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America’s Fastest Transformer Supplier
Maddox Industrial Transformer is the leading U.S. supplier of new and remanufactured transformers, including padmount, substation, and dry-type units.
Unlike other OEMs who prioritize the needs of electric utilities, Maddox supports commercial and industrial projects with faster lead times and more responsive support.
We’re proud to support major American companies by providing reliable transformers to world-class organizations like:
Maddox has been recognized as one of America’s fastest growing privately-owned companies by the Inc. 5000 list for seven consecutive years.
We deliver transformers in less time, and with less headaches, while still supplying transformers to NEMA, ANSI, DOE, and IEEE standards as applicable.
Transformers available for same-day delivery.
Build-to-spec with short lead times.
Manufacturing capabilities for any design.
Helpful transformer people, not call centers.
The difference between us and other transformer manufacturers is our focus on speed and an easy buying experience.
With seven transformer facilities across America and customers in all 50 states, Maddox offers the scale of a national manufacturer and the service of a local supplier.
99 Park Industrial RoadWarehouse D Fountain Inn, SC 29644
4330 Batavia Road Building #37Batavia, OH 45103
303 B Greer Drive Simpsonville, SC 29681
230 West E Street Moscow, ID 83843
1725 Hughes Landing Blvd. Suite 875 The Woodlands, TX 77380
5590 SC-101 Woodruff, SC 29388
Founded by a team with decades of experience in transformers dating back to the 1980s, Maddox has a strong heritage of supplying new and remanufacturing reliable transformers.
With over 95 years of industry experience between them, our leaders understand the challenges facing America’s electrical infrastructure—and come equipped to solve them.
Founded in 2015 by a group of transformer industry veterans, Maddox has achieved exponential growth thanks to our amazing team delivering a reliable product.
We’re building a culture where every employee can thrive, find purpose, and work alongside a close-knit team. The result has been a one-of-a-kind employee experience.
Tired of long lead times and unresponsive customer service? Get your next transformer fast and hassle-free from Maddox's large portfolio of products.
Maddox is committed to serving electrical professionals from every field by sharing up-to-date industry news and high-quality technical information.
New to the industry? Learn everything you need to know about transformers here.
Stay updated on the latest projects.
What is the average lead time for a Maddox padmount transformer?
Maddox offers industry-best lead times. We stock units for same-day deliveries, remanufacture in 4–6 weeks, and can supply built-to-order new padmounts in under 20 weeks. Request a quote here for spec-specific lead times.
What is Maddox’s standard warranty for padmount transformers?
Maddox offers the industry’s best warranty for padmount transformers, covering new and remanufactured units for 3 years (with a 5 year option available). Find Maddox’s full padmount warranty here.
Are Maddox padmount transformers BABA compliant?
Maddox can supply your transformers to meet “Build America, Buy America” requirements. Ask for BABA in your quote and learn more about BABA here.
Can I rent a padmount transformer from Maddox?
Yes, you can rent a padmount from Maddox for temporary power. Find rental options here.
Does Maddox sell remanufactured padmount transformers?
Yes, Maddox sells both new and remanufactured padmounts. Learn more about remanufactured padmounts here.
Can Maddox supply a custom transformer to meet my spec?
Yes, Maddox supplies custom padmount transformers to spec, with the fastest lead times in the industry. Request a quote here to get pricing and lead times.
What are the dimensions and weights of Maddox’s padmount transformers?
Specific dimensions for Maddox padmount transformers vary by unit. Request a quote here to receive spec-specific dimensions.
How is shipping arranged for Maddox’s padmount transformers?
Maddox ships padmount transformers anywhere in North America, handling all logistics at no additional charge. Request a quote here to get pricing and lead times.
Can Maddox rewind my padmount transformer?
Yes, Maddox can rewind your padmount transformer. Request a rewind here.
What kVA sizes does Maddox offer for padmount transformers?
Maddox sells padmount transformers with base kVA ratings ranging from 30 to 10,000 kVA. Learn how to size your transformer here.
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