Westinghouse F3070 Molded Case Circuit Breaker

The Westinghouse F3070 is a three-pole, 70-amp molded case circuit breaker from the F Frame family designed for dependable three-phase overcurrent protection in industrial power systems. As a thermal-magnetic protection device, it combines instantaneous short-circuit sensing with overload coordination to safeguard motors, drives, and power distribution equipment in harsh environments. The F3070 is intended for panel or switchboard mounting and is commonly installed in motor control centers, switchboards, manufacturing equipment, and industrial automation panels where robust branch-circuit and equipment protection is required. It supports 50/60 Hz operation and provides reliable protection for high-current, three-phase loads found in MCCs, switchgear, HVAC equipment, conveyor lines, and industrial processing machinery. The part number F3070 identifies this unit's 3P, 70 A Westinghouse molded case breaker engineered for industrial electrical distribution networks. For upgrades or retrofits, compatible or common replacements include Eaton FD3070, Siemens HFD3070, and Square D FA36070, reflecting its role in cross-brand interchange within industrial control architectures.