Eaton Cutler-Hammer DH366NGK 600A 3P Safety Switch, NEMA 1, Fusible | AmpState

Engineered by Eaton Cutler-Hammer, the DH366NGK 600A 3P Safety Switch is built for reliable equipment disconnect and isolation at the point of use. Designed for indoor, everyday electrical work, this NEMA 1 fusible switch provides solid protection with straightforward serviceability—making it a dependable choice for retrofit projects and maintenance planning where keeping the exact part number matters.

With a robust 600 A rating spread across three poles, the DH366NGK delivers clear, predictable interrupting capacity for demanding loads in commercial and light industrial environments. Its fusible design integrates fuse elements directly into the disconnect, enabling fast, replaceable protection during routine maintenance without replacing the entire switch.

Key specifications

• Manufacturer: Eaton Cutler-Hammer
• Part number: DH366NGK
• Product type: Safety Switch
• Amperage: 600 A
• Poles: 3
• Enclosure: NEMA 1 (indoor)
• Type: Fusible safety switch

What sets DH366NGK apart

• Fusible protection in one package: Built-in fusing provides immediate circuit protection with the ability to replace fuse elements during maintenance, reducing downtime.
• Part-number stability for retrofits: The DH366NGK is ideal when you must retain the same part number across upgrades, simplifying spare parts and service schedules.
• Point-of-use isolation: Perfect for isolating equipment at the load side, enabling safe servicing without disrupting other circuits.
• Strategic indoor suitability: NEMA 1 enclosure is optimized for dry, indoor electrical rooms, control panels, and service areas where protection and organization matter.

Ideal use cases

• Retrofitting older panels or systems where part-number consistency reduces project risk and inventory complexity.
• Maintenance planning for manufacturing lines, HVAC suites, or processing equipment that requires routine isolation for service without fully rewiring.
• Disconnection and testing points in control panels and distribution boards within indoor facilities.

AmpState proudly offers the DH366NGK in stock. If you’re unsure about fit or compatibility with your panel, send us a message and we’ll help confirm the match. For engineers and electricians, this switch provides a dependable, retrofit-friendly solution that aligns with standard electrical practices and safety requirements.

Ready to move forward? Reach out to AmpState for quick verification of fit, then secure the DH366NGK 600A 3P Fusible Safety Switch for your next maintenance window or upgrade project.