Westinghouse FB3070L Molded Case Circuit Breaker

The Westinghouse FB3070L is a 70 Amp, 3-pole molded case circuit breaker in the FB frame designed for 600 V service in industrial distribution. As a thermal-magnetic device, it provides overcurrent and short-circuit protection for three-phase systems and is mounted in panel or switchboard configurations for easy integration into motor control centers, switchgear, and industrial automation panels. The unit is specified for 50/60 Hz operation and is suitable for high-amperage protection in MCCs, conveyor equipment, HVAC infrastructure, automation machinery, industrial processing systems, and other electrical distribution panels powered by 600 V networks. Common replacements include Eaton FB3070L, Siemens HFB3070, and Square D FA3470.