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

Meet the Square D HU363 Non-Fusible Disconnect Switch—a rugged, reliable solution designed for indoor industrial and commercial electrical isolation. With a 100A rating, 600V capacity, and a 3-pole configuration, this switch delivers a clear, dependable disconnect path for three-phase systems. Its non-fusible design means straightforward isolation when you need to service equipment, while the NEMA 1 enclosure keeps installations protected in typical indoor environments. Paired with lockout/tagout capabilities, the HU363 supports safer maintenance practices and compliant safety workflows.

Key Features and Benefits

• 100A, 600V, 3-Pole— robust three-phase isolation suitable for common industrial loads.
• Non-Fusible Disconnect— provides a straightforward disconnection path without a fuse block.
• NEMA 1 Enclosure— designed for indoor installations in control panels and switchgear.
• Lockout/Tagout Ready— enhances safety during maintenance and service procedures.
• Durable, Long-Term Performance— engineered for dependable disconnection under load over years of use.

Technical Specifications

• Amperage Rating: 100A
• Voltage Rating: 600V
• Number of Poles: 3-Pole
• Enclosure Rating: NEMA 1
• Product Type: Non-Fusible Disconnect Switch
• Brand: Square D
• Model: HU363

Ideal Applications

• Industrial power distribution panels and service entrances requiring a clear, lockable disconnect.
• Maintenance shutdowns where safe power isolation is essential to protect workers and equipment.
• Commercial facilities with three-phase equipment that demand reliable, ready-to-isolate power.

Why This Stands Out

The Square D HU363 is purpose-built for environments where quick, dependable shutoff under load matters. Its combination of a 3-pole design, 100A rating, 600V capability, and indoor-ready NEMA 1 enclosure makes it a straightforward upgrade in panels and switchgear that rely on secure, non-fusible isolation. With lockout/tagout compatibility, it aligns with safety programs that protect technicians during maintenance, inspections, and repairs.

Installation & Maintenance Tips

Install by qualified electrical personnel following local codes. Ensure the disconnect is easily accessible for emergency shutdowns and routine lockout/tagout procedures. Periodically inspect the enclosure and mechanical operation to confirm smooth actuation and reliable isolation under load.

Specifications at a Glance

Brand: Square D • Model: HU363 • Type: Non-Fusible Disconnect Switch • Poles: 3 • Amperage: 100A • Voltage: 600V • Enclosure: NEMA 1