Square D PQ3603 Fusible F BUS Plug Horizontal 60A

Square D PQ-series I-Line busway fusible plug-in unit, 60 A, 600 V AC, three-pole, three-wire with ground, designed for horizontal mounting on I-Line busways. The 60 A version is cataloged as PQ3606G and provides three fusible elements for feeder protection in 600 V three-phase systems, with a ground connection integrated into the plug-in unit. This bus plug supports installation on either horizontal or vertical busways, per Schneider Electric guidance, enabling flexible layouts in commercial and light industrial distributions. For reference, the closely related 30 A variant is PQ3603G (30 A, 600 VAC, 3P, 3W + G), illustrating the family’s range and mounting versatility across the 30 A, 60 A, and 100 A sizes. The unit is purpose-built to plug into compatible Square D I-Line busway sections, delivering a compact, easily replaceable protection point for feeders and downstream equipment.