Square D QMB362TW - 60A, 600V, 3-Pole, 3-Phase, Fusible, Switch

Meet the Square D QMB362TW—a compact, maintainable fusible switch built to deliver reliable on/off isolation and overcurrent protection in demanding industrial and commercial environments. With a sturdy design and a purpose-built fuse path, this switch keeps critical equipment protected while delivering clear, decisive control for operators and maintenance teams.

Key specifications you can rely on:

• Model: QMB362TW
• Amperage: 60A
• Voltage: 600V
• Poles: 3-Pole
• Phase: 3-Phase
• Fused: Fusible

Why this fusible switch stands out

• Integrated isolation and protection: The QMB362TW combines a mechanical on/off switch with a fusible protection path, giving you immediate safeguarding for motors, drives, and circuit feeders without needing separate devices.
• 3-Pole, 3-Phase reliability: Designed to handle balanced switching across all phases, reducing imbalance risk and improving overall system protection in three-phase networks.
• 60A at up to 600V: Suitable for a range of mid-range industrial loads, from motor disconnects to feeder lines in panelboards and branch circuits, offering dependable performance under load.
• Compact, maintainable architecture: The compact footprint is ideal where space is at a premium, while the maintainable design supports straightforward service and fuse replacements to minimize downtime.
• Versatile in demanding environments: Built to endure the rigors of industrial and commercial applications, delivering consistent protection where reliability matters most.

Ideal use cases

• Motor disconnects in small to mid-size electrical drives and equipment rooms
• Feeder protection for panelboards serving machinery corridors, conveyors, or processing lines
• Branch circuit protection for critical loads where space-saving, integrated switching is advantageous

How it helps your operation

The QMB362TW isn’t just a switch—it’s a protective control point that reduces fault impact by quickly isolating circuits and providing fuse-based overcurrent protection. Its fusible design helps limit damage during overload events, while the 3-pole configuration supports safe, predictable operation across all phases. For maintenance teams, the unit’s compact, maintainable form translates to faster service, fewer interruptions, and a clearer path to restoring full operation after routine fuse replacement or inspection.

Practical tips for deployment

• Plan for up to 600V service and 60A loads when sizing upstream protection and downstream conductors.
• Use the 3-pole configuration to ensure balanced protection across all phases in three-phase systems.
• Schedule routine inspections of fuse elements and mechanical action to sustain reliable performance over time.

Specs at a glance

• Product: Square D QMB362TW
• Current rating: 60A
• Maximum voltage: 600V
• Poles: 3-Pole
• Phase: 3-Phase
• Protection: Fusible (fused switch)