Instant Buy Siemens MBK150A – 150A 2 Pole Main Breaker Kit

Serving as the primary disconnect for residential systems, the Siemens MBK150A is a 150A main breaker conversion kit. Operating at 120/240VAC, this two-pole breaker ensures safe and reliable power distribution throughout the home. Designed to mount into Siemens Ultimate, PL, and ES series load centers using a secure bolt-on connection. It acts as a replacement for the older MBK150 and EQ9683 models. Featuring a 22kAIC interrupt rating, this kit handles substantial fault currents.