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Siemens MBKQJ3150 - 150A 3 Pole Main Breaker Kit

Brand Siemens
SKU MBKQJ3150
4.9
Rated 4.9 out of 5 stars
7 Reviews
Siemens MBKQJ3150 Molded Case Circuit Breaker
Free Shipping Over $99
Siemens MBKQJ3150 Molded Case Circuit Breaker

Siemens MBKQJ3150 - 150A 3 Pole Main Breaker Kit

Brand Siemens
SKU MBKQJ3150
4.9
Rated 4.9 out of 5 stars
7 Reviews
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Siemens MBKQJ3150 Molded Case Circuit Breaker

Siemens MBKQJ3150 - 150A 3 Pole Main Breaker Kit

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$1552.78 In stock

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DescriptionSpecificationsSuperClubWarranties
Description
Part of the Sentron family, this 150A main breaker kit provides essential overcurrent protection and a primary disconnect point for three-phase systems. The complete package includes the breaker and load side lugs to streamline setup in commercial environments. This bolt-on unit mounts into original Siemens P1 panelboards, ensuring a precise fit for legacy infrastructure. For updated panel designs, the MBKQJ3150A serves as a substitute. The three-pole breaker features a 10kAIC rating at 240VAC.

Specifications

Brand Siemens
Series MBK
Part Number MBKQJ3150
Amperage 150A
Voltage 240VAC
Poles 3
Phase 3
AIC Rating 10kA @ 240VAC
Mounting Style Bolt-On
Terminal Type Lugs
For Use With Siemens P1 Panelboards (Original)
Trip Technology Thermal Magnetic
Trip Function Code LI
Trip Function Long-Time, Instantaneous
Trip Adjustability Fixed Thermal, Fixed Magnetic
Wire Gauge 6 AWG - 300 kcmil (Cu), 4 AWG - 300 kcmil (Al)
Max Wire 300 kcmil
Min Wire 6 AWG
Available Options Shunt Trip, Auxiliary Switch, Alarm Switch
Accessories Mounting Hardware, Load Side Lugs Included
Standards UL 489, CSA C22.2
Approval CSA, UL
Temp Rating 40C
Construction Features Main Breaker, HACR Rated

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Warranties

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Shipping

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International Shipping

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4.9
Rated 4.9 out of 5 stars
Based on 7 reviews
Total 5 star reviews: 6 Total 4 star reviews: 1 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0
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7 reviews
  • RN
    Roderick N.
    Verified Buyer
    Reviewing
    Siemens MBK200 2 Pole Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    7/29/25
    Exact replacement!

    Exact replacement 👍

    Was this helpful?
  • WK
    William K.
    Verified Buyer
    Reviewing
    Siemens MBK175A - 175A 2 Pole Main Breaker Kit
    I recommend this product
    Rated 5 out of 5 stars
    7/29/25
    Works perfey

    Brand new, just as described. This was an odd amperage amount to stock, I'm glad they had this.

    Was this helpful?
  • MB
    Mike B.
    Flag of United States
    Reviewing
    Siemens MBK200A - 200A 2 Pole Main Breaker Kit
    I recommend this product
    Rated 5 out of 5 stars
    3/11/21
    Classy Breaker

    Brand new item, came packaged well. Quick deliverly

    Was this helpful?
  • FB
    Frank B.
    Flag of United States
    Reviewing
    Siemens MBK200A - 200A 2 Pole Main Breaker Kit
    I recommend this product
    Rated 5 out of 5 stars
    2/7/19
    Great company would like to

    Great company would like to see orders shipped more quickly

    Was this helpful?
  • RD
    Richard D.
    Flag of United States
    Reviewing
    Siemens MBK200 2 Pole Circuit Breaker
    I recommend this product
    Rated 4 out of 5 stars
    1/2/19
    CEO

    I’m working with Adam on a return right now

    I’ll let you know the outcome

    Was this helpful?

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