Square D QMB-322-T - 60A, 240V, 3-Pole, Fusible, Switch

Square D QMB-322-T is a compact, rugged 60A, 240V, 3-Pole Fusible Switch engineered for dependable on/off isolation and reliable overcurrent protection in challenging industrial and commercial environments. Designed to handle demanding duty cycles, this switch delivers solid performance where motor disconnects, panelboards, and branch circuits need a protected, easy-to-maintain solution.

Key benefits

• Three-pole configuration for balanced three-phase switching ensures consistent protection and coordinated control across all phases.
• Fusible protection provides rapid, selective fault interruption to safeguard downstream equipment and wiring.
• 60A, 240V rating aligns with medium-range motor loads and common commercial applications, offering a practical balance of capability and footprint.
• Compact, maintainable design fits into tight electrical rooms and panelboards, with straightforward accessibility for fuse changes and routine servicing.
• Versatile for multiple configurations ideal as a motor disconnect, a branch-circuit protection device, or a reliable isolation switch in control panels.

Ideal applications

• Motor disconnects in manufacturing lines, conveyors, and HVAC systems
• Panelboards requiring a protected, easily serviceable disconnect point
• Branch circuit protection where space is at a premium and quick isolation is needed

Why this makes sense for your operation

When uptime matters, the QMB-322-T offers a straightforward path to safe, controlled shutdowns and protective coordination with upstream breakers and feeders. The fused design minimizes arc exposure during maintenance, helps prevent equipment damage from overcurrent events, and simplifies compliance with electrical safety practices in both new installations and upgrades.

Installation and maintenance considerations

• Ensure compatible fuse elements and follow manufacturer installation instructions for mounting and wiring.
• Regularly inspect fuse assemblies for signs of wear or degradation and replace only with the correct fuse type and rating.
• Use as part of a well-organized protection scheme in accordance with local electrical codes and standards.

For environments that demand dependable isolation, protected switching, and straightforward maintenance, the Square D QMB-322-T delivers a practical, space-efficient solution without compromising on safety or performance.