Eaton Cutler-Hammer DG323NRB 100A 3P 240V Safety Switch, NEMA 3R, Fusible | AmpState

The Eaton Cutler-Hammer DG323NRB 100A 3P 240V Safety Switch is engineered for dependable equipment disconnect and clean isolation at the point of use. With a rugged NEMA 3R enclosure, it stands up to weather and harsh environments, making it a reliable choice for both indoor and outdoor installations. As a Fusible safety switch, it combines protective switching with straightforward maintenance, helping you keep systems safe without complicating service procedures.

Key specifications

• Manufacturer: Eaton Cutler-Hammer
• Part Number: DG323NRB
• Product Type: Safety Switch
• Amperage: 100 A
• Poles: 3
• Voltage: 240 V
• Enclosure: NEMA 3R
• Fusible: Yes

This 3-pole, 240V configuration is ideal for three-phase equipment loads, providing a secure way to de-energize circuits for maintenance, testing, or servicing. The fusible design adds an extra layer of protection, helping to prevent electrical faults from propagating and enabling precise control over laddered or modular motor circuits.

Why this matters

For retrofit projects where maintaining the same part number is important for stocking and compatibility, the DG323NRB offers a seamless, drop-in replacement option. Its NEMA 3R rating means weather resistance and reliable operation in outdoor or damp environments, so technicians can work with confidence year-round. The safety switch serves as a clear, isolating device that simplifies lockout/tagout procedures and reduces downtime during planned maintenance.

Who this is ideal for

• Electricians and facilities engineers responsible for equipment disconnects on three-phase systems
• Maintenance teams planning routine shutdowns and servicing of motors, pumps, conveyors, and HVAC gear
• OEMs and retrofit projects where preserving a consistent part number is advantageous

Practical tips and insights

• Use with compatible fuses to ensure coordinated protection for three-phase circuits
• Plan maintenance around the point-of-use isolation to minimize system downtime
• Verify compatibility by matching the DG323NRB part number when sourcing spares or replacements
• Consult AmpState for availability and to confirm fit if you’re upgrading or retrofitting existing panels

If you’re unsure about compatibility or need assistance confirming the fit, AmpState is ready to help. Need help matching a part number or confirming compatibility? Message us and we’ll help you confirm fit.