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    Bus Duct

    What is a bus duct?

    Bus duct is one of the most important components of electrical busway. Combined with bus duct disconnects, switches, and bus plugs among other components, every bus duct system relies on bus duct to deliver the electricity throughout the system. And when it comes to bus duct sizing, there is a model for everyone. Bus duct comes in a variety of standard sizes that can meet any number of commercial and industrial applications. Bus duct is typically constructed of copper, aluminium, or other highly conductive metals. Bust duct runs come in four varieties: service entrance run, plug-in vertical riser, plug-in horizontal riser, and feeder type tie run. Service entrance runs connect the utility to a switchboard. Vertical and horizontal risers are fed by a switchboard. Feeder type tie runs connect two switchboards.

    Types of bus duct.

    When we say bus duct is flexible, we’re not kidding. There are a number of different types of bus duct for different applications. Here are some of the most common:

    • Non-segregated bus duct is a collection of conductors and other busway components in an enclosure without interphase barriers. Non-segregated bus duct is used for important circuits that you may rely on more than others.
    • Segregated phase bus duct is similar to non-segregated bus duct except there are barriers between phases.
    • Isolated phase bus duct is used in heavy industrial applications with generators and transformers, and each current is individually enclosed and separated.
    • Cast resin bus duct is used across medium and low voltage applications that require the added protection of cast resin.
    • Gas insulated bus duct is used in industrial applications where space is at a premium.
    • Low voltage or LV bus duct is used in systems rated up to 600V.
    • Medium voltage bus duct is used in systems rated between 600V to 69kV.
    • Sandwich bus duct is a gapless bus duct system composed of individually insulated conductors that are connected with, and alternate with insulating material in a sandwich type configuration.
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    For service as reliable and flexible as your bus duct system.

    Your bus duct system deserves nothing but the best, and when you shop with Bay Power, you’ll get excellent products combined with excellent service. We stock some of the industry’s leading bus duct manufacturers including Starline bus duct, Square D bus duct, Eaton bus duct, ITE bus duct and Siemens bus duct, Cutler Hammer bus duct, ABB bus duct, along with products from Sentron, GE, Westinghouse, PDI and more. Discover our lineup of products, which all come with Bay Power’s one-year replacement warranty.

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    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!


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    Why Bay Power

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    Fill your wallet, not the landfill.

    Have any old or unused Bus Duct 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 Bus Duct 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 Bus Duct 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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    Product Condition FAQ

    We are proud to stock a variety of competitively priced, new and reconditioned components from the leading manufacturers of Bus Duct.


    Thanks to our extensive inventory of Bus Duct 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 Bus Duct shouldn’t be.

    New Surplus

    Our selection of new surplus Bus Duct 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.