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    K-Factor Transformers

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    What is a K-Factor transformer?

    In heavy industrial applications, transformers that have to handle non-linear loads generate harmonic currents which can cause serious damage to both the transformer and the equipment it’s connected to. Circuit breakers can blow far below their threshold, transformers can overheat and even panelboards can overheat. With that being said, K-Factor transformers safely supply non-linear loads. They are also able to withstand the stresses placed on the transformer’s winding insulation.

    The K-Factor is essentially a measurement of the transformer’s ability to handle a harmonic-generating load in a given system. Each transformer will have a different K-Factor depending on the application, so the higher the K-Factor, the more significant the harmonic current. Commonly used K-Factor ratings include K-1, K-4, K-9, K-13, K-20, K-30, and K-40.

    Popular K-Factor transformer uses.

    K-Factor isolation transformers are commonly used across the following applications that produce heavy harmonics: office buildings, data processing centers, healthcare and education facilities, production lines, welding, and more. K-Factor transformers are an important facet of these applications since safety, productivity, and data are always on the line. Plus, by making sure you have the right K-Factor transformer, you will also save money in energy costs and potential damage costs.

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    Make Bay Power your X factor.

    When you’re looking for something as specialized as a K-Factor transformer, you need a shop that has that little something extra. When you shop with Bay Power, you can shop with the confidence and reassurance that you will get the transformer that’s right for you, thanks to our expert team of technicians.

    Choose from an extensive selection of transformers from leading transformer manufacturers. Have any questions regarding K-Factor transformers? Don’t hesitate to reach out to us at {{config path="general/store_information/phone"}}.

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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!

    Why Bay Power

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    Fill your wallet, not the landfill.

    Have any old or unused K-Factor Transformers 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 K-Factor Transformers 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 K-Factor Transformers 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 K-Factor Transformers.


    Thanks to our extensive inventory of K-Factor Transformers 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 K-Factor Transformers shouldn’t be.

    New Surplus

    Our selection of new surplus K-Factor Transformers 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.