Square D FA-321 - 30A, 240V, Fusible Bus Plug

Meet the Square D FA-321 Fusible Bus Plug—a robust, 30A, 240V solution engineered for demanding power-distribution environments. This fusible bus plug slides into busway and panelboard systems to deliver protected, reliable feeder connections where space is tight and downtime is costly.

Key benefits

• Precise electrical protection — integrated fusible design provides overcurrent protection tailored to 30A circuits, helping prevent equipment damage and unscheduled outages.
• Direct compatibility — engineered for Square D busway and panelboard ecosystems; a plug‑in fit for projects needing compatible, hard‑to‑find busplugs.
• Compact, dependable performance — built to withstand the harsh environments common in industrial plants and retrofit sites, ensuring long-term reliability.
• Simplified maintenance and upgrades — streamlines replacements and retrofits when upgrading to fused protection without rewiring or extensive downtime.
• Versatile installation — suitable for new builds and retrofit expansions, enabling scalable power distribution with consistent protection across feeders.

Where it fits

This FA-321 is ideal for industrial plants, commercial facilities, processing equipment, and retrofit projects where specific busplugs are required to complete a protection scheme. Use during maintenance cycles to replace worn or obsolete busplugs or when upgrading to fused protection in existing circuits.

Specifications at a glance

• Brand: Square D
• Model: FA-321
• Type: Fusible Bus Plug
• Amperage: 30 A
• Voltage Rating: 240 V
• Application: Busway and panelboard power distribution systems

Practical considerations

When selecting this part, confirm your system’s busway or panelboard compatibility and fuse requirements. This bus plug isDesigned for maintenance, repair, and upgrade programs that demand a genuine, compatible unit from Square D, helping you minimize downtime and protect critical equipment in industrial and commercial settings.