Westinghouse HFB3090 Molded Case Circuit Breaker

The Westinghouse HFB3090 Molded Case Circuit Breaker is a 90 Amp, 3-pole device built for industrial power distribution and motor control applications. With a 600 VAC rating and a 50/60 Hz frequency, this thermal-magnetic breaker provides overload and short-circuit protection for 3-phase circuits in MCCs, processing equipment, OEM machinery, pump systems, HVAC systems, conveyor machinery, and other industrial control panels. Its bolt-on mounting and molded case construction belong to the HFB frame series, model HFB3090 with style number 4976D04G43, designed for branch circuit protection in demanding environments. Commonly used in manufacturing equipment and facility distribution assemblies, it serves maintenance teams, OEMs, and system integrators seeking reliable protection for high-capacity 3-phase power circuits. The unit is suitable for industrial power distribution systems requiring dependable thermal-magnetic protection, and is typically installed in MCCs and industrial control panels. Related replacements include Eaton HFD3090, Cutler-Hammer HFD3090, and Westinghouse HFB3090L.