Eaton / Cutler-Hammer FDPW327BF – 800A, 3-Pole Vertical Bottom Feed Main Fusible Panel-Mount Switch – FDPW Series

Eaton / Cutler-Hammer FDPW327BF is a rugged 800A, 3-Pole Vertical Bottom Feed Main Fusible Panel-Mount Switch from the FDPW Series. Engineered for switchboard and panelboard applications, this device delivers reliable load isolation and primary overcurrent protection in demanding industrial environments. Its vertical bottom feed configuration is purpose-built to simplify wiring routes and fit neatly into compact panel layouts.

Why this main fusible switch stands out

The FDPW327BF combines a robust 800 amp rating with a three-pole design to ensure balanced protection across all phases. As part of the FDPW Series, it provides a dedicated, panel-mount solution that consolidates protection and isolation into a single, durable unit. The vertical bottom feed setup minimizes conduit sprawl and aligns cleanly with common panel architectures, helping installers achieve a neat, reliable installation with fewer components.

Key benefits

• High-current capability — 800 A rating supports demanding loads found in large panelboards and switchboards.
• Three-pole protection — ensures synchronized disconnection across all phases for dependable fault isolation.
• Vertical bottom feed design — simplifies wiring, reduces panel depth, and streamlines installation in existing enclosures.
• Integral fusible main switch — combines protection and isolation in one robust panel-mount unit for easy maintenance and serviceability.
• Industrial-duty construction — built to withstand the rigors of heavy electrical environments while delivering long-term performance.

Ideal use cases

Perfect for industrial facilities, manufacturing lines, and large electrical rooms where a reliable main isolation point is required. It serves as the primary protection device for feeders feeding switchboards and panelboards, helping to stabilize electrical distribution and protect downstream equipment during overloads or faults. The panel-mount, bottom-feed configuration is especially advantageous in retrofits or new installations where space and wiring routing matter.

Specifications at a glance

• Current rating: 800 A
• Poles: 3
• Mounting: Panel-mount (enclosed fusible switch)
• Configuration: Vertical bottom feed
• Series: FDPW
• Type: Main fusible switch

As part of the Eaton / Cutler-Hammer FDPW Series, the FDPW327BF is designed for durable, dependable protection in panelboards and switchboards. For installers and maintenance teams seeking a single, robust main protection solution that integrates seamlessly into standard panel layouts, this 800A, 3-Pole Vertical Bottom Feed option delivers clear advantages in protection, installation simplicity, and long-term performance.