Square D QMB364W - 200A, 600V, Switch

Engineered for reliability in demanding industrial and commercial settings, the Square D QMB364W is a 200A, 600V fusible switch that delivers clean, dependable on/off isolation and built-in overcurrent protection in a compact package.

Designed to streamline power control where space is at a premium, this switch is ideal for motor disconnects, panelboards, and branch circuit protection. Its compact, maintainable design makes routine servicing straightforward, reducing downtime and keeping critical equipment accessible for inspection and fuse replacement.

• High-current capability: 200A rating at up to 600V supports substantial loads without compromising protection.
• Integrated protection: Fusible switch combines isolation and overcurrent protection in a single, reliable unit.
• Compact and maintainable: Slim footprint fits tight installations, with accessible fuse access for quick maintenance and reduced maintenance windows.
• Versatile deployment: Perfect for motor disconnects, panelboards, and branch circuits in industrial and commercial environments where dependable protection is essential.

The QMB364W stands up to tough duty cycles, offering predictable performance that helps minimize nuisance trips and streamline servicing. Its robust construction makes it suitable for installation in enclosures, switchgear, and distribution panels where reliable isolation and protection matter most.

Use cases and ideal applicants

• Motor disconnects on manufacturing lines that require safe, immediate isolation during maintenance.
• Feeder protection for panelboards in electrical rooms, enabling organized, dependable power distribution.
• Branch circuit protection in warehouses, retail spaces, and other commercial facilities needing durable, space-efficient switches.

Why choose the Square D QMB364W? It consolidates essential functions into a single, compact unit, reducing wiring complexity and saving panel space while delivering reliable isolation and overcurrent protection. This makes it a practical choice for technicians, facility managers, and electrical contractors seeking a robust, maintenance-friendly solution for demanding installations.

Specifications at a glance: Model QMB364W • Amperage 200A • Voltage 600V • Type: Fusible switch for on/off isolation and overcurrent protection