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Siemens MBK225A Main Breaker Kit
Siemens
MBK225A
Main Breaker Kit
Brand
Siemens
SKU
MBK225A
Quantity
Core Specs
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Siemens MBK225A - 225A 2 Pole Main Breaker Kit
New
Quantity
Quantity
Siemens MBK225A - 225A 2 Pole Main Breaker Kit
New
Quantity
| Brand | Siemens |
|---|---|
| Part Number | MBK225A |
| Series | MBK |
| Amperage | 225A |
| Poles | 2 |
| Mounting Style | Bolt-On |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 22kA @ 120/240VAC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Siemens Ultimate Load Centers, PL Series, ES Series |
| Wire Gauge | 1 AWG - 300 kcmil (Cu/Al) |
| Max Wire | 300 kcmil |
| Min Wire | 1 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 |
| Approval | UL |
| Temp Rating | 40C |
| Construction Features | Main Breaker Kit, 22kA Interrupt Rating, HACR Rated, For Ultimate Load Centers |
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Quantity
Siemens MBK225A - 225A 2 Pole Main Breaker Kit
Re-Certified
Quantity
| Brand | Siemens |
|---|---|
| Part Number | MBK225A-R |
| Series | MBK |
| Amperage | 225A |
| Poles | 2 |
| Mounting Style | Bolt-On |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 22kA @ 120/240VAC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Siemens Ultimate Load Centers, PL Series, ES Series |
| Wire Gauge | 1 AWG - 300 kcmil (Cu/Al) |
| Max Wire | 300 kcmil |
| Min Wire | 1 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 |
| Approval | UL |
| Temp Rating | 40C |
| Construction Features | Main Breaker Kit, 22kA Interrupt Rating, HACR Rated, For Ultimate Load Centers |
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Description
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.Specifications
| Brand | Siemens |
|---|---|
| Part Number | MBK225A |
| Series | MBK |
| Amperage | 225A |
| Poles | 2 |
| Mounting Style | Bolt-On |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 22kA @ 120/240VAC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Siemens Ultimate Load Centers, PL Series, ES Series |
| Wire Gauge | 1 AWG - 300 kcmil (Cu/Al) |
| Max Wire | 300 kcmil |
| Min Wire | 1 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 |
| Approval | UL |
| Temp Rating | 40C |
| Construction Features | Main Breaker Kit, 22kA Interrupt Rating, HACR Rated, For Ultimate Load Centers |
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Reviews
Review summary
Customers rate this product 4.9 out of 5 based on 7 reviews.
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Rating
7 reviews
- 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
- RDRichard D.ReviewingSiemens MBK200 2 Pole Circuit BreakerI recommend this productRated 4 out of 5 stars1/2/19CEO
I’m working with Adam on a return right now
I’ll let you know the outcome