Trusted Brand Siemens / ITE HJ3B350 – 350A 3 Pole Molded Case Circuit Breaker

Engineered for heavy-duty commercial use, this 350-amp, 3-pole MCCB provides dependable long-time and instantaneous (LI) trip functions. The unit operates at up to 600VAC and 500VDC. Designed as a drop-in solution for aging infrastructure, it mounts into Siemens and ITE P4 or P5 panelboards. Using this exact replacement avoids the cost of upgrading entire enclosures. With a robust 65 kAIC rating at 480VAC, it handles significant fault currents safely while offering an interchangeable trip unit.