Westinghouse FDB3150L Molded Case Circuit Breaker

The Westinghouse FDB3150L Molded Case Circuit Breaker delivers 150 A of overcurrent protection in a 600 V, 3‑pole package for three‑phase systems. This thermal‑magnetic three‑pole breaker is built on the FDB Frame with an L configuration and is designed for branch circuit and equipment protection in industrial distributions, including motor control centers, switchboards, and industrial automation panels. It supports panel or switchboard mounting and operates at 50/60 Hz, making it suitable for high‑amperage applications such as motor control systems, conveyors, HVAC infrastructure, and processing machinery within power distribution schemes. Note: housing/case is chipped in this unit. Common replacements include Eaton FDB3150L, Siemens HFD3150, and Square D FA34150.