Square D HU363 - 100A, 600V, 3-Pole, Disconnect Switch

The Square D HU363 is a rugged, high-performance disconnect switch engineered for dependable electrical isolation in demanding industrial and commercial spaces. With a 100A rating and a 600V maximum, it provides a safe, clear disconnection under load while integrating seamlessly with lockout/tagout safety programs to protect personnel during maintenance and servicing.

Key features

• Amperage rating: 100A
• Voltage rating: 600V
• Poles: 3-Pole design for full-line isolation
• Enclosure: NEMA 1, suitable for indoor environments
• Type: Disconnect switch
• Brand: Square D
• Model: HU363

Why this disconnect switch stands out

• Engineered to interrupt power decisively, helping prevent arcing and ensuring equipment and personnel safety during maintenance.
• Enhanced safety with lockout/tagout (LOTO) compatibility: Integrates with standard LOTO procedures to control energía sources and protect workers during servicing.
• Durable indoor enclosure (NEMA 1): Built to withstand daily industrial or commercial use inside electrical rooms, closets, or equipment cabinets.
• Three-pole configuration for comprehensive control: Ensures all conductors are simultaneously isolated, reducing the risk of partial energization.
• Solid, repeatable performance: Designed for long-term durability in environments where consistent disconnection is critical.

Ideal use scenarios

• Main power isolation for industrial control panels and service entrances
• Motor feeders and equipment disconnects in manufacturing lines
• HVAC systems and large commercial machinery where safe de-energization is essential
• Maintenance bays and electrical rooms requiring clear, immediate power isolation

Practical guidance to maximize value

When integrating the HU363, plan for routine lockout/tagout procedures to ensure a consistent safety workflow. Pair this disconnect switch with compatible enclosures and wiring practices that meet your facility’s electrical codes and standards. Regular inspection of the switch contacts and mounting hardware will help maintain reliable performance and extend service life in busy environments.