Company lists · Data refreshed September 2026

Top 25 Industrial transformer manufacturers based in the United States

Name: Industrial transformer manufacturers based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 515 companies tracked

RevenueBase identified 515 company matches for industrial transformer manufacturers associated with the United States as of September 2026 and tracks 39,257 professional contacts across them, including 14,833 with verified work emails. Houston is the largest hub.

This list covers company matches for industrial transformer manufacturers 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 September 17, 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 Sep 17, 2026 How this list was built

515Companies

39,257Contacts tracked

14,833Verified emails

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The 25 largest industrial transformer manufacturers based in the United States

Ranked by team size

Top 25 of 515 company matches for industrial transformer manufacturers based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 17, 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	Schweitzer Engineering Laboratories SEL	Exact match	Pullman, WA, United StatesHQ recorded Sep 17, 2026	5,001-10,000	6,489 contacts →
	Exact match “SEL is a globally recognized designer and manufacturer of products and solutions that make electric power safer, more reliable, and more economical.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
2	Littelfuse	Exact match	Rosemont, IL, United StatesHQ recorded Sep 17, 2026	10001+	4,259 contacts →
	Exact match “Littelfuse, Inc.(NASDAQ: LFUS) is a diversified, industrial technology manufacturing company shaping solutions for the safe and efficient transfer of electrical energy.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
3	Hubbell Incorporated	Exact match	Shelton, CT, United StatesHQ recorded Sep 17, 2026	10001+	4,053 contacts →
	Exact match “Hubbell Incorporated is a leading manufacturer of utility and electrical solutions that help build more reliable, resilient, and renewable energy infrastructure.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
4	Powell	Exact match	Houston, TX, United StatesHQ recorded Sep 17, 2026	1,001-5,000	2,561 contacts →
	Exact match “Powell is hiring- Powell is dedicated to improving people’s lives by providing reliable power distribution systems in every market we serve.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
5	Hubbell Power Systems	Exact match	Columbia, SC, United StatesHQ recorded Sep 17, 2026	1,001-5,000	1,079 contacts →
	Exact match “Hubbell Power Systems (HPS) designs and manufactures a wide variety of electric power transmission, distribution, substation, underground, OEM, and communications products used by…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
6	Industrial Electric Mfg. IEM	Exact match	Fremont, CA, United StatesHQ recorded Sep 17, 2026	1,001-5,000	969 contacts →
	Exact match “Industrial Electric Mfg.(IEM) is the largest independent full-line manufacturer of electrical distribution equipment and integrated power systems in the U.S.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
7	Mitsubishi Electric Power Products, INC	Exact match	Warrendale, PA, United StatesHQ recorded Sep 17, 2026	1,001-5,000	967 contacts →
	Exact match “Mitsubishi Electric Power Products, Inc.(MEPPI) is a leading U.S.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
8	Howard Industries	Exact match	Ellisville, MS, United StatesHQ recorded Sep 17, 2026	1,001-5,000	941 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 · Sep 17, 2026 · View company records in RevenueBase
9	Dashiell Corporation	Exact match	Houston, TX, United StatesHQ recorded Sep 17, 2026	1,001-5,000	940 contacts →
	Exact match “Dashiell is a leading national provider of technical services to the electric utility, power generation, industrial, renewable and energy industries.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
10	SAE Towers	Exact match	Houston, TX, United StatesHQ recorded Sep 17, 2026	1,001-5,000	928 contacts →
	Exact match “SAE Towers is one of the world’s largest producers of steel lattice towers for high-voltage power transmission.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
11	Electrical Consultants, INC	Exact match	Billings, MT, United StatesHQ recorded Sep 17, 2026	1,001-5,000	890 contacts →
	Exact match “Electrical Consultants, Inc.(ECI) is an employee-owned, national provider of high voltage transmission, substation, and distribution solutions.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
12	Virginia Transformer Corp	Exact match	Roanoke, VA, United StatesHQ recorded Sep 17, 2026	5,001-10,000	792 contacts →
	Exact match “Virginia Transformer is an engineering company that manufactures transformers.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
13	Flanders	Exact match	Evansville, IN, United StatesHQ recorded Sep 17, 2026	501-1,000	789 contacts →
	Exact match “FLANDERS, Leverage our legacy.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
14	Wholesale Electric Supply Co. Of Houston, INC	Exact match	Houston, TX, United StatesHQ recorded Sep 17, 2026	501-1,000	544 contacts →
