Busway Plug In Unit, Amps 175 A, Voltage 277/480/600V AC, Number of Poles 3, 3 Phase, 4 Wire with Ground, Enclosure Rating NEMA 1, For Use With SE Square D I-Line II Busway, Fusible No, Breaker Type JD, Height 20 21/64 in, Width 8 1/2 in, Depth 8 in, Standards CSA Certified, UL Listed