Eaton Cutler-Hammer DG221NGB - 30A, 240V, 2-Pole, Fused Disconnect Switch

The Eaton Cutler-Hammer DG221NGB is a 30A, 240V, 2-Pole Fused Disconnect Switch engineered for safe, reliable electrical isolation in demanding industrial and commercial environments. Built to support proper lockout/tagout procedures, it delivers dependable disconnection under load while withstanding long-term use in active electrical rooms and equipment bays.

Key Benefits

• Fused protection for overload safety: The integrated fuses provide overcurrent protection, giving you a controlled path to interrupt power during fault events while you perform maintenance.
• Two-pole isolation: With two hot legs opened simultaneously, this switch minimizes arc-flash risk and ensures a complete, clear disconnect on 240V circuits.
• Maintenance-ready and LO/TO compatible: Designed to support lockout/tagout procedures, helping technicians secure a safe work environment during service.
• Durable, industrial-grade design: Built to endure the rigors of everyday operation in busy facilities, reducing nuisance trips and downtime.
• Clear specification alignment: Precisely matched to 30A, 240V applications, making it a reliable choice for motor feeds, feeders, and line-side disconnects.

Ideal For

• Maintenance technicians and electricians performing routine servicing of motors, pumps, conveyors, and HVAC equipment
• Facilities engineers overseeing electrical rooms and service entrances in industrial and commercial settings
• Panel builders integrating a robust, compliant disconnect into control circuits

Use Scenarios

• Shutting down a motor-driven conveyor line for scheduled maintenance
• Isolating a pump or fan during repairs without sacrificing overall system safety
• Serving as a dedicated service disconnect for a critical branch circuit on 240V systems

How It Works

Installed in a 240V, two-pole circuit, the DG221NGB uses internal fuses to interrupt current during overloads and provides a clear, debatable isolation point when the handle is switched to OFF. The fused design adds an extra layer of protection for the circuit while technicians lock out the equipment for safe maintenance, ensuring the power cannot be re-energized until verification and removal of the lockout device.

Specifications

• Amperage Rating: 30A
• Voltage Rating: 240V
• Number of Poles: 2-Pole
• Product Type: Fused Disconnect Switch
• Brand: Eaton Cutler-Hammer
• Model: DG221NGB

Maintenance and Safety Tips

Regularly inspect the fusible links for signs of wear or overheating, and replace only with the same 30A rating to preserve protection. Use proper lockout/tagout devices when performing maintenance and ensure the disconnect remains in the OFF position during service. Keep documentation of inspections and fuse replacements as part of your safety compliance routine.