BJ3125 is an Eaton/Bryant Type BJ 125A, 3‑pole plug‑on main circuit breaker for 240V service, delivering 10 kAIC interrupting capacity with a common trip for all poles. It accepts copper or aluminum conductors up to #2 AWG and up to 300 kcmil Cu/Al, and is designed for use as the main disconnect in BJ‑series panels. Typically installed in six‑space panels and compatible with legacy Bryant and Cutler-Hammer installations, this main breaker provides a single point of control for the entire panel.
