Provides protection against earth fault/leakage current and function of isolation. 2: High short-circuit current withstand capacity 3: Applicable to terminal and pin/DPN type busbar connection 4: Equipped with finger protected connection terminals 5: Fire resistant plastic parts endures abnormal heating and strong impact 6: Automatically disconnect the circuit when earth fault/leakage current occurs and exceeds the rated sensitivity. 7: Independent of power supply and line voltage, and free from external interference, voltage fluctuation. 8:Rated current can reach up to 40A