Square D DU323 - 100A, General-Duty, Safety Switch

Meet the Square D DU323 — a 100A general-duty safety switch designed to deliver reliable on/off isolation and precise overcurrent protection in demanding industrial and commercial environments. This compact, maintainable fusible switch is built to keep critical equipment safe, accessible, and easy to service.

• 100A general-duty rating provides dependable motor disconnect and branch circuit protection where robust isolation is essential.
• Maintainer-friendly fusible switch design enables straightforward fuse replacement and routine servicing, minimizing downtime.
• Compact footprint fits neatly into tight electrical rooms, panelboards, and switchgear enclosures without sacrificing performance.
• Rugged construction for tough environments engineered to withstand dust, vibration, and temperature variations common in industrial settings.
• Versatile installer-friendly application ideal for motor disconnects, panelboards, and branch circuit protection, providing a single, reliable isolation point.

Why it matters in real-world setups:

• Isolate power safely during maintenance to protect personnel and equipment, with a clear, accessible isolation point for peace of mind and faster restoration.
• Consolidate protection and isolation in one durable device, reducing the need for multiple components and simplifying wiring strategies.
• Support a wide range of loads and configurations in both new builds and upgrades, delivering consistent performance across the electrical system.

Who benefits the most:

• Facility engineers managing manufacturing floors, warehouses, and heavy commercial spaces with substantial electrical demand.
• Electrical contractors installing or upgrading motor control circuits, panelboards, or branch protection schemes in retrofit projects.

Technical snapshot:

• Model: DU323
• Amperage: 100 A
• Duty: General

Practical considerations and best practices:

• Plan fuse compatibility with your circuit loads to ensure reliable protection without nuisance trips.
• Configure mounting and wiring for easy access and maintenance, preserving clearances around the switch for safe operation.

Upgrade your electrical protection with the Square D DU323 — a dependable, space-efficient solution for motor disconnects, panelboards, and branch circuit protection that keeps equipment and personnel safe while streamlining installation and service.