Eaton / Cutler-Hammer FDPW365MR – 400A, 3-Pole Main Fusible Panel-Mount Switch – FDPW Series

Meet the Eaton / Cutler-Hammer FDPW365MR — a 400A, 3-Pole Main Fusible Panel-Mount Switch from the FDPW Series. Engineered for industrial-duty load isolation and robust overcurrent protection, this switch is built to keep large electrical feeds safe and controllable in demanding switchboard and panelboard environments.

What it does: This main fusible switch serves as the primary disconnect for three-phase circuits, delivering reliable isolation during maintenance and strong protection against overloads. The panel-mount form factor is designed for straightforward installation in standard enclosures, simplifying upgrades or new-build panel assemblies.

• 400A, 3-Pole configuration: Ideal for three-phase feeders that require a sturdy, centralized disconnect and protection at the service entrance or major downstream panels.
• Panel-mount construction: Optimized for integration into conventional switchboards and panelboards, reducing installation time and cabinet-space conflicts.
• Main fusible protection: Combines a high-current disconnect with fusing to guard downstream equipment from overcurrent events.
• Industrial-duty design: Built to withstand the rigors of manufacturing floors, facilities, and process environments where reliability matters most.

Ideal for facilities that demand clear, decisive isolation and dependable protection for critical electrical feeds—from manufacturing lines to large processing equipment and heavy panel installations. The FDPW365MR is part of Eaton's trusted FDPW Series, reflecting the brand's commitment to consistent performance and compatibility with standard electrical architectures.

Technical snapshot:

• Current rating: 400A
• Poles: 3
• Mounting: Panel-Mount
• Function: Main Fusible Switch