EATON BUSSMANN NSP20M31000YPVR Surge Protection Device (SPD) Number of Poles: 3-pole IEC Level: T2 Maximum Continuous Operating Voltage (Uc): 1300Vdc Nominal Discharge Current (In): 20kA Maximum Discharge Current (Imax): 40kA Spare plug-in modules: NSP20M625MOD Datasheet File