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

The Square D H221NRB is a purpose-built 2-pole fused disconnect switch rated for 30 amperes at 240 volts, crafted for demanding industrial and commercial environments where reliable electrical isolation is non-negotiable. This device delivers dependable disconnection under load, helping technicians perform maintenance and servicing safely while supporting proper lockout/tagout procedures.

Why the H221NRB stands out

• 2-Pole, 30A, 240V specifications provide a clear, simultaneous disconnect for both conductors, reducing the risk of partial energization during service.
• Fused protection adds a layer of overcurrent protection in-line with equipment, helping prevent damage from faults and short circuits.
• Lockout/Tagout compatibility is built in, enabling compliant safety practices during maintenance and repair work.
• Industrial-grade durability designed to withstand the rigors of frequent operation in commercial facilities, manufacturing floors, and heavy-duty environments.

What problems it solves

When machines need routine servicing or emergency isolation, the H221NRB provides a reliable, clearly identifiable break in power that operators can depend on. Its fused design reduces arcing and improves shutdown reliability, while the two-pole configuration ensures both lines are isolated simultaneously. With lockout/tagout support, technicians can work with confidence, knowing energy sources are secured.

Ideal use cases

• Motors, conveyors, pumps, and processing equipment in manufacturing lines
• HVAC and climate-control systems in commercial facilities
• Electrical panels and control circuits where safe, verifiable shutdown is essential
• Maintenance-facing disconnects in industrial environments requiring reliable isolation under load

Installation and practical guidance

Choose the Square D H221NRB when you need a dedicated fused isolator that aligns with safety protocols and maintenance workflows. Install in appropriate enclosures designed for fused disconnect switches, ensuring compatible fuse types and ratings are used as part of the protection scheme. For best results, integrate with proper lockout/tagout procedures and keep clear labeling so personnel can quickly identify the isolated circuit during service.

Specifications at a glance

• Amperage Rating: 30A
• Voltage Rating: 240V
• Number of Poles: 2-Pole
• Product Type: Fused Disconnect Switch
• Brand: Square D
• Model: H221NRB

With the Square D H221NRB, you’re selecting a dependable, purpose-built solution for safe electrical isolation, straightforward maintenance, and long-term reliability in demanding environments. It’s more than a switch—it’s a safeguard for people and equipment alike.