Busway Plug In Unit Amps 100 A Voltage 277/480/600V AC Number of Poles 4 3 Phase 4 Wire with Ground Enclosure Rating NEMA 1 For Use With Square D I-Line and I-Line II Busway Fusible Yes Fuse Class H K R Breaker Type PQ Height 8 7/8 in Width 19 in Depth 4 21/32 in Standards CSA Certified UL Listed