Company lists · Data refreshed September 2026
Top 25 Protection and control software companies based in the United States
RevenueBase identified 197 protection and control software companies headquartered in the United States as of September 2026 and tracks 36,065 professional contacts across them, including 12,911 with verified work emails. Houston is the largest hub.
This list covers protection and control software companies 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 29, 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.
The 25 largest protection and control software companies based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 20,582 contacts → | ||||
Indirect evidence “At Rockwell Automation, we connect the imaginations of people with the potential of technology to expand what is humanly possible, making the world more intelligent, more…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 2 | 6,489 contacts → | ||||
Indirect 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 29, 2026Thanks. The Data Team will review it. | |||||
| 3 | 627 contacts → | ||||
Partial evidence “nVent HOFFMAN leading designer and manufacturer of systems that safely and reliably protect the electronic controls and mission critical electrical systems in industrial, data…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 4 | 619 contacts → | ||||
Indirect evidence “Doble is the world’s most trusted brand in electrical diagnostics.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 5 | 511 contacts → | ||||
Indirect evidence “RESA Power is your ONE-STOP for all of your power needs.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 6 | 494 contacts → | ||||
Indirect evidence “Qualitrol is a global leader in electrical grid monitoring solutions for businesses that manage, operate, or support the power grid.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 7 | 468 contacts → | ||||
Indirect evidence “ASCO Power Technologies has provided power reliability solutions for more than 125 years.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 8 | 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 29, 2026Thanks. The Data Team will review it. | |||||
| 9 | 240 contacts → | ||||
Strong 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 29, 2026Thanks. The Data Team will review it. | |||||
| 10 | 221 contacts → | ||||
Partial 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 29, 2026Thanks. The Data Team will review it. | |||||
| 11 | 188 contacts → | ||||
Indirect evidence “Expanse Electrical Company is a premier provider of integrated electrical infrastructure, instrumentation and automation system solutions.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 12 | 180 contacts → | ||||
Partial evidence “Applied Control comes alongside you as a partner who understands your plant, your processes, and the pressure you face to deliver performance without interruption.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 13 | 161 contacts → | ||||
Partial evidence “AA Electric is your single source for machine control and automation specialty electrical products.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 14 | 153 contacts → | ||||
Indirect evidence “NovaTech Automation produces the easiest to use and best supported automation products and solutions for electric utilities.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 15 | 147 contacts → | ||||
Indirect evidence “Follow us to discover company developments, our energy clients' successes and employment opportunities.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 16 | 145 contacts → | ||||
Indirect evidence “Cleaveland/Price is a engineering/manufacturing firm serving the needs of the electric power industry.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 17 | 143 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 18 | 139 contacts → | ||||
Partial evidence “Gridware is a technology company focused on protecting and enhancing the electrical grid.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 19 | 134 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 20 | 107 contacts → | ||||
Indirect evidence “Explore the ways the Ovation™ Automation Platform and Ovation Green renewable solutions remove data silos to provide a holistic operational view that helps utilities meet the…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 21 | 104 contacts → | ||||
Indirect evidence “In 2025, Basler Electric Company was acquired by Littelfuse, Inc, a global, diversified industrial technology manufacturing company dedicated to creating a sustainable, connected…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 22 | 103 contacts → | ||||
Partial evidence “Dynamic Ratings is dedicated to providing monitoring, control, and communication solutions for electrical apparatus.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 23 | 93 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 24 | 74 contacts → | ||||
Indirect evidence “Automation-X, Inc.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 25 | 73 contacts → | ||||
Partial evidence “Millennium Control Systems is a member of the Grenzebach Group and part of a global network to meet the world’s all-time high demand for power distribution and automation.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
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: protection and control software companies. 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 protection and control software companies.
- Partial evidence
- Its own public description names part of protection and control software companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name protection and control software companies. 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 197 protection and control software companies based in the United States
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Protection and control software companies based in the United States at a glance
As of Sep 29, 2026Companies by employee count
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 197 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 protection and control software companies, 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 “protection and control software companies”. 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 protection and control software companies), 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 protection and control software companies, 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, 12,911 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 29, 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 protection and control software companies, 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 protection and control software companies are there based in the United States?
RevenueBase identified 197 protection and control software companies 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?
Rockwell Automation, headquartered in Milwaukee, tops this list with the largest team on record.
Which city has the most protection and control software companies?
Houston leads with 13 headquartered companies, followed by Atlanta (4) and Austin (3).
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 12,911 verified decision-maker contacts tracked across these 197 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 29, 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 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.
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