Square D PQ4603G - 30A, 277/480V, 3-Phase, Bus Plug

Introducing the Square D PQ4603G Bus Plug — a rugged, plug-in power distribution module engineered for the most demanding industrial and commercial environments. Rated at 30A and sized for 277/480V, 3-phase service, this bus plug delivers a dependable power path to busway and panelboard systems, enabling fast, secure connections where uptime matters most. Built for retrofit projects, maintenance, and upgrades, the PQ4603G is the practical choice when compatible, hard-to-find busplugs are required.

• 30A current rating: supplies reliable feeder power without overloading circuits in everyday distribution scenarios.
• 277/480V, 3-Phase configuration: supports common medium-voltage loads found in commercial and industrial settings, such as motors and process equipment.
• Plug-in versatility: designed for seamless integration with Square D busway and panelboard systems, enabling quick swaps and minimizing downtime.
• Rugged, field-ready construction: built to withstand the bumps and vibrations of busy industrial spaces while maintaining secure electrical connections.
• Hard-to-find and replacement-ready: an ideal solution for maintenance, repair, and upgrade projects where standard parts aren’t available or suitable.

Why choose the PQ4603G for your electrical distribution needs? This bus plug keeps critical power paths intact during servicing, reducing outage time and helping facilities stay productive. It’s specifically positioned for users who operate Square D busway and panelboard infrastructures, delivering a precise fit and dependable performance within established electrical layouts. By choosing a purpose-built bus plug like the PQ4603G, you align with a proven ecosystem designed for longevity and serviceability in demanding environments.

Ideal use cases

• Industrial plants requiring reliable 277/480V 3-phase distribution for motors, conveyors, and process equipment.
• Commercial facilities undergoing upgrade projects where existing Square D busway or panelboard configurations are still in service.
• Maintenance services and retrofit initiatives that need compatible, readily installed bus plugs to minimize downtime.
• Spare-part inventories for facilities that prioritize exact-match components to ensure quick, safe replacements.

Specifications at a glance

• Brand: Square D
• Model: PQ4603G
• Type: Bus Plug
• Amperage: 30A
• Voltage Rating: 277/480V
• Phase / Poles: 3-Phase
• Application: Busway and panelboard power distribution systems