Square D HU361 - 30A, 600V, Safety Switch, NEMA 1

The Square D HU361 safety switch is built to endure the rigors of busy industrial and commercial environments, delivering dependable on/off isolation and overcurrent protection. With a 30A rating, 600V maximum, and a sturdy NEMA 1 enclosure, this device is prepared to keep critical equipment protected in indoor control panels and heavy-use locations. Designed for compact installations, the HU361 is a maintainable fusible switch that fits neatly where space is at a premium while still delivering reliable protection.

Key specifications

• Model: HU361
• Amperage: 30A
• Voltage: 600V
• NEMA Rating: NEMA 1

What makes the HU361 stand out

• Compact, space-saving design that fits neatly into crowded panels without compromising safety.
• Maintainable fusible switch construction for straightforward field service and fuse-based protection schemes.
• Rugged indoor protection (NEMA 1) suitable for motor control centers, panelboards, and branch circuit protection.
• Reliable on/off isolation ensures safe servicing, startup sequencing, and routine maintenance with minimal downtime.

Ideal use cases

• Motor disconnects in small to medium-sized industrial applications where a dedicated safety switch is required.
• Panelboard protection within compact electrical rooms or distributed control panels.
• Branch circuit protection in environments that demand a sturdy, easy-to-service safety switch.

Practical benefits and considerations

• Protection that aligns with fuse-based protection schemes, providing a clear pathway for safe commissioning and maintenance.
• Clear, straightforward operation supports quick isolation during servicing, reducing risk for technicians.
• Indoor-rated enclosure helps ensure reliable performance in typical shop floors, machine rooms, and utility spaces.

How to get the best results with the HU361

Pair the HU361 with appropriately rated fuses and wiring for your 600V circuits, follow standard electrical codes for enclosure mounting and wiring, and schedule periodic inspections to confirm clean contacts and secure connections. Ideal for teams that value dependable isolation, efficient maintenance, and a compact footprint in demanding electrical infrastructures.