Westinghouse FB3020L Molded Case Circuit Breaker

The Westinghouse FB3020L is a 3-pole, 20 A molded case circuit breaker rated for 600 VAC, designed for reliable three‑phase overcurrent protection in industrial power distribution. Part of the FB Frame family, it uses thermal-magnetic protection for branch circuits and equipment, and is commonly installed in motor control centers, switchboards, industrial automation panels, and manufacturing equipment. It supports panel or switchboard mounting and operates on 50/60 Hz, protecting low-amperage three-phase equipment across motor control systems, HVAC, conveyors, automation machinery, and other industrial power distribution applications. Style 4975D71G35; Part Number FB3020L. Common replacements include Eaton FB3020, Siemens HFB3020, and Square D FA3420.