Westinghouse HFD3045 Molded Case Circuit Breaker

The Westinghouse HFD3045 Molded Case Circuit Breaker is a 45 Amp, 3-pole device that provides thermal-magnetic overload and short-circuit protection for 3‑phase branch circuits in industrial power distribution. Designed for bolt-on mounting in the HFD frame series, it operates at 600 VAC and 250 VDC with a 50/60 Hz rating, making it suitable for MCCs, industrial control panels, and equipment such as processing lines, conveyors, and HVAC systems. This molded case breaker is intended for industrial and commercial electrical systems requiring reliable protection in motor control centers and automation cabinets, and it serves as a replacement or retrofit for existing HFD3045 installations. Common replacements include Eaton HFD3045, Cutler-Hammer HFD3045, and Westinghouse HFD3045L.