Eaton / Cutler-Hammer FDP326BR – 600A, 3-Pole Vertical Main Fusible Panel-Mount Switch – FDP Series

Eaton / Cutler-Hammer FDP326BR is a 600A, 3‑pole vertical main fusible panel‑mount switch from the FDP Series, engineered for reliable load isolation and overcurrent protection in demanding switchboard and panelboard applications. Configured for vertical installation, this device delivers robust, space-conscious main disconnect performance where dependable protection matters most.

Why this FDP326BR stands out:

• High-capacity main protection — 600 A with a true three‑pole configuration provides comprehensive three‑phase isolation for large electrical loads, helping safeguard downstream equipment and processes.
• Vertical panel-mount design — Optimizes space inside panel enclosures and aligns with common vertical switchgear layouts, making retrofits and new installations cleaner and faster.
• Integrated fusible protection — Combines switching and fusing in a single, rugged unit to rapidly isolate faults and protect the distribution system from overcurrents.
• Series compatibility — Part of the FDP Series with readiness for legacy Westinghouse FDP vertical main switches, easing replacements and ensuring continuity in existing electrical architectures.
• Industrial-duty construction — Built to withstand the rigors of industrial environments, delivering dependable operation over the long term in switchboards and panelboards.
• Versatile applications — Ideal for primary disconnect roles in industrial facilities, data centers, and service entrances where reliable isolation and protection are essential.

Use cases and practical scenarios

In facilities upgrading or expanding their main distribution, the FDP326BR serves as the primary feeder disconnect, coordinating with upstream protection to maintain safe maintenance windows and minimize downtime. For sites moving from legacy FDP components, the vertical installation and FDP Series compatibility simplify replacements, preserve panel architecture, and provide a clear, centralized point of protection for critical electrical feeders.

Key specifications at a glance

• Model: FDP326BR
• Manufacturer: Eaton / Cutler-Hammer
• Series: FDP
• Current rating: 600 A
• Poles: 3
• Mounting: Panel‑mount, vertical installation
• Function: Main fusible switch for load isolation and overcurrent protection

Designed for professionals who demand clarity, reliability, and seamless integration with existing FDP‑based protection schemes, the FDP326BR delivers a practical, robust solution for main protection in switchboards and panelboards. Its vertical orientation and compatibility with legacy FDP components make it a thoughtful choice for both upgrades and new builds where space, performance, and long-term serviceability matter.