Company lists · Data refreshed October 2026

Top 25 Autotransformers suppliers based in the United States

Name: Autotransformers suppliers based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Oct 22, 2026 148 companies tracked

RevenueBase identified 148 company matches for autotransformers suppliers associated with the United States as of October 2026 and tracks 3,900 professional contacts across them, including 897 with verified work emails. Houston is the largest hub.

This list covers company matches for autotransformers 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 October 22, 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 Oct 22, 2026 How this list was built

148Companies

3,900Contacts tracked

897Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest autotransformers suppliers based in the United States

Ranked by team size

Top 25 of 148 company matches for autotransformers suppliers based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 22, 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.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Howard Industries	Exact match	Ellisville, MS, United StatesHQ recorded Oct 22, 2026	1,001-5,000	981 contacts →
	Exact match “Howard Industries is the leading manufacturer of liquid-filled distribution transformers for the utility and commercial/industrial markets.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
2	Maddox Industrial Transformer	Exact match	Greer, SC, United StatesHQ recorded Oct 22, 2026	201-500	306 contacts →
	Exact match “Maddox serves the commercial, industrial, utility, and renewables segments of the transformer market.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
3	HD Hyundai Power Transformers Usa, INC	Exact match	Montgomery, AL, United StatesHQ recorded Oct 22, 2026	201-500	209 contacts →
	Exact match “HD Hyundai Power Transformers USA, Inc, a subsidiary of HD Hyundai Electric Systems, stands as a premier transformer manufacturer located in Montgomery, Alabama.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
4	Pennsylvania Transformer Technology LLC PTT	Exact match	Canonsburg, PA, United StatesHQ recorded Oct 22, 2026	201-500	190 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 · Oct 22, 2026 · View company records in RevenueBase
5	Southwest Electric CO	Exact match	Oklahoma City, OK, United StatesHQ recorded Oct 22, 2026	201-500	151 contacts →
	Exact match “In 2025, Southwest Electric Co.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
6	JST Power Equipment	Exact match	Lake Mary, FL, United StatesHQ recorded Oct 22, 2026	201-500	149 contacts →
	Exact match “At JST Power Equipment, we pride ourselves on delivering world-class transformer and electrical equipment solutions.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
7	Hyosung Hico LTD	Exact match	Memphis, TN, United StatesHQ recorded Oct 22, 2026	201-500	130 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
8	MGM Transformers	Exact match	Vernon, CA, United StatesHQ recorded Oct 22, 2026	201-500	128 contacts →
	Exact match “MGM Transformers is now part of Forgent Power Solutions.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
9	Vantran Transformers	Exact match	Waco, TX, United StatesHQ recorded Oct 22, 2026	51-200	85 contacts →
	Exact match “VanTran Transformers is now part of Forgent Power Solutions.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
10	Fortune Electric	Exact match	Torrance, CA, United StatesHQ recorded Oct 22, 2026	1,001-5,000	85 contacts →
	Exact match “Welcome to Fortune Electric, a world class power transformer and switchgear manufacturer since 1969.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
11	Olsun Electrics Corporation	Exact match	Richmond, IL, United StatesHQ recorded Oct 22, 2026	51-200	52 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 · Oct 22, 2026 · View company records in RevenueBase
12	Meta Power Solutions	Exact match	Lake Park, FL, United StatesHQ recorded Oct 22, 2026	51-200	47 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 · Oct 22, 2026 · View company records in RevenueBase
13	Jordan Transformer LLC	Exact match	Jordan, MN, United StatesHQ recorded Oct 22, 2026	51-200	42 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 · Oct 22, 2026 · View company records in RevenueBase
14	T & R Electric Supply Co., INC	Exact match	Colman, SD, United StatesHQ recorded Oct 22, 2026	51-200	36 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 · Oct 22, 2026 · View company records in RevenueBase
15	Sunbelt Transformer	Exact match	Temple, TX, United StatesHQ recorded Oct 22, 2026	51-200	32 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 · Oct 22, 2026 · View company records in RevenueBase
16	Micron Industries Corporation	Exact match	Sterling, IL, United StatesHQ recorded Oct 22, 2026	51-200	31 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 · Oct 22, 2026 · View company records in RevenueBase
17	Global Power Products	Exact match	Lawrenceville, GA, United StatesHQ recorded Oct 22, 2026	51-200	30 contacts →
	Exact match “Established in 1995, we expanded in 2001 and are continually growing and developing to deliver accurate, user-friendly, and affordable products to meet consumer needs.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
18	Core Transformers	Exact match	Seneca, SC, United StatesHQ recorded Oct 22, 2026	11-50	30 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 · Oct 22, 2026 · View company records in RevenueBase
19	SAG Harbor Industries	Exact match	Sag Harbor, NY, United StatesHQ recorded Oct 22, 2026	51-200	30 contacts →
	Exact match “Electric coil and transformer manufacturer.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
20	Quality Transformer And Electronics	Exact match	Milpitas, CA, United StatesHQ recorded Oct 22, 2026	51-200	30 contacts →
	Exact match “Quality Transformer and Electronics designs and manufactures custom transformers, inductors, reactors and electrictronic assemblies.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
21	Instrument Transformer Equipment Corporation	Exact match	Monroe, NC, United StatesHQ recorded Oct 22, 2026	51-200	29 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 · Oct 22, 2026 · View company records in RevenueBase
22	AQ Transformer Solutions INC	Exact match	Wytheville, VA, United StatesHQ recorded Oct 22, 2026	51-200	28 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 · Oct 22, 2026 · View company records in RevenueBase
23	Warner Power	Exact match	Grand Haven, MI, United StatesHQ recorded Oct 22, 2026	51-200	28 contacts →
	Exact match “Warner Power is now part of Grand Power Systems!” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
24	Amran Instrument Transformers	Exact match	Sugar Land, TX, United StatesHQ recorded Oct 22, 2026	201-500	27 contacts →
	Exact match “Amran Instrument Transformers is a leading manufacturer of Low Voltage and Medium Voltage Instrument Transformers (Current and Voltage Transformers) with multiple manufacturing…” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
25	Pacific Transformer	Exact match	Anaheim, CA, United StatesHQ recorded Oct 22, 2026	51-200	26 contacts →
	Exact match “Since 1981, Pacific Transformer has remained a market leader in the field of custom transformers, magnetic engineering, and power transformer design.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “autotransformers suppliers”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 148 autotransformers suppliers based in the United States

See the full list, filter by size, metro and specialty, and access 897 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

Autotransformers suppliers based in the United States at a glance

As of Oct 22, 2026

23.0%Verified-email coverage

26.4Average contacts per company

11-50Median size (employees)

5.4%Largest-city concentration · Houston

Oct 22, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

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 148 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 “autotransformers 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 897 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 October 22, 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 “autotransformers suppliers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many autotransformers suppliers are there based in the United States?

RevenueBase identified 148 company matches for autotransformers suppliers associated with the United States as of October 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?

Howard Industries tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most autotransformers suppliers?

Houston leads with 8 company records, followed by Anaheim (3) and Grand Haven (3).

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 897 professional contacts with verified work emails tracked across these 148 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 October 22, 2026.

Ready to reach these companies? Verified emails and direct dials for all 148 autotransformers suppliers based in the United States. Start with a free account, no credit card.

Download this list →

Related lists

Autotransformers suppliers by geography

Browse the directory

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.