Square D DU323 - 100A, 240V, 3-Pole, Non-Fusible Disconnect Switch

The Square D DU323 stands out as a high-performance solution for safe, reliable electrical isolation in demanding industrial and commercial environments. This 100A, 240V, 3-Pole Non-Fusible Disconnect Switch is built to endure long-term service while simplifying maintenance and lockout/tagout procedures, so your team can work with confidence and minimal downtime.

Key benefits that matter in the field

• Non-fusible design for straightforward maintenance — eliminates fuse elements, enabling rapid inspection, testing, and service restoration without waiting for fuse replacements.
• Three-pole configuration provides complete circuit isolation across all conductors, enhancing safety during servicing and reducing electrical risk in busy environments.
• 100A amperage rating at 240V — well-suited for typical industrial feeders and commercial distribution runs, delivering dependable disconnection when it’s needed most.
• Lockout/tagout readiness — engineered to support safe shutdown procedures, helping facilities maintain compliance and protect personnel during maintenance and repairs.
• Durable, dependable performance designed to withstand the daily demands of industrial and commercial settings, ensuring long-term reliability in challenging environments.

Ideal applications

Use the Square D DU323 to establish safe electrical isolation for equipment and circuits where reliable disconnection under load is critical. It’s a robust choice for panel boards, feeders, and service entrances in manufacturing plants, processing facilities, commercial complexes, and industrial spaces where safety and uptime are paramount.

Why this model matters

When safety, speed, and reliability intersect, the DU323 delivers. Its non-fusible design means fewer moving parts to manage, while the three-pole architecture guarantees that every phase is isolated during maintenance. Combined with strong durability and lockout/tagout compatibility, this disconnect switch helps you minimize risk and maximize uptime without compromising safety.

Practical insights and usage tips

• Plan routine lockout/tagout procedures around the DU323 to streamline maintenance windows and reduce downtime.
• Pair with compatible enclosures and control circuits that operate at 240V and up to 100A to ensure seamless integration into existing electrical distributions.
• Schedule periodic inspections of terminal connections and enclosure integrity to sustain reliable disconnection performance over time.

For facilities that demand dependable, straightforward electrical isolation with clear safety advantages, the Square D DU323 100A 240V 3-Pole Non-Fusible Disconnect Switch is a proven choice. It combines essential safety features with practical reliability, helping teams work smarter and safer on every project.