Square D H-363 - 100A, 480V, Fused Disconnect Switch

Meet the Square D H-363 — a robust 100A, 480V fused disconnect switch built for industrial and commercial environments where safety and reliability matter most. This device delivers safe electrical isolation you can count on when maintenance and servicing are on the horizon.

Designed to support proper lockout/tagout (LOTO) procedures, the H-363 provides a clear, verifiable disconnect point that helps keep personnel safe during routine servicing and troubleshooting. The fused design delivers dependable overcurrent protection, swiftly interrupting fault currents to shield wiring, motors, and control circuits while contributing to long-term system durability.

Why the Square D H-363 stands out

• 100A amperage rating suitable for a wide range of equipment and motor circuits in mid- to large-scale installations
• 480V voltage class designed to integrate with standard industrial power distribution without compromising performance
• Fused disconnect functionality provides reliable protection and clear fault isolation, simplifying maintenance decisions
• Industrial-grade reliability built to endure the demands of continuous operation in manufacturing floors, warehouses, and commercial facilities
• Lockout/tagout compatibility to support compliant safety procedures and faster, safer service work

Ideal use cases

• Isolating motors, conveyors, or process equipment during scheduled maintenance or part swaps
• Serving as a dedicated service disconnect point for HVAC units, pumps, and large electrical loads
• Integrating into control panels or equipment enclosures where a fused isolation switch is required for safety or code compliance

What you gain in practical terms

• Peace of mind knowing the circuit can be safely opened under load, with rapid fault interruption protecting the system
• Reduced downtime through a straightforward, dependable disconnect solution that technicians can trust
• Clear support for safety workflows, helping your team adhere to lockout/tagout standards and safely restore power

Specifications at a glance

• Amperage Rating: 100A
• Voltage Rating: 480V
• Product Type: Fused Disconnect Switch
• Brand: Square D
• Model: H-363

The Square D H-363 is a purpose-built solution for engineers and maintenance teams seeking a reliable, safety-forward disconnect switch that aligns with real-world industrial needs. Whether upgrading an existing line or integrating into a new installation, this fused disconnect delivers precise isolation, durable performance, and straightforward safety integration for long-term value.