Brand New Siemens / ITE JJ3B275 – 275A 3 Pole Molded Case Circuit Breaker

Engineered to restore power in aging facilities, the Siemens JJ3B275 is a 3-pole, 275A molded case circuit breaker. It delivers reliable thermal-magnetic protection with an adjustable magnetic trip unit, rated for 25 kAIC at 480VAC. This JJ-frame breaker is an exact replacement for older Siemens and ITE infrastructure. It mounts into P4 and P5 panelboards, SB switchboards, and FC interiors. By utilizing the original bolt-on hardware, it eliminates the need for costly retrofits.