Mega Sale Siemens / ITE FJ3B12500S01 – 125A 3 Pole Molded Case Circuit Breaker

Providing reliable thermal-magnetic protection alongside remote disconnect functionality, this 125A F-frame breaker comes equipped with a pre-installed shunt trip. It fastens securely into vintage Siemens and ITE F1, F2, and SB series distribution equipment. This exact-match component allows electrical contractors to service older commercial infrastructure efficiently, bypassing the need for specialized mounting kits that are mandatory when installing the newer FXD63B125 substitute models.