Shop Now Eaton / Cutler-Hammer JA3150 – 150A 3 Pole Molded Case Circuit Breaker

Part of the legacy Westinghouse and Cutler-Hammer J-frame series, this 150A three-pole breaker delivers robust thermal-magnetic protection for commercial and industrial facilities. It installs into older Westinghouse panelboards, switchboards, and motor control centers requiring a bolt-on connection. Rated for 25kAIC at 240VAC and 22kAIC at 480VAC, it features an adjustable magnetic trip and comes equipped with load-side lugs. For modern upgrades, this unit is replaced by the JD3150 or JDB3150.