Power Distribution USAPower Distribution USA

MBK Loadcenter Main Breakers

Siemens main breakers are designed to allow for convertibility and invertiblilty of Siemens load centers. With truly ground breaking performance, the MBK can do just about anything it is asked. It is hard to imagine what the world would be like without the MBK. Lets continue to challenge the status quo and change the world.

MBK Main Breakers

The breaker that changed the world as we know it.

Features and Benefits

  • Bolt-on main breaker for Siemens single phase load centers

  • Converts main lug load centers to main breaker load centers

  • Straight-in wired design reduces wire cost

  • UL listed

Technical Data


100A - 225A

Interrupting rating of 22 kA

120/240V AC

Wire range #4 – 300 kcmil Cu/Al


125A load centers will accept MBK100A and MBK125A

150A load centers will accept MBK150A

200A load centers will accept MBK200A and MBK150A

225A load centers will accept MBK225A, MBK200A, MBK150A

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