Square D PQ-4220 - 200A, 240V, 3-Phase, Fusible Bus Plug

Meet the Square D PQ-4220 Fusible Bus Plug — a robust, industrial-grade solution for fast, reliable power distribution. Engineered for demanding environments, this 200A, 240V, 3-phase fusible bus plug integrates seamlessly with busway and panelboard systems, delivering dependable protection and streamlined maintenance for commercial facilities and industrial plants alike.

Key specifications

• Brand: Square D
• Model: PQ-4220
• Type: Fusible Bus Plug
• Amperage: 200A
• Voltage: 240V
• Phase/Poles: 3-Phase
• Application: Busway and panelboard power distribution systems
• Typical uses: Industrial plants, commercial facilities, process equipment, retrofit projects

Why this bus plug stands out

Unlike generic connectors, the PQ-4220 is designed specifically for Square D systems, offering precise fit and reliable fusible protection that helps minimize downtime during routine maintenance or urgent upgrades. Its 3-phase, 240V configuration is ideal for distributing load across more efficient, balanced circuits, making it a practical choice for modernizing legacy electrical gear without overhauling your entire distribution network.

Ideal for

• Maintenance, repair, and upgrade projects where compatible, hard-to-find busplugs are required
• Retrofits in facilities transitioning to updated protection schemes
• Industrial processes and equipment that demand dependable 200A distribution
• Commercial facilities needing a resilient, ready-to-install power distribution component

Practical use cases

• Replacing aging or failed bus plugs in a production line to restore steady power without extensive rewiring
• Integrating a new process cell that requires a 200A, 3-phase feed within an existing busway route
• Stocking spare PQ-4220 units for rapid response during seasonal maintenance windows

Installation and compatibility notes

Designed for compatibility with busway and panelboard power distribution systems, the PQ-4220 should be installed by qualified electrical personnel in accordance with local codes and manufacturer guidelines. Confirm alignment with your existing Square D hardware for seamless fit and correct fusible protection. This bus plug is a practical, high-availability solution for facilities aiming to reduce downtime and simplify future upgrades.

With the Square D PQ-4220 Fusible Bus Plug, you gain a dependable, ready-to-deploy component that supports scalable, safe power distribution across demanding environments—from busy manufacturing floors to complex commercial installations.