Square D PQ-3620 - 200A, 600V, 3-Pole, Fusible Bus Plug

When your electrical distribution needs reliable protection without a full panel overhaul, the Square D PQ-3620 Fusible Bus Plug delivers. Rated for 200A at 600V and configured as a 3-pole device, this bus plug is purpose-built for busway and panelboard power distribution systems in demanding industrial and commercial environments.

Why operators choose the PQ-3620

• Dedicated fusible protection: Provides a reliable protection path for feeders in busy power distribution networks, enabling fast fusing and controlled shutdowns during faults.
• Three-pole configuration: Balanced distribution across phases, simplifying fault isolation and reducing nuisance trips in complex loads.
• PQ-series compatibility: Specifically designed to work with Square D PQ busway and panelboard installations, ensuring a snug fit and dependable performance.
• Industrial-grade durability: Built to withstand the vibrations, temperature variations, and electrical demands of manufacturing floors and process equipment rooms.
• Compact sourcing for retrofits: An ideal choice for maintenance, repair, and upgrade projects where compatible, hard-to-find busplugs are required.

Use cases and practical benefits

The PQ-3620 shines in environments like:

• Retrofits: Upgrade aging distribution with a ready-to-ship fusible plug that matches your existing PQ-style assemblies, reducing downtime and scope creep.
• New installations: Provide robust protection for large feeders feeding critical equipment, motors, or process lines within a panelboard framework.
• Maintenance windows: Quick swap-in capability keeps production moving when replacing or reconfiguring protection devices.

Key specifications

• Brand: Square D
• Model: PQ-3620
• Type: Fusible Bus Plug
• Amperage: 200A
• Voltage: 600V
• Phase / Poles: 3-Pole
• Application: Busway and panelboard power distribution systems

Ideal for facilities managers, electrical contractors, and plant engineers tackling upgrades, retrofits, or urgent replacements, the Square D PQ-3620 Fusible Bus Plug is a practical, field-ready solution that keeps your distribution systems safe and available when it matters most.