	Exact match “Wholesale Electric Supply Company of Houston, Inc.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
15	Tdk-Lambda Americas	Exact match	Neptune, NJ, United StatesHQ recorded Sep 17, 2026	201-500	540 contacts →
	Exact match “TDK-Lambda Corporation, a group company of TDK Corporation, is a recognized leader and global supplier of power conversion products for industrial and medical equipment worldwide.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
16	Ermco-Eci	Exact match	Dyersburg, TN, United StatesHQ recorded Sep 17, 2026	1,001-5,000	520 contacts →
	Exact match “ERMCO (Electric Research and Manufacturing Cooperative, Inc.) is headquartered in Dyersburg, Tennessee.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
17	Marathon Electric Motors And Generators	Exact match	Wausau, WI, United StatesHQ recorded Sep 17, 2026	1,001-5,000	295 contacts →
	Exact match “Marathon® has a history of over 110 years of making Motors & Generators.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
18	Maddox Industrial Transformer	Exact match	Greer, SC, United StatesHQ recorded Sep 17, 2026	201-500	286 contacts →
	Exact match “Maddox serves the commercial, industrial, utility, and renewables segments of the transformer market.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
19	Asplundh Engineering Services	Exact match	Willow Grove, PA, United StatesHQ recorded Sep 17, 2026	1,001-5,000	284 contacts →
	Exact match “Asplundh Engineering Services leverages more than 100 years of experience to provide a superior, single-point solution for engineering, design and testing services to…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
20	Milbank Energy At Work	Exact match	Kansas City, MO, United StatesHQ recorded Sep 17, 2026	501-1,000	266 contacts →
	Exact match “Milbank provides the tools that empower life.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
21	Systems Control	Exact match	Iron Mountain, MI, United StatesHQ recorded Sep 17, 2026	501-1,000	240 contacts →
	Exact match “Systems Control, a Hubbell brand, designs and manufactures turnkey control systems and control relays that are involved in the protection and control of transmission and…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
22	Electro-Mechanical	Exact match	Bristol, VA, United StatesHQ recorded Sep 17, 2026	501-1,000	221 contacts →
	Exact match “Electro-Mechanical, LLC is a global leader in developing and manufacturing technologies used for electrical power distribution switching, power quality and power protection…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
23	Intermountain Electronics	Exact match	Price, UT, United StatesHQ recorded Sep 17, 2026	501-1,000	208 contacts →
	Exact match “IE provides custom-engineered, packaged equipment to industrial markets.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
24	HD Hyundai Power Transformers Usa, INC	Exact match	Montgomery, AL, United StatesHQ recorded Sep 17, 2026	201-500	202 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 · Sep 17, 2026 · View company records in RevenueBase
25	Expanse Electrical CO	Exact match	Houston, TX, United StatesHQ recorded Sep 17, 2026	501-1,000	188 contacts →
	Exact match “Expanse Electrical Company is a premier provider of integrated electrical infrastructure, instrumentation and automation system solutions.” Recorded in the RevenueBase company graph · Sep 17, 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 “industrial transformer manufacturers”. 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 515 industrial transformer manufacturers based in the United States

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Industrial transformer manufacturers based in the United States at a glance

As of Sep 17, 2026

37.8%Verified-email coverage

76.2Average contacts per company

11-50Median size (employees)

5.6%Largest-city concentration · Houston

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

151

11-50

153

51-200

109

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

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 515 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 “industrial transformer manufacturers” 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 14,833 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 September 17, 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 “industrial transformer manufacturers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many industrial transformer manufacturers are there based in the United States?

RevenueBase identified 515 company matches for industrial transformer manufacturers associated with the United States as of September 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?

Schweitzer Engineering Laboratories SEL tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most industrial transformer manufacturers?

Houston leads with 29 company records, followed by Miami (5) and New York (5).

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 14,833 professional contacts with verified work emails tracked across these 515 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 September 17, 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.