Siemens JXD23B300 3 Pole Molded Case Circuit Breaker

The Siemens JXD23B300 is a 3-pole molded-case circuit breaker rated for 300 amperes at 240 volts AC, with a 65 kAIC interrupting capacity at 240 V, designed to safely interrupt fault currents and protect downstream equipment in commercial and light industrial power distribution. Among the ITE Sentron family, this unit employs a thermal-magnetic trip mechanism that provides overload protection and rapid short-circuit interruption, helping to prevent damage to feeders, motors, and electrical panels during fault conditions. The 3-pole configuration makes it suitable for use in distribution panels and switchgear that accept Siemens molded-case breakers, delivering reliable protection for feeders supplying large equipment or downstream protection devices in demanding environments. With molded-case construction and a compatibility profile aligned to the JXD series, the JXD23B300 is intended for installation where robust, high-current protection is required, and it is designed to coordinate with upstream protective devices within standard Siemens electrical infrastructure, and for reliable operation in demanding environments.