Eaton / Cutler-Hammer JA3125 – 125A 3 Pole Molded Case Circuit Breaker Premium

Built to support existing infrastructure, this 125A three-phase breaker delivers consistent thermal-magnetic protection for industrial environments. It mounts into classic Westinghouse panelboards and motor control centers, ensuring continued operation of older electrical distribution systems. Equipped with adjustable magnetic trip capabilities and an interchangeable trip unit design, it provides flexible coordination. Often replaced by the JD3125, this specific frame maintains original specs.