Square D H323DS - 100A, 240V, 3-Pole, Heavy Duty Fused Safety Switch

The Square D H323DS Heavy Duty Fused Safety Switch delivers robust, reliable electrical isolation for demanding industrial and commercial environments. Built to support proper lockout/tagout procedures, this 3-pole safety switch ensures safe, dependable disconnection under load, helping facilities protect personnel and equipment while minimizing downtime.

Why this safety switch stands out

• 100A at 240V performance—handles typical motor feeders and control circuits with ample headroom.
• 3-pole design suited for three-phase electrical systems, delivering balanced, safe isolation for multi-phase loads.
• Heavy Duty Fused construction provides integrated overcurrent protection, reducing arc risk and improving responsiveness during fault conditions.
• NEMA 3R enclosure rated for outdoor or harsh environments, delivering weather-resistant protection without compromising accessibility for servicing.
• Lockout/tagout compatible design supports standard safety protocols, enabling secure maintenance and servicing procedures.
• Durable reliability engineered for long-term service in industrial and commercial settings, keeping critical systems isolated when needed.

Ideal use cases

• Motor disconnects for pumps, fans, conveyors, and other heavy loads.
• Distribution feeders in warehouses, manufacturing floors, and outdoor equipment yards.
• Maintenance and service points where safe isolation is required without interrupting surrounding systems.

Specifications at a glance

• Amperage rating: 100A
• Voltage rating: 240V
• Number of poles: 3-Pole
• Enclosure rating: NEMA 3R
• Product type: Heavy Duty Fused Safety Switch
• Brand: Square D
• Model: H323DS

Practical guidance for installation and use

• Install by a qualified electrician to ensure proper wiring and adherence to local code requirements.
• Use compatible fuses and follow Square D replacement recommendations to maintain performance and safety margins.
• Regularly inspect the enclosure for signs of wear, moisture ingress, or corrosion and verify that the latch and seals seal properly for ongoing weather protection.
• Integrate with your lockout/tagout program to maximize personnel safety during maintenance and servicing windows.

The Square D H323DS is purpose-built for environments where reliable isolation and durable construction matter most. With its combination of 100A capacity, 240V operation, 3-pole configuration, and a weather-ready NEMA 3R enclosure, it’s a dependable choice for safeguarding critical electrical systems while supporting efficient, safe maintenance practices.