Siemens JXD63B400L – 400A 3 Pole Molded Case Circuit Breaker Big Sale

Designed for robust industrial power distribution, this 400-amp JD-frame breaker comes complete with factory-installed TA2J6500 lugs accepting 3/0 AWG to 500 kcmil wire. The unit mounts into Siemens Sentron P4, P5, S4, and S5 panelboards, as well as compatible switchboards and motor control centers. While this specific Sentron series is transitioning to the newer 3VA platform, it remains fully supported for existing infrastructure, offering 35kAIC at 480V and adjustable magnetic trip settings.