Square D HU364 - 200A, Fused Safety Switch

Engineered for reliability in demanding industrial and commercial environments, the Square D HU364 is a 200A, Fused Safety Switch that delivers safe electrical isolation with dependable performance. Designed to support proper lockout/tagout procedures, it provides a controlled, under-load disconnection that protects personnel and equipment during maintenance and outages. Built to endure harsh service conditions, this safety switch offers long-term durability you can count on.

Key benefits

• 200A amperage rating for robust isolation in main or branch circuits.
• Fused safety switch delivers reliable protection by interrupting fault currents and reducing arc risk.
• Lockout/tagout compatibility to support safe servicing and maintenance procedures.
• Safe disconnection under load minimizes equipment stress and enhances system stability during outages.
• Durable, industrial-grade construction designed for long-term reliability in challenging environments.
• Trusted Square D branding and proven performance in commercial and industrial applications.

Specifications

• Amperage Rating: 200A
• Product Type: Fused Safety Switch
• Brand: Square D
• Model: HU364

Ideal applications

The Square D HU364 is well-suited for industrial facilities and commercial spaces where safe electrical isolation is essential. Use it to provide disciplined, code-resilient power disconnects for maintenance, service outages, or process line isolation in warehouses, manufacturing plants, distribution centers, and large-scale commercial buildings. Its fused design helps protect downstream equipment and helps maintain system integrity when switching under load.

How this compares to non-fused disconnects

Fused safety switches like the HU364 offer an added layer of protection by interrupting fault currents directly within the switch assembly. This can improve fault handling, reduce arc exposure, and contribute to more predictable startup and shutdown behavior compared with non-fused disconnects—especially in environments with high inrush or fault-prone circuits.

Practical tips for installation and use

• Install in accordance with all applicable electrical codes and the manufacturer guidelines to ensure optimal safety and performance.
• Before service work, verify isolation and implement appropriate lockout/tagout procedures to protect personnel.
• Keep spare fuses on hand and replace only with the same rated components to maintain protective performance.
• Schedule regular inspection of the enclosure and connections to sustain long-term durability and reliable operation.