Skip to main content
Expedited shipping available at checkout

Siemens MBK200 Main Breaker Kit

Siemens MBK200
Main Breaker Kit
Brand Siemens
SKU MBK200
Select Item Condition
Earn 239 SuperPoints

Quantity

Core Specs

See full specs
Amperage200A
SeriesMBK
Poles2
Mounting StylePlug-On
Bulk Pricing
Send your parts list for a volume quote.
Siemens MBK200 2 Pole Circuit Breaker

Siemens MBK200 - 200A 2 Pole Main Breaker Kit

New

$239.60 In Stock

Quantity

Description

Built for circuit protection, the Siemens MBK200 is a 2-pole main breaker kit rated for 200A and 120/240VAC. It has an interrupting rating of 22kA at 240VAC and a single-phase configuration. The breaker uses plug-on mounting and has a depth of 3.18 in. Its thermal magnetic trip provides long-time and instantaneous protection (LI) against overloads and short circuits.

Specifications

Key specifications
Brand Siemens
Part Number MBK200
Series MBK
Amperage 200A
Poles 2
Mounting Style Plug-On
Voltage 120/240VAC
Phase 1
AIC Rating 22kA @ 240VAC
Fit and installation
Frame Type MBK
Terminal Type Lugs
For Use With EQIII Load Centers
Max Wire 300 kcmil
Min Wire 1 AWG
Protection and operation
Trip Technology Thermal Magnetic
Trip Function Code LI
Trip Function Long-Time, Instantaneous
Standards and features
Temp Rating 40C

Product FAQs

5 answers
How should I use the Siemens MBK200's 200A rating when selecting it?

The 200A rating is the breaker's rated current, not its fault-interrupting capacity. Use it when coordinating circuit load, conductor ampacity and overcurrent protection requirements.

How does the 22kA interrupting rating affect breaker selection?

The MBK200 has a 22kA interrupting rating at 240VAC. Compare that rating with the available fault current at the installation point; the available fault current must not exceed the applicable interrupting rating.

What circuit arrangement should I select the MBK200 for?

The MBK200 is a 2-pole, single-phase breaker rated 120/240VAC. Use those characteristics to select it for the circuit's voltage, phase arrangement and required number of protected poles.

What protection does the thermal-magnetic LI trip provide?

The thermal-magnetic trip combines delayed thermal response to sustained overloads with instantaneous magnetic response to short-circuit current. LI means long-time and instantaneous protection, guiding selection where those two protective functions are required.

How much depth should I account for when planning the installation?

The MBK200 has a depth of 3.18 in. Account for that dimension when checking installation space, along with the clearances required for the installation.

SuperClub

Join free. Get 500 SuperPoints.

Earn points on eligible purchases and redeem them at checkout.

100 SuperPoints = $1 off.

Warranties

60-Day Warranty

Your purchase includes 60 days of SuperBreakers warranty coverage.

Get a Quote

Don’t see what you’re looking for?

We source obsolete and hard-to-find parts every day.

Shipping

Free Shipping Policy

Parcel shipments with item value over $99 qualify for free economy shipping within the continental US. Please call to confirm special handling instructions. We do not charge a handling fee or require a minimum amount on any order. SuperBreakers does not ship on customer accounts.

Read our full shipping policy

Same Day Shipping

We strive to ship out your items the same day the order is placed. In rare circumstances SuperBreakers may reserve up to 5 business days to consolidate orders for complete shipment.

Expedited Shipments

Orders being shipped via Next Day Air, 2 Day Shipping or 3 Day Shipping must be received by 3 PM EST to guarantee same-day shipments. Expedited orders only ship on normal business days. Shipments will NOT be sent out on Saturdays and Sundays.

International Shipping

All International orders require a $1,000 minimum order threshold. Due to the special nature of these shipments, we require that these be placed with a SuperBreakers representative. Additional shipping and instructions will apply. All International Orders are Non-Cancel and Non-Refundable.

Reviews

4.9
Rated 4.9 out of 5 stars
Based on 9 reviews
Rating
Ratings
9 reviews
  • RR
    Richard R.
    Verified Buyer
    Reviewing
    Siemens MBK175A - 175A 2 Pole Main Breaker Kit
    I recommend this product
    Rated 5 out of 5 stars
    10/16/26
    Main breaker replacement

    I was in a real in real bind. I needed a main breaker in a size that everyone told me wasn’t available anymore . Mike at Super Breakers proved them wrong. They not only had the breaker in stock but I had it the next day.

    Thank you

    Richard Reeves

    Reeves Electric Inc

  • ME
    michael e.
    Verified Buyer
    Reviewing
    Siemens MBK150 - 150A 2 Pole Main Breaker Kit
    I recommend this product
    Rated 5 out of 5 stars
    9/28/26
    Excellent 👍

    Came quickly, in great condition, worked perfectly

  • RN
    Roderick N.
    Verified Buyer
    Reviewing
    Siemens MBK200 - 200A 2 Pole Main Breaker Kit
    I recommend this product
    Rated 5 out of 5 stars
    7/29/25
    Exact replacement!

    Exact replacement 👍

  • 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.

  • 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