Square D QMB323TD 100A 3P 240V Safety Switch, Fusible | AmpState

Introducing the Square D QMB323TD 100A 3P 240V Fusible Safety Switch — a purpose-built equipment disconnect and isolation solution designed for reliable point-of-use safety. This fusible switch is ideal for replacement projects and stocking spares, helping you keep your BOM aligned to the original part number so maintenance and repairs stay efficient.

• Electrical specs at a glance: 240V, 3 poles, 100A rating — built to handle medium‑duty circuits with a robust, fuse-protected disconnect.
• Fusible protection: Integrated fuse-enabled safety switch provides a clear, safe opening and reliable overcurrent protection for protected loads.
• Point-of-use isolation: Specifically designed for fast, local shutdown at the equipment disconnect location, simplifying service and reducing downtime.
• BOM-friendly replacement: Direct part-number compatibility with the original Square D QMB323TD ensures seamless documentation, spares kits, and procurement continuity.
• Ideal for stocking: A smart spare that keeps critical gear ready for immediate replacement, minimizing interruptions in production environments.

Who benefits from this safety switch? Maintenance teams, panel builders, and OEMs who need a dependable, factory-aligned disconnect for control panels, motor control centers, and industrial enclosures. It’s especially valuable when you’re upgrading, repairing, or augmenting systems that require a fusible, three-pole, 240V safety switch with a clear isolation path.

Why choose this Square D QMB323TD over generic alternatives? It’s engineered to match the exact specifications and electrical characteristics of the original equipment, preserving performance, documentation consistency, and serviceability. If you’re unsure about fit, AmpState offers support to confirm compatibility with your panel or BOM, helping you avoid costly mismatches and downtime.

Practical tips for use: install at the point of utilization where quick, safe isolation is needed during maintenance; pair with the appropriate fuse class and ratings per your protection scheme; and keep a spare on hand to ensure service continuity without extended outages.