Westinghouse HFB31800ML Molded Case Circuit Breaker

Westinghouse HFB31800ML is a 150-amp, 3-pole molded case circuit breaker built for industrial power distribution and motor control systems. It provides overload and short-circuit protection for 3-phase circuits with a thermal-magnetic trip, rated at 600 VAC and 50/60 Hz, and it mounts bolt-on within the HFB frame (HFB31800ML) for branch circuit protection in MCCs and industrial control panels. Typical installations include motor control centers and industrial control panels within industrial power distribution systems. Common replacements listed for this unit are Eaton HFD3150, Cutler-Hammer HFD3150, and Westinghouse HFB3150L.