Square D HU363 - 100A, Fused Safety Switch

The Square D HU363 is a 100A fused safety switch engineered for demanding industrial and commercial environments where safe electrical isolation is non-negotiable. This fused disconnect pairs robust overcurrent protection with a reliable isolation switch, enabling dependable disconnection under load and clean, safe maintenance workflows. Built to support proper lockout/tagout procedures, the HU363 helps protect your workforce and keep downtime to a minimum.

Why this fused safety switch stands out

• 100A rating with integrated fuse protection combines isolation and overcurrent protection in one durable device, reducing the need for separate components and simplifying panel layouts.
• LOTO-ready design supports safe maintenance practices by enabling effective lockout/tagout procedures during service and repair work.
• Dependable disconnection under load ensures equipment can be safely isolated without unexpected energization, improving worker safety during servicing.
• Rugged construction for long-term durability built to withstand the rigors of industrial and commercial settings, helping you minimize replacement cycles.
• Easy integration with existing electrical systems suitable for panel boards and motor control centers, streamlining installation and future expansions.
• Trusted brand and model) Square D HU363—a proven solution in safety and reliability for demanding applications.

Ideal use cases

• Machine enclosures on production lines where routine maintenance requires reliable isolation.
• Feeders and disconnects in commercial and light industrial electrical rooms.
• Motor control centers (MCCs) and panel boards that benefit from integrated protection and disconnect capabilities.
• Facilities seeking a straightforward, code-aligned approach to lockout/tagout procedures during servicing.

Key specifications at a glance

• Amperage rating: 100A
• Product type: Fused Safety Switch
• Brand: Square D
• Model: HU363

What problems the HU363 solves

• Eliminates guesswork during maintenance by providing a clearly defined, safe isolation point with fused protection.
• Reduces downtime and complexity by combining switching and overcurrent protection in a single device.
• Supports compliance with lockout/tagout practices, helping teams prevent accidental energization during service.

Practical tips for optimal use

• Pair the HU363 with appropriate fuses rated for your load to ensure effective short-circuit protection while maintaining safe isolation.
• Label the unit clearly and implement a standardized lockout/tagout procedure to maximize maintenance safety.
• Schedule periodic inspections of the switch contacts and fuse integrity to prevent nuisance trips and ensure consistent performance.
• When planning replacements or upgrades, verify compatibility with your existing panel boards or MCCs to streamline installation.