Surge Protection Device, Voltage 120/240V AC, Phase Single, Voltage Protection Rating 600V (L-G, L-N, N-G), 900V (L-L), Max. Continuing Operating Voltage 150/300V AC, Nominal Discharge Current 10 kA, Modes of Protection L-G, L-L, L-N, N-G, Mounting Location Externally Mounted, Filtering No, Modular No, Color Clear, Mounting Style Surface, Enclosure NEMA Rating 4X, Number of Poles 2, Basic Material Nonmetallic, Number of Wires 2 Wires + Ground, System Connection Parallel