Westinghouse FB3050L Molded Case Circuit Breaker

The Westinghouse FB3050L is a 50 Amp, 600 Volt three‑pole molded‑case circuit breaker in the FB Frame family, delivering thermal‑magnetic overcurrent protection for industrial power distribution. Built for panel or switchboard mounting, this 3‑phase device protects branch circuits and connected equipment in motor control centers, switchgear, and industrial control panels that run on 600‑V networks at 50/60 Hz. The FB3050L is designed for higher‑amperage applications such as motor control systems, conveyors, HVAC infrastructure, automation machinery, and other industrial processing equipment, providing reliable protection against overloads and short circuits. Key specifications include brand Westinghouse, part number FB3050L, product type Molded Case Circuit Breaker, and current rating 50 A with a 3‑pole, 3‑phase configuration. Common replacements used in the field include Eaton FB3050L, Siemens HFB3050, and Square D FA3450, underscoring its role in cross‑brand compatibility within standard industrial distribution ecosystems.