COOPER BUSSMANN BPM500YPV Photovoltaic Repl Module, MOV, 500V MCOV. More details: Surge Protecive Device, Type 4, Location Type Type 2, Nominal Discharge Current 20kA, Max. Surge Current Per Phase 40kA, Max. Continuing Operating Voltage 440V, Length 1.77, Width 0.71, Depth 2.13, Standards IEC 61643-1, UL 1449 3rd Edition