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Polemount Transformers

Polemounted transformers are widely used for single- and three-phase power distribution across the U.S. Maddox stocks a range of overhead units and supplies them to commercial and industrial customers.

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Polemount Specifications

Voltage: 5 – 333 kVA

Maddox liquid-filled polemount transformers are designed, built, and tested in accordance with all applicable IEEE standards. Each unit is built to comply with the latest DOE efficiency regulations. They are ideal for utility applications requiring single-phase and three-phase distribution.

Standard Features

Optional Upgrades

Same Day Quotes

Price and lead time today

3 Year Warranty

Backed by US-based support

USA Options

Made-in-America available

Hit Your Lead Time with Stock and Custom Options

Maddox keeps polemounted transformers in stock for fast deliveries and builds custom ones with some of the best lead times in the industry.

Stock

Hit project deadlines with common kVA sizes and voltages, in stock and ready to ship.

Custom

Build exactly what you need with extensive polemount customizations available.

See How We Earned +800 Five Star Reviews

Maddox polemounted transformers provide reliable power to critical projects across the United States.

Competitive pricing, always the most inventory, and exceptional after sales support. They are my "go to" option for transformers

David D.

This is my 5th order from Maddox. Always knowledgeable and helpful. Every transformer I have purchased has worked perfectly.

Jason W.

They have stock when others don’t and are quick to ship and fill their orders. VERY THANKFUL we found them.

Mike A.

The transformer I ordered was delivered onsite at our project in two business days. Great service!

Jerome T.

Great company easy to deal with. Every transformer I buy will be from Maddox.

Austin M.

First time purchasing from Maddox. Was very easy and we are pleased with the results of our purchase.

Chris O.

Get a Quote in Minutes

Fill out the form and we will get back to you as soon as possible. Our average response time during business hours is 30 minutes.

Meet Any Spec with Extensive Customizations

Meet your exact spec with customized polemounts designed, built, and tested in accordance with the highest industry standards including NEMA, ANSI, DOE, and IEEE as applicable.

Cover Ground Straps

Cover ground straps bond the transformer cover to the tank to maintain proper grounding continuity and safely direct fault current to ground on polemount transformers.

HV Cover-Mounted Bushings

High voltage cover-mounted bushings provide insulated high-voltage connection points directly on the transformer cover.

LV Side-Mounted Bushings

Low voltage side-mounted bushings provide insulated low-voltage connection points on the side of the transformer tank for outgoing power.

Pressure Relief Devices

Pressure relief devices vent excess internal pressure during fault or overheating conditions to help prevent tank damage to polemount transformers.

Frequently Asked Questions

Shipping

How is shipping arranged for Maddox’s polemount transformers?

Maddox ships polemount transformers anywhere in North America, handling all logistics at no additional charge. Request a quote here to get specific pricing and lead times.

New vs Remanufactured

Does Maddox sell new and remanufactured polemount transformers?

Yes, Maddox sells both new and remanufactured polemount transformers, so you can meet the budget and deadline of any project.

Remanufactured

Are Maddox remanufactured polemount transformers reliable?

Yes, Maddox remanufactured polemount transformers are tested in accordance with NEMA, ANSI, DOE, and IEEE standards as applicable. Learn about remanufactured transformers here.

American Made

Are Maddox polemount transformers BABA compliant?

Many Maddox products are made in the USA, but not all. Our goal is to provide the majority of our products domestically, while leveraging global supply as needed. We specify “American Made” on our quotes when applicable. Maddox can also provide substations to meet “Build America, Buy America” requirements. Ask for BABA in your quote and learn more about BABA here.