Company lists · Data refreshed October 2026

Top 25 Medium voltage equipment manufacturers based in the United States

RevenueBase identified 289 company matches for medium voltage equipment manufacturers associated with the United States as of October 2026 and tracks 21,825 professional contacts across them, including 7,244 with verified work emails. Houston is the largest hub.

This list covers company matches for medium voltage equipment 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 October 18, 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 18, 2026 How this list was built
289Companies
21,825Contacts tracked
7,244Verified emails
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The 25 largest medium voltage equipment manufacturers based in the United States

Ranked by team size
Top 25 of 289 company matches for medium voltage equipment manufacturers based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 18, 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 matchPullman, WA, United StatesHQ recorded Oct 18, 20265,001-10,0006,798 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 · Oct 18, 2026 · View company records in RevenueBase
2Exact matchHouston, TX, United StatesHQ recorded Oct 18, 20261,001-5,0002,646 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 · Oct 18, 2026 · View company records in RevenueBase
3Exact matchFremont, CA, United StatesHQ recorded Oct 18, 20261,001-5,0001,274 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 · Oct 18, 2026 · View company records in RevenueBase
4Exact matchColumbia, SC, United StatesHQ recorded Oct 18, 20261,001-5,0001,114 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 · Oct 18, 2026 · View company records in RevenueBase
5Exact matchWarrendale, PA, United StatesHQ recorded Oct 18, 20261,001-5,0001,014 contacts →

Exact match

“Mitsubishi Electric Power Products, Inc.(MEPPI) is a leading U.S.”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
6Exact matchEllisville, MS, United StatesHQ recorded Oct 18, 20261,001-5,000981 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 18, 2026 · View company records in RevenueBase
7Exact matchKansas City, MO, United StatesHQ recorded Oct 18, 2026501-1,000274 contacts →

Exact match

“Milbank provides the tools that empower life.”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
8Exact matchFontana, CA, United StatesHQ recorded Oct 18, 2026201-500263 contacts →

Exact match

“Crown Technical Systems, a Flex company, is headquartered in Fontana, California, with additional production and engineering facilities in Dallas, Texas, and Ontario, Canada.”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
9Exact matchIron Mountain, MI, United StatesHQ recorded Oct 18, 2026501-1,000242 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 · Oct 18, 2026 · View company records in RevenueBase
10Exact matchBristol, VA, United StatesHQ recorded Oct 18, 2026501-1,000197 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 · Oct 18, 2026 · View company records in RevenueBase
11Exact matchCanonsburg, PA, United StatesHQ recorded Oct 18, 2026201-500190 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 18, 2026 · View company records in RevenueBase
12Exact matchAthens, GA, United StatesHQ recorded Oct 18, 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 · Oct 18, 2026 · View company records in RevenueBase
13Exact matchSolomon, KS, United StatesHQ recorded Oct 18, 2026501-1,000163 contacts →

Exact match

“Solomon Corporation buys, sells, repairs, recycles, and disposes of transformers, regulators and reclosers.”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
14Exact matchPineville, LA, United StatesHQ recorded Oct 18, 202651-200160 contacts →

Exact match

“You needed that substation yesterday.”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
15Exact matchOklahoma City, OK, United StatesHQ recorded Oct 18, 2026201-500151 contacts →

Exact match

“In 2025, Southwest Electric Co.”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
16Exact matchTrafford, PA, United StatesHQ recorded Oct 18, 2026201-500144 contacts →

Exact match

“Cleaveland/Price is a engineering/manufacturing firm serving the needs of the electric power industry.”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
17Exact matchReading, PA, United StatesHQ recorded Oct 18, 202651-200132 contacts →

Exact match

“Substation Engineering Company (SECo), is a full service engineering and design firm with a dedicated team of experienced personnel providing a full range of cost effective…”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
18Exact matchWinneconne, WI, United StatesHQ recorded Oct 18, 2026201-500131 contacts →

Exact match

“At Switchgear Power Systems, we engineer and manufacture high quality, custom electrical power distribution equipment with speed, flexibility, and competitive pricing.”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
19Exact matchMemphis, TN, United StatesHQ recorded Oct 18, 2026201-500130 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
20Exact matchNorth Canton, OH, United StatesHQ recorded Oct 18, 20261,001-5,000126 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
21Exact matchLindon, UT, United StatesHQ recorded Oct 18, 202611-50123 contacts →

Exact match

“We believe electrical projects are complex enough.”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
22Exact matchCaldwell, ID, United StatesHQ recorded Oct 18, 20261,001-5,000120 contacts →

Exact match

“Mission Critical Group (MCG) stands apart as an end-to-end power systems and solutions provider, accelerating time-to-power in mission critical environments with unmatched speed…”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
23Exact matchAddison, TX, United StatesHQ recorded Oct 18, 202610001+113 contacts →

Exact match

“NOARK Electric is a global manufacturer and supplier of low, medium and high voltage electrical components for industrial and commercial applications.”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
24Exact matchMt. Prospect, IL, United StatesHQ recorded Oct 18, 202651-200113 contacts →

Exact match

“E-T-A Engineering Technology is the world’s leading manufacturer of circuit breakers for equipment and is the only resource for all circuit protection technologies: thermal…”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
25Exact matchHighland, IL, United StatesHQ recorded Oct 18, 2026501-1,000112 contacts →

Exact match

“In 2025, Basler Electric Company was acquired by Littelfuse, Inc, a global, diversified industrial technology manufacturing company dedicated to creating a sustainable, connected…”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase

Showing 25 of 289 medium voltage equipment manufacturers based in the United States

See the full list, filter by size, metro and specialty, and access 7,244 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Medium voltage equipment manufacturers based in the United States at a glance

As of Oct 18, 2026
33.2%Verified-email coverage
75.5Average contacts per company
11-50Median size (employees)
4.8%Largest-city concentration · Houston
Oct 18, 2026Page data refreshed

Companies by employee count

1-10
86
11-50
91
51-200
64
201-500
19
501-1,000
11
1,001-5,000
15
5,001-10,000
2
10001+
1

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 289 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 “medium voltage equipment 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 7,244 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 18, 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 “medium voltage equipment manufacturers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many medium voltage equipment manufacturers are there based in the United States?

RevenueBase identified 289 company matches for medium voltage equipment manufacturers 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?

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 medium voltage equipment manufacturers?

Houston leads with 14 company records, followed by Charlotte (4) and Bristol (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 7,244 professional contacts with verified work emails tracked across these 289 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 18, 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.