Square D H221NRB - 30A, 240V, 2-Pole, Fused Disconnect Switch

The Square D H221NRB is a purpose-built safety isolator designed for demanding industrial and commercial environments where dependable electrical isolation matters. This 30A, 240V two-pole fused disconnect switch delivers reliable disconnection under load, giving maintenance teams the confidence they need to service equipment safely and efficiently.

Why the H221NRB stands out

• Two-pole protection disconnects both hot legs, ensuring complete circuit isolation for safer maintenance and safer lockout/tagout procedures.
• Fused protection interrupts fault currents to shield downstream equipment and wiring from overloads, helping to prevent damage and downtime.
• 30A, 240V rating aligns with a wide range of motors, drives, and feeders typically found in industrial and commercial settings.
• Lockout/Tagout readiness designed to integrate smoothly with standard safety practices, supporting compliant and traceable servicing windows.
• Durability for daily use built to endure the rigors of busy facilities, delivering long-term reliability and predictable performance.

Ideal use cases

• Motor control and equipment disconnects in manufacturing lines, conveyors, fans, and processing equipment
• Primary service disconnects in commercial electrical rooms and mechanical spaces
• Maintenance and troubleshooting workflows where clear, safe isolation is essential

Practical advantages you’ll notice

• A clear, reliable isolation point that supports proactive maintenance without guesswork
• A compact, straightforward solution that integrates into standard electrical distributions while prioritizing safety
• A component you can trust to perform consistently, reducing риск of unexpected outages during critical operations

Quick specs at a glance

• Amperage rating: 30A
• Voltage rating: 240V
• Number of poles: 2-Pole
• Product type: Fused Disconnect Switch
• Brand: Square D
• Model: H221NRB

Tips for optimal use

• Pair this disconnect with correctly rated fuses and compatible protective devices as part of a complete electrical protection strategy.
• Install in enclosures or panels where a dedicated, accessible isolation point is required for safer maintenance and service.
• Follow your facility’s lockout/tagout policies to ensure proper tagging and secure isolation during every service window.