Company lists · Data refreshed November 2026

Top 25 Variable voltage transformers suppliers based in the United States

RevenueBase identified 109 company matches for variable voltage transformers suppliers associated with the United States as of November 2026 and tracks 3,017 professional contacts across them, including 981 with verified work emails. Houston is the largest hub.

This list covers company matches for variable voltage transformers suppliers associated with the United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 3, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list RevenueBase SmartSearch · Exact Recorded Nov 3, 2026 How this list was built
109Companies
3,017Contacts tracked
981Verified emails
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The 25 largest variable voltage transformers suppliers based in the United States

Ranked by team size
Top 25 of 109 company matches for variable voltage transformers suppliers based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 3, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchGreer, ID, United StatesHQ recorded Nov 3, 2026201-500311 contacts →

Exact match

“Maddox serves the commercial, industrial, utility, and renewables segments of the transformer market.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
2Exact matchCanonsburg, NC, United StatesHQ recorded Nov 3, 2026201-500192 contacts →

Exact match

“Pennsylvania Transformer Technology LLC (PTT) is a US-owned, industry leading manufacturer of a wide range of sizes and types of power transformers for the investor-owned…”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
3Exact matchBordentown, NJ, United StatesHQ recorded Nov 3, 2026201-500186 contacts →

Exact match

“NWL Inc.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
4Exact matchAthens, GA, United StatesHQ recorded Nov 3, 20261,001-5,000172 contacts →

Exact match

“Power Partners is a leading manufacturer of distribution transformers in North America.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
5Exact matchVernon, CA, United StatesHQ recorded Nov 3, 2026201-500131 contacts →

Exact match

“MGM Transformers is now part of Forgent Power Solutions.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
6Exact matchTorrance, PA, United StatesHQ recorded Nov 3, 20261,001-5,00097 contacts →

Exact match

“Welcome to Fortune Electric, a world class power transformer and switchgear manufacturer since 1969.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
7Exact matchWaco, TX, United StatesHQ recorded Nov 3, 202651-20087 contacts →

Exact match

“VanTran Transformers is now part of Forgent Power Solutions.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
8Exact matchRichmond, IL, United StatesHQ recorded Nov 3, 202651-20053 contacts →

Exact match

“75 Years of Engineering Excellence in the Delivered Worldwide Olsun Electrics is the industry’s most trusted partner for custom dry-type transformers.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
9Exact matchBurlington, NC, United StatesHQ recorded Nov 3, 202651-20051 contacts →

Exact match

“Southland Electrical Supply, An IPS Company, is a world class leader in Power Distribution and Low Voltage Motor Control.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
10Exact matchLake Park, FL, United StatesHQ recorded Nov 3, 202651-20048 contacts →

Exact match

“We collaborate with customers to deliver cost-effective, well-developed commercial transformer and industrial transformer solutions that meet unique specifications.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
11Exact matchJordan, MN, United StatesHQ recorded Nov 3, 202651-20043 contacts →

Exact match

“JORDAN TRANSFORMER's engineering and production team has 50 years of experience working for utilities and industrial customers on virtually all types of power transformers.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
12Exact matchColman, SD, United StatesHQ recorded Nov 3, 202651-20038 contacts →

Exact match

“T&R Electric Supply Company buys, sells, rents, and repairs distribution and power class transformers, along with medium and high voltage switchgear.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
13Exact matchMonroe, NC, United StatesHQ recorded Nov 3, 202651-20035 contacts →

Exact match

“ITEC, a MacLean Power Systems (MPS) company, specializes in the design and manufacture of dry and oil-filled transformers, ensuring the safety and reliability of electrical…”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
14Exact matchTemple, CO, United StatesHQ recorded Nov 3, 202651-20033 contacts →

Exact match

“Sunbelt Transformer is one of the world’s largest providers of new and reconditioned transformers and electrical equipment for commercial and industrial markets worldwide.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
15Exact matchSeneca, SC, United StatesHQ recorded Nov 3, 202611-5031 contacts →

Exact match

“CORE Transformers is the premier supplier of electrical distribution transformers for the commercial, industrial, renewable, and critical power markets.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
16Exact matchWytheville, VA, United StatesHQ recorded Nov 3, 202651-20031 contacts →

Exact match

“With nearly 40 years experience, AQ Transformer Solutions Inc.(AQTS) is the leading supplier of custom-built power magnetics components, such as transformers, reactors and filters.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
17Exact matchSterling, IL, United StatesHQ recorded Nov 3, 202651-20031 contacts →

Exact match

“For over 40 years, Micron has been the supplier of choice for original equipment manufacturers and control system builders around the world.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
18Exact matchGrand Haven, NH, United StatesHQ recorded Nov 3, 202651-20029 contacts →

Exact match

“Warner Power is now part of Grand Power Systems!”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
19Exact matchSan Antonio, TX, United StatesHQ recorded Nov 3, 202651-20027 contacts →

Exact match

“Alamo Transformer Supply Company (ATSCO) began operation in March of 1963 in San Antonio, Texas.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
20Exact matchGoodyear, AZ, United StatesHQ recorded Nov 3, 2026501-1,00026 contacts →

Exact match

“Jefferson Electric delivers precision-engineered transformer solutions trusted across industrial, commercial, and utility markets.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
21Exact matchPearland, TX, United StatesHQ recorded Nov 3, 202611-5023 contacts →

Exact match

“MARS Transformers, LLC is a veteran owned and operated company providing innovative high voltage service and equipment solutions to the energy industry worldwide.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
22Exact matchRoanoke, VA, United StatesHQ recorded Nov 3, 202651-20022 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
23Exact matchHouston, TX, United StatesHQ recorded Nov 3, 202611-5022 contacts →

Exact match

“Equisales provides domestic and international utilities, power plants and industrial customers with time-critical high voltage transformers and substation equipment while…”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
24Exact matchCommerce City, CO, United StatesHQ recorded Nov 3, 202611-5021 contacts →

Exact match

“At High to Low Voltage, we know that for electrical end-users, power downtime is not an option.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
25Exact matchNephi, UT, United StatesHQ recorded Nov 3, 20261-1021 contacts →

Exact match

“UTB is among the top dealers of liquid filled electrical transformers in the nation.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase

Showing 25 of 109 variable voltage transformers suppliers based in the United States

See the full list, filter by size, metro and specialty, and access 981 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Variable voltage transformers suppliers based in the United States at a glance

As of Nov 3, 2026
32.5%Verified-email coverage
27.7Average contacts per company
11-50Median size (employees)
9.2%Largest-city concentration · Houston
Nov 3, 2026Page data refreshed

Companies by employee count

1-10
37
11-50
35
51-200
22
201-500
7
501-1,000
4
1,001-5,000
4

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 109 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records associated with the United States whose business descriptions match “variable voltage transformers suppliers” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
Ranking
Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification
Every displayed company carries at least one verified work email. RevenueBase tracks 981 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh
This page's figures were pulled from the company graph on November 3, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “variable voltage transformers suppliers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many variable voltage transformers suppliers are there based in the United States?

RevenueBase identified 109 company matches for variable voltage transformers suppliers associated with the United States as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Maddox Industrial Transformer tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most variable voltage transformers suppliers?

Houston leads with 10 company records, followed by Canton (2) and Cincinnati (2).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 981 professional contacts with verified work emails tracked across these 109 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 3, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.