Cutler-Hammer DH221NRK - 30A, 240V, 2-Pole, Fused Disconnect Switch

Meet the Cutler-Hammer DH221NRK, a purpose-built fused disconnect switch engineered for accurate, safe electrical isolation in demanding industrial and commercial environments. This 30A, 240V, 2-pole unit combines reliable disconnection with built-in overcurrent protection, so maintenance teams can work confidently without compromising system safety.

Designed to support proper lockout/tagout procedures, the DH221NRK provides a clear, verifiable disconnect under load, helping facilities minimize downtime and risk during service work. Its rugged construction and dependable performance are rooted in the Cutler-Hammer legacy, delivering long-term durability in harsh conditions.

Key specifications

• Amperage Rating: 30A
• Voltage Rating: 240V
• Number of Poles: 2-Pole
• Enclosure Rating: NEMA 3R
• Product Type: Fused Disconnect Switch
• Brand: Cutler-Hammer
• Model: DH221NRK

Why this design stands out

• Complete circuit isolation: The 2-pole configuration ensures both hot legs are simultaneously disconnected, delivering full protection for motors, pumps, and other 240V loads.
• Fused protection: Integrated fusing provides immediate interruption of faults, helping to shield downstream equipment from damage and reducing repair time after faults occur.
• Weather-resistant enclosure: With a NEMA 3R rating, this switch is built for resilience in outdoor or damp locations, maintaining performance in real-world environments.
• Lockout/Tagout readiness: The unit is designed to support safe lockout and tagging procedures, promoting safer maintenance practices and compliance with safety protocols.

Ideal applications and use cases

• Motor control for conveyors, fans, pumps, and compressors in industrial facilities
• Outdoor or exposed equipment where reliable shutdown is essential (e.g., compressors, HVAC units, irrigation systems)
• Maintenance disconnects for service and repair work requiring a clearly isolated power source
• Temporary power isolation during installation, testing, or equipment upgrades

The DH221NRK pairs trusted Cutler-Hammer performance with practical safeguards, making it a smart choice for facilities that demand dependable isolation, straightforward maintenance, and durable construction. If you’re upgrading a safety-critical disconnect or outfitting a new installation that must endure harsh conditions, this 2-pole fused switch delivers the reliability and clarity your operation relies on.