Westinghouse FDB3125 Circuit Breaker, 125A, 3-Pole, 600V

Experience dependable three‑phase protection with the Westinghouse FDB3125 Circuit Breaker — a robust 125A, 3‑pole device engineered for demanding industrial electrical service, maintenance, and replacement projects. As a member of the F Frame family, this breaker delivers reliable overcurrent protection and a proven interface for compatible Westinghouse panels, making upgrades and retrofits smoother and more predictable.

• Manufacturer: Westinghouse
• Series: F Frame
• Part Number: FDB3125
• Product Type: Circuit Breaker
• Amperage: 125 A
• Poles: 3 (three‑pole)
• Voltage Rating: 600 V

The 3‑pole design is purposefully suited for three‑phase power systems, delivering coordinated protection for motors, conveyors, pumps, and other heavy‑duty equipment found in industrial settings. With a 600V rating, it’s compatible with typical industrial distribution networks, enabling safe, efficient shutdowns during faults and overloads while supporting smoother system maintenance.

Key advantages and practical use cases:

• Retrofit with confidence: Ideal for upgrading aging panels that specify F Frame breakers, helping to maintain consistent trip curves and mounting compatibility.
• New installations: Suitable for industrial facilities requiring reliable 3‑phase protection in distribution panels and switchgear.
• Maintenance readiness: Stock this common part on site to minimize downtime during equipment servicing or panel replacements.

How to verify compatibility and ensure a seamless fit:

• Check the part number—confirm that your application requires FDB3125 within Westinghouse’s F Frame lineup.
• Match the frame and interface—verify mounting, bus stabs, and mounting style align with your panel or switchgear labeled for F Frame breakers.
• Confirm voltage and current requirements—your system should operate within the 125 A, 600 V specification to ensure proper protection and operation.

If you’re unsure about compatibility, our team can help confirm fit based on your panel labeling and application requirements. The Westinghouse FDB3125 is designed to simplify replacements and upgrades in industrial environments, delivering dependable protection when it matters most.