Square D HU363 100A 3P 600V Safety Switch, NEMA 1, Fusible, Non-Fusible | AmpState

The Square D HU363 100A 3P 600V Safety Switch is a dependable point-of-use disconnect built to simplify equipment isolation, maintenance, and retrofit projects. Available in NEMA 1 enclosures with both fusible and non-fusible configurations, this switch offers flexible protection without sacrificing reliability or service life.

Key advantages

• Three-pole, 100 A, 600 V performance for robust, single-location isolation of demanding machines and circuits.
• NEMA 1 enclosure ideal for indoor control panels, electrical rooms, and assembly lines where cleanliness and protection from accidental contact matter.
• Fusible or non-fusible configuration lets you tailor protection to your system design and safety philosophy—keep existing hardware footprints while upgrading protection strategy.
• Part-number consistency simplifies retrofits and maintenance planning, so you can stock and replace with confidence across sites.
• Reliable Square D heritage with proven durability, straightforward wiring, and a design that supports quick service and long-term reliability.

Ideal use cases

Use the HU363 as the primary equipment disconnect at the point of use—perfect for retrofits where keeping a consistent part number matters or for planned maintenance windows where fast, safe isolation is essential. It’s well-suited for motor loads on packaging lines, conveyors, presses, and other industrial machinery where a clean, dependable shutdown is required before service or repair.

What makes this model stand out

• Dual-path protection supports both fusible and non-fusible configurations, enabling you to align electrical protection with your safety and maintenance practices without swapping hardware.
• Ease of integration with standard control wiring and mounting footprints reduces installation time and minimizes the risk of wiring errors during upgrades.
• Targeted reliability designed for consistent operation in everyday industrial environments, delivering dependable isolation when you need it most.

Specifications at a glance

• Manufacturer: Square D
• Part Number: HU363
• Product Type: Safety Switch
• Amperage: 100 A
• Poles: 3
• Voltage: 600 V
• Enclosure: NEMA 1
• Configuration: Fusible or Non-Fusible

Availability and support: AmpState offers this model and can assist with part-number compatibility checks. If you’re unsure whether HU363 fits a specific panel or application, feel free to reach out—we’re happy to help confirm fit and guide you to the right configuration for your setup.

Practical tips for installers and buyers

• Before purchase, verify your system’s interrupting capacity requirements to ensure the HU363’s protection aligns with safety standards for your equipment.
• For retrofits, ordering by part number helps preserve mounting and terminal layouts, reducing rewiring and enclosure modifications.
• Plan for lockout/tagout compatibility and confirm the enclosure space allows easy access to the switch handle during maintenance.