Westinghouse FDB3050 Molded Case Circuit Breaker

The Westinghouse FDB3050 Molded Case Circuit Breaker is a 50 A, 3‑pole, 3‑phase device designed for dependable overcurrent and short-circuit protection in industrial power distribution. Part of the FDB Frame family, it is panel or switchboard mounted and uses thermal-magnetic protection to safeguard branch circuits and connected equipment. Rated for 50/60 Hz operation, this MCCB is commonly installed in motor control centers, switchgear, and industrial control panels to protect medium‑amperage motors, conveyors, HVAC infrastructure, and automation machinery. It is widely used by maintenance teams, OEMs, and electrical integrators for replacement, retrofit upgrades, and ongoing maintenance of industrial electrical infrastructure. Common replacements include Eaton FDB3050, Siemens HFD3050, and Square D FA3450.