Shop Now Siemens / ITE CJ3B150 – 150A 3 Pole Molded Case Circuit Breaker

Built to handle severe electrical faults, the Siemens CJ3B150 is a 150A, 3-pole current-limiting breaker from the legacy Cordon series. It employs thermal-magnetic trip technology with fixed thermal and adjustable magnetic settings. This bolt-on unit installs into older ITE and Siemens motor control centers, switchboards, and CDP panelboards, eliminating the need for a CFD63B150 retrofit kit. With a 100kAIC rating at 480VAC, its built-in Amp-Trap limiters rapidly clear massive short circuits.