AC463RGI, 100 amp, 600 volt, 3 phase, 4 wire, with ground, fusible style bus plug, includes weather stripping for drip protection, type BEC / AC, UL Listed assembly, complete with UL Recognized internal switch and components, suitable for use with OEM Armor Clad industrial busway systems, accepts Class H, R and J fuse types, direct substitute, fit and function for OEM AC463RGI, AC463RGRI, AC463RGJI, AC1463RGI, AC1463RGJI