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

The Square D H221NRB is a rugged, 2-pole fused disconnect switch engineered for reliable electrical isolation in demanding industrial and commercial environments. With a 30A, 240V rating, it delivers dependable disconnection under load while integrating seamlessly into safety-focused maintenance plans. The NEMA 3R enclosure design provides weather-resistant protection, making outdoor and damp indoor installations practical without compromising safety.

Why this fused disconnect stands out

• Two-pole isolation with built-in fusing: ensures both hot conductors are safely disconnected and protected, reducing fault risk during servicing.
• 30A at 240V: suitable for a wide range of motors, pumps, and equipment commonly found in factories, warehouses, and outdoor installations.
• Weather-ready enclosure (NEMA 3R): durable housing withstands rain, dust, and temperature variations, keeping connections protected year-round.
• Lockout/Tagout readiness: designed to support safe maintenance practices, allowing technicians to apply locks and tags to prevent accidental re-energization.
• Long-term durability: built to endure demanding service life in harsh environments, reducing maintenance cycles and downtime.

Ideal applications

• Industrial equipment and motor control where a dedicated disconnect is required for safe servicing
• Outdoor HVAC units, pumps, conveyors, and other mechanical systems needing reliable isolation
• Commercial electrical rooms and outdoor installations that must meet strict lockout/tagout and safety standards

Technical specifications

• 30A
• Voltage rating: 240V
• Poles: 2-Pole
• Enclosure: NEMA 3R
• Product type: Fused Disconnect Switch
• Brand: Square D
• Model: H221NRB

Installation and safety tips

• Plan placement in accordance with local electrical codes and ensure the disconnect is accessible for quick emergency shutdowns and routine maintenance.
• Integrate with lockout/tagout procedures to safeguard personnel during service work.
• Verify compatibility with the appropriate fuse type and ensure all connections are secure before energizing the circuit.
• Regularly inspect the enclosure for integrity and keep the access doors sealed to maintain NEMA 3R protection.