Residential Main Breakers

Residential Dual-Function Circuit Breakers (AFCI & GFCI)

Main Circuit Breakers

Siemens main breakers (MBK) 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.

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Features & 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

Find where to buy Siemens products with our distributor locator and at participating retail partners in the U.S.

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Here you will find important information, documents, and addresses relating to low voltage power distribution and electrical installation technology.

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Residential Main Breakers

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Residential Main Breakers

Siemens main breakers (MBK) are designed to allow for convertibility and invertiblilty of Siemens load centers.