Square D HU361N - 30A, 3-Pole, Fused Safety Switch

The Square D HU361N is a 30A, 3-Pole Fused Safety Switch designed to deliver reliable electrical isolation in demanding industrial and commercial environments. Built for safety and long-term durability, this unit supports robust lockout/tagout procedures and provides dependable disconnection under load, helping you protect personnel and keep equipment running smoothly.

Key features that matter in real-world use

• 30A, 3-Pole configuration supports three-phase systems, enabling efficient, orderly isolation for motorized equipment and complex machinery.
• Fused safety switch combines disconnect functionality with overcurrent protection in one compact enclosure, reducing components and simplifying maintenance.
• Lockout/tagout ready design facilitates compliant energy control procedures, enhancing workplace safety during servicing and inspections.
• Durable construction for harsh environments engineered to withstand industrial conditions, delivering dependable performance over time.
• Reliable disconnection under load designed to safely interrupt circuits when service or troubleshooting is underway, minimizing arc exposure and improving operator safety.

Ideal applications

• Three-phase motor control and equipment shutdowns in manufacturing floors, conveyors, and processing lines.
• Maintenance, repair, and alteration work where verified electrical isolation is essential.
• Service disconnects in electrical rooms and utility spaces that require compliant lockout/tagout procedures.
• Hazard energy control programs that demand a dependable, clearly identifiable disconnect point.

Why choose a fused safety switch over alternatives

The HU361N integrates overcurrent protection directly with the disconnect, providing a straightforward path to safe isolation. This fusion of fusing and disconnection reduces the need for separate protective devices, simplifies compliance with electrical safety standards, and lowers the risk of arc flash during servicing. Its 3-pole design ensures balanced protection across all phases, a critical advantage for maintaining the health of three-phase equipment.

What to know when planning installation

Consider your three-phase system’s voltage and wiring configuration to ensure seamless integration with existing panels and feeders. Plan for a clear, accessible LOTO point and keep spare fuses on hand to minimize downtime during routine maintenance. The HU361N is designed to be a durable, long-lasting safety solution that stays effective even in busy, high-demand environments.

Who benefits most

• Electrical contractors and maintenance technicians responsible for safe servicing of three-phase equipment.
• Facilities managers seeking robust, compliant energy isolation solutions for manufacturing, warehousing, and commercial facilities.
• Safety officers looking to strengthen lockout/tagout programs with a reliable, clearly identifiable disconnect.

Product spotlight: Square D HU361N is a trusted choice for professionals who value precise electrical isolation, straightforward protection, and durable performance in a single, purpose-built package.