Bus Plug, Amps 200 A, Voltage 480/600V AC, Number of Poles 3, 3 Phase, 4 Wire with Ground, Enclosure Rating NEMA 1, For Use With GE Spectra Series Busway, Fusible Yes, Fuse Class H, R, Breaker Type QMR, Height 18 3/4 in, Width 16 in, Depth 8 3/4 in, Standards UL Listed