Siemens JXD62B300 Molded Case Circuit Breaker

Siemens JXD62B300 Sentron molded‑case circuit breaker provides 300 A of continuous overcurrent protection for 2‑pole, 600 V AC circuits in commercial and industrial electrical distribution. This JXD‑series MCCB uses a thermal‑magnetic trip mechanism with a non‑interchangeable trip unit and is rated for ambient operation up to 40°C, ensuring predictable tripping under real‑world conditions. With a 25 kA short‑circuit rating at 600 V, it is designed to interrupt fault currents safely in standard 600 V distribution panels, switchboards, and feeders. As part of Siemens' Sentron family, the JXD62B300 is intended for use in panel configurations that specify the JXD/JD molded‑case breakers, providing compact protection for branch circuits and motor loads while fitting typical Siemens busbar layouts and terminal schemes.