Square D QMB324W - 200A, Fused Disconnect Switch

Engineered for industrial-grade safety and reliability, the Square D QMB324W 200A Fused Disconnect Switch delivers dependable electrical isolation in demanding commercial and industrial environments. This device combines robust construction with integrated fuse protection to help you manage faults safely while supporting essential lockout/tagout procedures for maintenance and service.

What makes the QMB324W stand out

• 200A amperage rating provides solid protection for mid-sized feeders and critical circuits, ensuring reliable disconnection when it matters most.
• Fused design adds overcurrent protection, helping to rapidly isolate faults and protect downstream equipment from damage.
• Lockout/tagout compatibility supports compliant, hands-free maintenance workflows, reducing the risk of accidental re-energization during servicing.
• Safe disconnection under load engineered to minimize arcing and provide a controlled shutdown for personnel and equipment safety.
• Long-term durability built to withstand the rigors of busy industrial environments, offering reliable performance over time.

Ideal use cases

• Machine rooms and production lines requiring a dedicated disconnect for servicing or changeovers.
• Electrical rooms and panel installations that need a secure, code-compliant isolation point.
• HVAC systems and other commercial/industrial feeders where quick, reliable interruption is essential for safety and uptime.

Why choose this fused disconnect?

Compared with non-fused disconnects, the Square D QMB324W provides integrated protection directly in the isolation path, helping protect both personnel and downstream equipment from fault conditions. Its 200A rating makes it a practical fit for a wide range of systems, while its compatibility with Square D distribution equipment simplifies installation and future compatibility across panels and feeders. With lockout/tagout readiness and durable construction, this switch is a smart, safety-focused choice for facilities prioritizing reliable isolation and maintenance safety.

Specification snapshot: 200A, Fused Disconnect Switch, Brand: Square D, Model: QMB324W.