Square D H361NRB - 30A, 600V, 3-Pole, Fused Disconnect Switch

The Square D H361NRB is a rugged 3-pole fused disconnect switch engineered for industrial and commercial environments where safe electrical isolation and reliable performance are non-negotiable. With a 30A rating and 600V capacity, this switch provides a dependable disconnect under load, making maintenance safer and downtime less disruptive. Its fuse-based protection simplifies fault handling and supports effective lockout/tagout procedures to protect personnel and downstream equipment.

Why the H361NRB stands out

• Three-pole design for robust three-phase isolation. Delivers clean, reliable disconnection across all phases, essential for motors, pumps, conveyors, and complex systems.
• 30A, 600V capability. Suitable for a wide range of commercial and light-industrial applications, balancing protection with usability for everyday operations.
• Fused protection. Integrates fuse-based isolation to guard downstream equipment against overloads and to simplify maintenance shutdowns.
• Lockout/Tagout readiness. Built to support safe maintenance practices, ensuring the circuit remains de-energized during service.
• Durable, task-focused design. Built to perform reliably in challenging environments, delivering long-term service with minimal downtime.

Ideal applications and use cases

• Industrial machinery and equipment control panels where reliable isolation is critical for safety during servicing.
• Commercial HVAC, pumps, and conveyor systems that require a clear, certified disconnect under load.
• Service feeders and distribution circuits in manufacturing floors, warehouses, and processing facilities.
• Maintenance shutdowns and routine lockout/tagout workflows that demand predictable, quick de-energization.

Specifications at a glance

• Amperage Rating: 30A
• Voltage Rating: 600V
• Number of Poles: 3-Pole
• Product Type: Fused Disconnect Switch
• Brand: Square D
• Model: H361NRB

Practical tips for best results

• Pair the H361NRB with properly rated fuses tailored to your load to ensure coordinated protection and safe shutdowns.
• Train maintenance personnel on lockout/tagout procedures and ensure tags clearly indicate the circuit status and contact points.
• Regularly inspect the switch during maintenance cycles; check for signs of wear, ensure fuses are accessible, and verify the disconnect engages fully under load.
• Document the installation in line with safety programs to support compliance with internal safety standards and regulatory guidelines.