Surge Protection Device, Voltage 240V AC Delta, Phase 3, Voltage Protection Rating 1800V (L-L), 900V (L-G), Max. Continuing Operating Voltage 275/550V AC, Nominal Discharge Current 20 kA, Modes of Protection L-G, L-L, Mounting Location Internally Mounted, Filtering No, Modular Yes, Amps 75 K, Color Gray, Mounting Style DIN Rail, Enclosure NEMA Rating 1, Number of Poles 3, Basic Material Nonmetallic, Number of Wires 4 Wires, System Connection Parallel, Max. Surge Current per Phase 75 kA