Company lists · Data refreshed September 2026

Top 25 Switchgear manufacturers based in the United States

Name: Switchgear 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 18, 2026 506 companies tracked

RevenueBase identified 506 switchgear manufacturers headquartered in the United States as of September 2026 and tracks 22,112 professional contacts across them, including 7,433 with verified work emails. Houston is the largest hub.

This list covers switchgear manufacturers headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 18, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 18, 2026 86% judged on-target in blind review

506Companies

22,112Contacts tracked

7,433Verified emails

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

The 25 largest switchgear manufacturers based in the United States

Ranked by team size

Top 25 of 506 switchgear manufacturers based in the United States, ranked by team size, largest first. Data refreshed Sep 18, 2026. RevenueBase Smart Search rates how each company's information relates to switchgear manufacturers: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Schweitzer Engineering Laboratories SEL	Partial evidence	Pullman, WA, United StatesHQ checked Sep 18, 2026	5,001-10,000	6,489 contacts →
	Partial evidence “SEL is a globally recognized designer and manufacturer of products and solutions that make electric power safer, more reliable, and more economical.” Source: RevenueBase Database · checked Sep 18, 2026
2	Powell	Indirect evidence	Houston, TX, United StatesHQ checked Sep 18, 2026	1,001-5,000	2,561 contacts →
	Indirect evidence “Powell is hiring- Powell is dedicated to improving people’s lives by providing reliable power distribution systems in every market we serve.” Source: RevenueBase Database · checked Sep 18, 2026
3	Industrial Electric Mfg. IEM	Partial evidence	Fremont, CA, United StatesHQ checked Sep 18, 2026	1,001-5,000	969 contacts →
	Partial evidence “Industrial Electric Mfg.(IEM) is the largest independent full-line manufacturer of electrical distribution equipment and integrated power systems in the U.S.” Source: RevenueBase Database · checked Sep 18, 2026
4	Mitsubishi Electric Power Products, INC	Indirect evidence	Warrendale, PA, United StatesHQ checked Sep 18, 2026	1,001-5,000	967 contacts →
	Indirect evidence “Mitsubishi Electric Power Products, Inc.(MEPPI) is a leading U.S.” Source: RevenueBase Database · checked Sep 18, 2026
5	Asco Power Technologies	Indirect evidence	Florham Park, NJ, United StatesHQ checked Sep 18, 2026	1,001-5,000	468 contacts →
	Indirect evidence “ASCO Power Technologies has provided power reliability solutions for more than 125 years.” Source: RevenueBase Database · checked Sep 18, 2026
6	Marathon Electric Motors And Generators	Indirect evidence	Wausau, WI, United StatesHQ checked Sep 18, 2026	1,001-5,000	295 contacts →
	Indirect evidence “Marathon® has a history of over 110 years of making Motors & Generators.” Source: RevenueBase Database · checked Sep 18, 2026
7	Milbank Energy At Work	Indirect evidence	Kansas City, MO, United StatesHQ checked Sep 18, 2026	501-1,000	266 contacts →
	Indirect evidence “Milbank provides the tools that empower life.” Source: RevenueBase Database · checked Sep 18, 2026
8	Crown Technical Systems	Indirect evidence	Fontana, CA, United StatesHQ checked Sep 18, 2026	201-500	241 contacts →
	Indirect evidence “Crown Technical Systems, a Flex company, is headquartered in Fontana, California, with additional production and engineering facilities in Dallas, Texas, and Ontario, Canada.” Source: RevenueBase Database · checked Sep 18, 2026
9	Systems Control	Partial evidence	Iron Mountain, MI, United StatesHQ checked Sep 18, 2026	501-1,000	240 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 18, 2026
10	Electro-Mechanical	Indirect evidence	Bristol, VA, United StatesHQ checked Sep 18, 2026	501-1,000	221 contacts →
	Indirect evidence “Electro-Mechanical, LLC is a global leader in developing and manufacturing technologies used for electrical power distribution switching, power quality and power protection…” Source: RevenueBase Database · checked Sep 18, 2026
11	Carling Technologies	Indirect evidence	Plainville, CT, United StatesHQ checked Sep 18, 2026	1,001-5,000	217 contacts →
	Indirect evidence “As a global leader in circuit protection, switching, and power distribution, Carling Technologies, a Littelfuse brand, is dedicated to developing modern, innovative solutions that…” Source: RevenueBase Database · checked Sep 18, 2026
12	Russelectric, A Siemens Business	Indirect evidence	Hingham, MA, United StatesHQ checked Sep 18, 2026	201-500	193 contacts →
	Indirect evidence “Founded in 1955, Russelectric®, A Siemens Business, provides high-integrity power control solutions for mission critical applications in the healthcare, information technology…” Source: RevenueBase Database · checked Sep 18, 2026
13	Leach International Corporation	Partial evidence	Buena Park, CA, United StatesHQ checked Sep 18, 2026	501-1,000	182 contacts →
	Partial evidence “Leach International Corporation designs and manufactures a broad range of high-reliable power switching and control components and equipment for aerospace, ground vehicle, rail…” Source: RevenueBase Database · checked Sep 18, 2026
14	Pennsylvania Transformer Technology LLC PTT	Partial evidence	Canonsburg, PA, United StatesHQ checked Sep 18, 2026	201-500	169 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 18, 2026
15	Solomon Corporation	Indirect evidence	Solomon, KS, United StatesHQ checked Sep 18, 2026	501-1,000	157 contacts →
	Indirect evidence “Solomon Corporation buys, sells, repairs, recycles, and disposes of transformers, regulators and reclosers.” Source: RevenueBase Database · checked Sep 18, 2026
16	Esterline Power Systems	Partial evidence	Buena Park, CA, United StatesHQ checked Sep 18, 2026	1,001-5,000	154 contacts →
	Partial evidence “Esterline Power Systems (Leach International) designs and manufactures a broad range of high-reliable power switching assemblies, relays, and control components and equipment for…” Source: RevenueBase Database · checked Sep 18, 2026
17	MGM Transformers	Indirect evidence	Vernon, CA, United StatesHQ checked Sep 18, 2026	201-500	147 contacts →
	Indirect evidence “MGM Transformers is now part of Forgent Power Solutions.” Source: RevenueBase Database · checked Sep 18, 2026
18	Cleaveland Price INC	Indirect evidence	Trafford, PA, United StatesHQ checked Sep 18, 2026	201-500	145 contacts →
	Indirect evidence “Cleaveland/Price is a engineering/manufacturing firm serving the needs of the electric power industry.” Source: RevenueBase Database · checked Sep 18, 2026
19	Southwest Electric CO	Indirect evidence	Oklahoma City, OK, United StatesHQ checked Sep 18, 2026	201-500	145 contacts →
	Indirect evidence “In 2025, Southwest Electric Co.” Source: RevenueBase Database · checked Sep 18, 2026
20	JTS	Indirect evidence	Caldwell, ID, United StatesHQ checked Sep 18, 2026	1,001-5,000	136 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 18, 2026
21	Switchgear Power Systems	Strong evidence	Winneconne, WI, United StatesHQ checked Sep 18, 2026	201-500	126 contacts →
	Strong evidence “At Switchgear Power Systems, we engineer and manufacture high quality, custom electrical power distribution equipment with speed, flexibility, and competitive pricing.” Source: RevenueBase Database · checked Sep 18, 2026
22	Myers Power Products, INC	Indirect evidence	North Canton, OH, United StatesHQ checked Sep 18, 2026	1,001-5,000	124 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 18, 2026
23	Electroswitch	Indirect evidence	Weymouth, MA, United StatesHQ checked Sep 18, 2026	51-200	118 contacts →
	Indirect evidence “Electroswitch, founded in 1946 as a supplier of rugged high quality switches to the defense industry, has grown over the years through a series of innovative product design…” Source: RevenueBase Database · checked Sep 18, 2026
24	E-T-A Engineering Technology	Partial evidence	Mt. Prospect, IL, United StatesHQ checked Sep 18, 2026	51-200	111 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 18, 2026
25	ESL Power Systems, INC	Partial evidence	Corona, CA, United StatesHQ checked Sep 18, 2026	51-200	108 contacts →
	Partial evidence “As a leading electrical manufacturer of safety-interlocked, cord-connected solutions since 1995, ESL Power Systems, Inc.” Source: RevenueBase Database · checked Sep 18, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: switchgear manufacturers. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names switchgear manufacturers.
Partial evidence: Its own public description names part of switchgear manufacturers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name switchgear manufacturers. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 506 switchgear manufacturers based in the United States

