Federal Pacific Electric 2B125A Main Circuit Breaker

The Federal Pacific Electric 2B125A is a two-pole main circuit breaker designed for 120/240 VAC service with AL-CU lug terminals. This Type 2B125A model is the main-disconnect device used inside electrical panels to provide overcurrent protection for the panel's incoming feeder. The AL-CU lug designation indicates compatibility with both aluminum and copper conductors, allowing flexible wiring options for installation. With its two-pole construction, it interrupts both hot legs of a 120/240 VAC system, enabling a single point of power shutoff for servicing or safety. As a Federal Pacific product, this 2B125A model is intended for use in panels that specify this main breaker type, and it is sized to serve standard 120/240 VAC distribution in typical residential or light commercial applications. The model name 2B125A helps identify compatibility with Federal Pacific panels that call for this main breaker configuration.