This fusible bus plug is designed for use with Square D I-Line and I-Line II busways. Its enclosure design helps to keep personnel safe from hazardous components while also preventing the ingress of solid foreign objects such as falling dirt. This listing is for each. Product Specification Application 100 A Brand Square D Catalog Description Square D, Busway FS Plug-In 100A, 240 V AC, 3-Phase, 4-Wire, Busway Fusible Plug-In Unit, I-Line II Height 9.8000 Height Unit IN Item Status A Length 20.7000 Length UOM IN Mfr. # PQ3210G NEMA Rating 240 V AC Number of Wires 4 Phase 3 Standard CSA-UL Sub-Brand I-LINE II Type H, SECTION Width 11.2000 Width UOM IN