Siemens HJXD63B300L – 300A 3 Pole Molded Case Circuit Breaker Fast Shipping

Part of the Sentron family, this 300A unit mount breaker is built for standalone enclosures and switchboard applications. The “L” suffix indicates that it comes equipped with TA2J6500 line and load lugs, accommodating 3/0 AWG to 500 kcmil wire. Installation is streamlined for Siemens S4, S5, and SPP panelboards where unit mounting is required. The robust JD frame construction ensures durability in demanding industrial environments.