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    Main Breaker Load Centers

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    Main Breaker Load Centers

    For when you need your main breaker included.

    Main breaker load centers, unlike main lug load centers, are all built with a main breaker that provides overcurrent protection and disconnect capabilities in case of overload. All the power that comes through a main breaker load center will go through the main breaker first. Incoming power from the utility goes through the main breaker before going through the load center and being distributed to its various circuits. They are also service entrance-rated equipment. Main breaker load centers are also capable of distributing power to main lug load centers.

    Types of main breaker load centers.

    Main breaker load centers come in all shapes and sizes. Popular current ratings include 50A, 60A, 100A, 200A and even 400 amp main breaker load centers. Used across small and large scale residential applications including high rises, main breaker load centers can be used both indoors and outdoors, with NEMA 3R load centers being used outdoors and NEMA 1 load centers being used indoors. However, any NEMA rated enclosure can be used. Main breaker load centers can be either single phase or 3 phase load centers.

    Same-day shipping available
    24-hour emergency support
    Global supplier network
    1-year Warranty

    Your main supplier for main breaker load centers.

    You rely too much on your main load center to settle for anything less than the best the industry has to offer. So shop with Bay Power and get the quality and service that comes with being in the business for over 25 years. We carry an extensive selection of main breaker load centers from top load center manufacturers, all with our one-year replacement warranty. Take your pick from Square D, ABB, Bryant, Siemens, Schneider, Square D, GE, and more. So whether you’re looking for a 100 amp main breaker load center, or a 400 amp main breaker load center or anything in between, Bay Power has got you covered.

    Request a Quote

    Please fill in the following information or contact us at (800) 699-2980 to request a free quote. Our friendly sales staff would be glad to assist you!

    Why Bay Power

    Sell to Us

    Sell to Us

    Fill your wallet, not the landfill.

    Have any old or unused Main Breaker Load Centers lying around? Don’t get rid of them just yet. While we stock a wide range of quality electrical products and solutions, both new and reconditioned, we also buy back your unwanted equipment. So, before deciding what to do with your old Main Breaker Load Centers and components, have one of our expert technicians take a look to see if we can save a few parts, save the environment, and save you some cash.

    Sell to Us



    Great service shouldn’t end after the purchase. We pride ourselves on the relationships we build with our customer-first mentality and the quality of our Main Breaker Load Centers and components. That’s why we offer a 1-year replacement warranty on all of our electrical products and solutions from the top manufacturers. Because when you buy with Bay Power, you buy with confidence.

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    Buying Options

    Product Condition FAQ

    We are proud to stock a variety of competitively priced, new and reconditioned components from the leading manufacturers of Main Breaker Load Centers.


    Thanks to our extensive inventory of Main Breaker Load Centers and components, our resourceful and expertly trained staff will always be able to get the products that you need. Through our extensive network of suppliers, we are able to carry and acquire a huge variety of electrical products and solutions, so chances are if you need it, we can get it.


    Bay Power’s priority is providing you with reliable, high quality electrical hardware. That’s why our mission is to make sure our reconditioned electrical products and solutions function as perfectly as the day they were built. Because while the quality is high, the cost of Main Breaker Load Centers shouldn’t be.

    New Surplus

    Our selection of new surplus Main Breaker Load Centers may not arrive brand new in a box, but they function just as well, and have never had electricity run through them. All of the quality, none of the packaging, always with our 1-year replacement warranty.