The Siemens AG FbcB125M-Hb is a 125 Amp main circuit breaker from Siemens AG, designed to serve as the primary disconnect in electrical distribution systems. The model designation FbcB125M-Hb identifies the specific main breaker within Siemens' FbcB family. With a 125 Amp rating, this device defines the service capacity it is intended to protect in appropriate installations.