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 7,433 reachable decision-makers.

Free signup · no credit card

View the full list →

Switchgear manufacturers based in the United States at a glance

As of Sep 18, 2026

33.6%Verified-email coverage

43.7Average contacts per company

11-50Median size (employees)

4.2%Largest-city concentration · Houston

Sep 18, 2026Page data refreshed

Companies by employee count

1-10

162

11-50

185

51-200

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 506 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among switchgear manufacturers, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in the United States whose own description of what they do matches “switchgear manufacturers”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names switchgear manufacturers), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among switchgear manufacturers, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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 listed company carries at least one verified work email, 7,433 across the full list. 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 18, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names switchgear manufacturers, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many switchgear manufacturers are there based in the United States?

RevenueBase identified 506 switchgear manufacturers headquartered in the United States as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Schweitzer Engineering Laboratories SEL, headquartered in Pullman, tops this list with the largest team on record.

Which city has the most switchgear manufacturers?

Houston leads with 21 headquartered companies, followed by Charlotte (5) and Los Angeles (5).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 7,433 verified decision-maker contacts tracked across these 506 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 18, 2026.

Ready to reach these companies? Verified emails and direct dials for all 506 switchgear manufacturers based in the United States. Start with a free account, no credit card.

Download this list →

Related lists

Switchgear manufacturers by geography

Browse the directory

Browse: Companies home · All United States lists · All Switchgear manufacturers lists · New lists

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 Smart Search, 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.