Square D HU364 200A 3P 600V Safety Switch, NEMA 1, Fusible, Non-Fusible | AmpState

The Square D HU364 Safety Switch is designed to provide clean, reliable equipment disconnect and isolation right at the point of use. With a 200 A, 3-pole configuration and a 600 V rating in a NEMA 1 enclosure, it’s built to handle demanding indoor environments where safe power shutdown is essential for maintenance, servicing, and retrofits.

• 200 A, 3-pole, 600 V capacity ready to handle demanding motors and line loads without compromising safety.
• NEMA 1 enclosure protects the disconnect from dust and incidental debris in indoor industrial settings.
• Fusible or Non-Fusible configurations offer flexible operation in a single safe-disconnect unit, reducing inventory while preserving the same form factor.
• Point-of-use disconnect enables quick isolation of equipment for maintenance, testing, and troubleshooting, minimizing downtime.
• Consistent part number for retrofit supports seamless replacements and long-term maintenance planning without wiring guesswork.
• Backed by Square D reliability with AmpState availability and support to help verify fit and compatibility.

Why this safety switch matters in your operation

When coordinating machine downtime, safety, compliance, and efficiency are paramount. The HU364 is purpose-built to act as a dependable disconnect that ejects power cleanly and safely, reducing lockout/tagout complexity and improving repair turnaround times. Its robust construction means fewer nuisance trips and easier maintenance scheduling—critical for aging equipment, retrofits, or new installations where a proven part number matters.

Ideal use cases

• Industrial motors, conveyors, pumps, and processing equipment requiring a reliable isolation point.
• Retrofit projects where maintaining the existing part number minimizes wiring changes and documentation updates.
• Maintenance planning in facilities that need a clear, compliant disconnect at the machine level.
• Indoor electrical enclosures in manufacturing floors, warehouses, or processing lines where NEMA 1 protection is sufficient.

How HU364 compares and what to expect

Compared to generic safety switches, the HU364 delivers a clear advantage for facilities that value a single, adaptable solution. The ability to configure as either fusible or non-fusible within the same model simplifies spares management and reduces the need for multiple SKUs. This makes budgeting simpler and ensures technicians have the right device on hand for quick swaps during maintenance or upgrades.

Practical tips for installation and care

• Engage a qualified electrician to perform installation and lockout/tagout procedures in accordance with local codes and safety standards.
• Keep an organized spare fuse inventory near the switch to shorten downtime during fuse changes (if configured fusible).
• Document the exact configuration (fusible vs. non-fusible) and ensure labeling reflects the current setup to avoid confusion during future maintenance.
• Periodically inspect the enclosure for signs of wear, and verify terminal torque and labeling during routine service checks.

If you’re unsure about fit or compatibility, AmpState is ready to help. Reach out to verify the HU364’s compatibility with your control scheme and existing equipment, and we’ll confirm the best configuration for your application.