Siemens MBK200A – 200A 2 Pole Main Breaker Kit Final Sale

Part of the SENTRON family, the MBK200A is a 200A main breaker conversion kit designed for residential power distribution. This two-pole, 120/240VAC unit utilizes thermal-magnetic trip technology to protect panels from damaging overcurrents. This bolt-on kit installs into Siemens Ultimate, PL, and ES series load centers to convert a main lug panel into a main breaker setup. It also replaces older MBK200 and EQ9685 breakers. With a 22 kAIC rating, it safely handles substantial fault currents.