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    3-Phase Buck Boost Transformers

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    One 3-phase buck boost transformer? Or 3 single phase transformers?

    3-phase buck boost transformers are used in 3-phase industrial and commercial electrical systems to either buck (lower) or boost (raise) the supply voltage from one type to another. While three single phase transformers can theoretically get the job done, a 3 phase buck boost transformer saves space and money, and it is much lighter than three single phase transformers would be.

    Primary voltages range anywhere from 120V to 480V with secondary voltages falling between 12V and 48V. Some of the most common uses for 3 phase buck boost transformers are air conditioning, ventilation, and HVAC systems. They are also most commonly wall-mounted.

    A few buck boost transformer tips.

    The biggest advantages of buck boost transformers are their compact, lightweight size and their relatively low cost. They also come in a variety of voltage combinations, and are fit for either indoor or outdoor use. Buck boost transformers are also static devices, so while they may not need toxin vents, it’s important to make sure their transformer clearance requirements are met.

    Same-day shipping available
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    1-year Warranty

    Transforming the way you buy your transformers.

    Bay Power is proud to carry a wide variety of 3-phase buck boost transformers for all your industrial and commercial needs. We stock only the best products from top transformer manufacturers so we can pass the quality and performance directly to you. Contact our knowledgeable product specialists today and discover our advantage.

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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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    Fill your wallet, not the landfill.

    Have any old or unused 3-Phase Buck Boost 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 3-Phase Buck Boost 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.

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    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 3-Phase Buck Boost 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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    Product Condition FAQ

    We are proud to stock a variety of competitively priced, new and reconditioned components from the leading manufacturers of 3-Phase Buck Boost Transformers.


    Thanks to our extensive inventory of 3-Phase Buck Boost 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 3-Phase Buck Boost Transformers shouldn’t be.

    New Surplus

    Our selection of new surplus 3-Phase Buck Boost 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.