Siemens MBK100 Main Breaker Kit
Siemens
MBK100
Main Breaker Kit
Brand
Siemens
SKU
MBK100
Quantity
Core Specs
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Siemens MBK100 - 100A 2 Pole Main Breaker Kit
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Quantity
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Description
Providing 100A of main service capacity, the Siemens MBK100 functions as a dedicated main breaker kit for residential distribution. This two-pole unit delivers essential thermal-magnetic overcurrent protection. It mounts into Siemens EQ, Ultimate, and PL series load centers, allowing for straightforward main breaker conversions. For newer installations, this model is replaced by the updated MBK100A kit.Specifications
| Brand | Siemens |
|---|---|
| Part Number | MBK100 |
| Series | MBK |
| Amperage | 100A |
| Poles | 2 |
| Mounting Style | Bolt-On |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 22kA @ 120/240VAC |
| Frame Type | MBK |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens EQ, Ultimate, PL Series Load Centers |
| Wire Gauge | 4 AWG - 2/0 AWG (Cu/Al) |
| Max Wire | 2/0 AWG |
| Min Wire | 4 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Fixed Magnetic |
| Accessories | Mounting Hardware, Line Side Lugs Included |
|---|---|
| Standards | UL 489, CSA C22.2 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Main Breaker Kit, 22kAIC, HACR Rated |
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Reviews
Review summary
Customers rate this product 4.9 out of 5 based on 8 reviews.
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Rating
8 reviews
- MEmichael e.Verified BuyerReviewingSiemens MBK150 - 150A 2 Pole Main Breaker KitI recommend this productRated 5 out of 5 stars9/28/26Excellent 👍
Came quickly, in great condition, worked perfectly
- RNRoderick N.Verified BuyerReviewingSiemens MBK200 2 Pole Circuit BreakerI recommend this productRated 5 out of 5 stars7/29/25Exact replacement!
Exact replacement 👍
- WKWilliam K.Verified BuyerReviewingSiemens MBK175A - 175A 2 Pole Main Breaker KitI recommend this productRated 5 out of 5 stars7/29/25Works perfey
Brand new, just as described. This was an odd amperage amount to stock, I'm glad they had this.
- MBMike B.ReviewingSiemens MBK200A - 200A 2 Pole Main Breaker KitI recommend this productRated 5 out of 5 stars3/11/21Classy Breaker
Brand new item, came packaged well. Quick deliverly
- FBFrank B.ReviewingSiemens MBK200A - 200A 2 Pole Main Breaker KitI recommend this productRated 5 out of 5 stars2/7/19Great company would like to
Great company would like to see orders shipped more quickly