Siemens MBKQJ3150H Main Breaker Kit
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Core Specs
See full specsSiemens MBKQJ3150H - 150A 3 Pole Main Breaker Kit
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Description
Part of the Sentron series, the Siemens MBKQJ3150H provides reliable main power distribution for commercial facilities. This 150A, 3-pole kit includes a QJ2H frame breaker and mounting hardware. Designed specifically for Siemens P1 panelboards, the bolt-on assembly ensures a secure connection to the bus. It accepts 4 AWG to 300 kcmil wire. Rated at 42kAIC at 240VAC, this high-interrupting unit utilizes fixed thermal-magnetic trip technology to safely clear severe electrical faults.Specifications
| Brand | Siemens |
|---|---|
| Part Number | MBKQJ3150H |
| Series | MBK |
| Amperage | 150A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC |
| Phase | 3 |
| AIC Rating | 42kA @ 240VAC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Siemens P1 Panelboards |
| Wire Gauge | 4 AWG - 300 kcmil (Cu/Al) |
| Max Wire | 300 kcmil |
| Min Wire | 4 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Fixed Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Alarm Switch |
|---|---|
| Accessories | Mounting Hardware, Line Side Lugs Included |
| Standards | UL 489, CSA C22.2 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Main Breaker Kit, High Interrupting Capacity, 42kAIC, HACR Rated |
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Reviews
Review summary
Customers rate this product 4.9 out of 5 based on 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