Place Order Siemens MBK225A – 225A 2 Pole Main Breaker Kit

Built for residential and light commercial applications, the Siemens MBK225A is a 2-pole, 225A main breaker kit rated for 120/240VAC. It provides essential overcurrent and short-circuit protection for your electrical system’s service entrance. This bolt-on main breaker is specifically engineered to install into Siemens Ultimate, PL Series, and ES Series load centers. It serves as an exact replacement for the legacy MBK225. Featuring thermal-magnetic trip technology, it delivers a 22kA rating.