Square D D323N - 100A, 240V, Disconnect Switch

The Square D D323N 100A, 240V Disconnect Switch is engineered for industrial and commercial environments where safe, reliable electrical isolation is non-negotiable. This high-performance disconnect delivers dependable disconnection under load and is built to support precise lockout/tagout procedures, helping maintenance teams work safely without compromising uptime.

• 100 A, 240 V capability — robustly designed to interrupt full-load circuits for large equipment, motors, feeders, and subpanels with confidence.
• Lockout/Tagout friendly — integrates seamlessly with standard lockout devices and tags to enforce energy isolation during service or repair work.
• Durable, industrial-grade construction — built to withstand the rigors of demanding environments and frequent operation, reducing replacement needs and downtime.
• Safe disconnection under load — engineered to ensure a clean, reliable shutdown, minimizing arcing risk and protecting personnel and circuits.
• Trusted Square D reliability — a proven choice for critical safety applications, offering consistent performance across challenging installations.

Ideal applications

• Main disconnects for large machines, conveyors, and subpanels in manufacturing and processing facilities
• Maintenance shutdowns in industrial, commercial, and HVAC systems requiring clear energy isolation
• Service isolations for electrical panels in data centers, laboratories, and repair workshops
• Industrial safety installations where rapid, reliable disconnection under load is essential

Specifications at a glance

• Brand: Square D
• Model: D323N
• Product Type: Disconnect Switch
• Amperage Rating: 100 A
• Voltage Rating: 240 V

Why this matters: with the D323N, you prioritize safety without sacrificing uptime. Its robust rating and dependable performance under load mean fewer surprises during maintenance windows, streamlined lockout/tagout compliance, and safer isolation for critical equipment. This disconnect switch is ideal for professionals who demand a reliable, long-lasting solution for high-demand electrical systems.

Practical tips for getting the most from your D323N

• Pair the switch with standard lockout devices and clearly labeled tags to ensure OSHA-compliant energy isolation during service.
• Mount in an accessible, well-lit location to facilitate quick, safe operation by authorized personnel.
• During routine checks, inspect for signs of wear, corrosion, or pitting; replace components showing damage to maintain reliability.