Square D QMB326MW - 600A, 240V, Fusible, Switch

Meet the Square D QMB326MW — a robust 600A, 240V fusible switch built for dependable on/off isolation and precise overcurrent protection in demanding industrial and commercial environments. This compact, maintainable switch delivers a focused solution for motor disconnects, panelboards, and branch circuit protection where space is at a premium without sacrificing performance.

• Model: QMB326MW
• Amperage: 600A
• Voltage: 240V
• Protection: Fusible design for reliable overcurrent protection
• Purpose: Ideal for motor disconnects, panelboards, and branch circuits
• Design: Compact and maintainable to fit tight electrical rooms and enclosures

Why this matters

When you need a dedicated isolation point that also guards critical feeders, the QMB326MW provides a clear, safe disconnect path coupled with fuse-based protection. Its rugged construction (designed for industrial and commercial use) stands up to challenging environments, reducing downtime and simplifying maintenance tasks. The fusible configuration means protection is built into the switch assembly, helping to prevent damage from overcurrents before they reach downstream equipment.

Ideal applications and use cases

• Motor disconnects on production lines where quick isolation is crucial for maintenance safety
• Protection for feeders feeding panelboards and other central electrical distributions
• Branch circuit protection in spaces where a compact, easy-to-service fusible switch is preferred

Practical guidance and considerations

For best results, install and service the QMB326MW by qualified electrical personnel. Plan fuse compatibility and replacement procedures to ensure coordinated protection across your system, and keep the switch accessible for safe operation and inspection. When you need a dedicated, space-conscious disconnect with built-in overcurrent protection, this Square D solution offers a clear, reliable path to safe, controlled power isolation.