Westinghouse HF364 - 200A, 600V, 3-Pole, 3-Phase, Disconnect Switch, NEMA 1

The Westinghouse HF364 is a rugged, dependable disconnect switch built to deliver reliable on/off isolation and robust overcurrent protection in demanding industrial and commercial settings. With a 200A rating, a 600V operating voltage, and 3-pole, 3-phase configuration, this NEMA 1 unit is engineered to keep your equipment safe, accessible, and ready for service in minutes.

What makes the HF364 stand out

Compact, maintainable fusible switch—the HF364 combines a streamlined footprint with straightforward serviceability, making routine maintenance and fuse changes quick and uncomplicated. Its indoor-rated NEMA 1 enclosure provides solid protection for electrical components in clean, controlled environments, helping reduce the risk of dust ingress and incidental contact.

Key specifications at a glance

• Model: HF364
• Amperage: 200A
• Voltage: 600V
• Poles: 3-Pole
• Phase: 3-Phase
• NEMA Rating: NEMA 1

Why this matters for your facility

When you need a reliable point of isolation for motors, panelboards, or branch circuits, the HF364 provides a dedicated space to disconnect power quickly and safely. The three-pole design ensures that all live conductors are isolated simultaneously, minimizing the risk of arc flash or residual energization during maintenance. For facilities that prioritize uptime and clear, accessible protection, the HF364 offers a straightforward, certifiably robust solution.

Ideal use cases

• Motor disconnects: Safely isolate pumps, fans, conveyors, and other motor-driven equipment for service or preventative maintenance.
• Panelboard protection: Integrate into electrical distribution setups where centralized control and rapid de-energization are essential.
• Branch circuit protection: Serve as a reliable disconnect point for feeders in enclosures and electrical rooms, helping to localize fault isolation.

Who benefits most

This disconnect switch is a practical choice for electrical contractors, facilities managers, and maintenance electricians working in commercial buildings, manufacturing spaces, and industrial environments where durable, easy-to-maintain protection equipment is required. It’s particularly well-suited for teams prioritizing clear, local control of power to critical loads without sacrificing safety or accessibility.

Practical considerations and tips

• Pair the HF364 with appropriate overcurrent protection and installation hardware rated for 200A and 600V service to ensure optimal protection and performance.
• Plan for routine inspection and fuse replacement as part of your preventive maintenance program to preserve reliable operation and extend service life.
• Use in indoor environments where a compact, maintainable switch is advantageous, taking advantage of the NEMA 1 enclosure’s protection level.
• Verify wiring configurations and clear labeling to support quick, safe operation during maintenance or testing scenarios.

Why choose Westinghouse HF364?

Designed with real-world protection needs in mind, the HF364 offers a practical balance of protection, accessibility, and durability. It reduces downtime risk by enabling fast isolation of critical circuits, supports safer maintenance practices, and provides a dependable, space-conscious solution for motor control and branch protection in a variety of indoor settings. If you’re seeking a reliable, purpose-built fusible disconnect switch that fits compact installations without compromising on safety or performance, the Westinghouse HF364 is engineered to deliver.