Company lists · Data refreshed November 2026
Top 17 Relay testing companies based in the United States
RevenueBase identified 44 company matches for relay testing companies associated with the United States as of November 2026 and tracks 1,181 professional contacts across them, including 185 with verified work emails. Concord is the largest hub.
This list covers company matches for relay testing companies 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 November 6, 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.
The 17 largest relay testing companies based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 678 contacts → | ||||
Exact match “Electric Power Systems is an independent electrical testing & engineering organization.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 2 | 56 contacts → | ||||
Exact match “Welcome to Telex.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 3 | 41 contacts → | ||||
Exact match “Song Chuan is a world class manufacturer of power electromechanical relays with over 50 years of experience.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 4 | 41 contacts → | ||||
Exact match “EPST is a NETA Certified, Independent Electrical Testing & Engineering Organization.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 5 | 35 contacts → | ||||
Exact match “Applus Keystone+ specializes in streamlining the burden of regulatory compliance testing.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 6 | 34 contacts → | ||||
Exact match “AEA is the premier value-added innovator in the electrical power distribution industry.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 7 | 33 contacts → | ||||
Exact match “CIT Relay & Switch, located in greater Minneapolis, MN, is a designer and manufacturer of quality Electromechanical Relays, Solid State Relays and Electromechanical Switches.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 8 | 21 contacts → | ||||
Exact match “CAMCO is an independent testing and repair facility.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 9 | 16 contacts → | ||||
Exact match “Electrical testing of Electrical Components” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 10 | 16 contacts → | ||||
Exact match “Transformer Services Inc.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 11 | 16 contacts → | ||||
Exact match “Established in 1923, Struthers-Dunn is one of the oldest and most respected relay manufacturers in the world.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 12 | 12 contacts → | ||||
Exact match “Your safety is our concern.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 13 | 8 contacts → | ||||
Exact match “With over 100 years of combined experience, P&C Prime has the ability to test and commission the protection and control systems in your substation or generating station.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 14 | 3 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 15 | 2 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 16 | 2 contacts → | ||||
Exact match “Providing third party electrical protection testing and commissioning services.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 17 | 2 contacts → | ||||
Exact match “BlueGate PCA (Protection, Control, and Automation) is an electrical testing & commissioning company serving the industrial, commercial, utility, and renewable sectors.” Recorded in the RevenueBase company graph · Nov 6, 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 “relay testing companies”. 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 17 of 44 relay testing companies based in the United States
See the full list, filter by size, metro and specialty, and access 185 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Relay testing companies based in the United States at a glance
As of Nov 6, 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 44 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 “relay testing companies” 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 185 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 November 6, 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 “relay testing companies”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many relay testing companies are there based in the United States?
RevenueBase identified 44 company matches for relay testing companies associated with the United States as of November 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?
Electric Power Systems tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most relay testing companies?
Concord leads with 2 company records, followed by Durham (2) and Houston (2).
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 185 professional contacts with verified work emails tracked across these 44 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 November 6, 2026.
Ready to reach these companies? Verified emails and direct dials for all 44 relay testing companies based in the United States. Start with a free account, no credit card.
Download this list →Related lists
Relay testing companies by geography
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.
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Relay testing companies based in India
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- Manufacturing companies based in the United States
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Company intelligence · public preview
Top 17 relay testing companies based in the United States
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 44 matching company records for relay testing companies based in the United States, with 1,181 tracked contacts and 185 verified work emails.
This public preview shows 17 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: November 6, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 17 relay testing companies based in the United States
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 |  Electric Power Systemsvoltyx.comHQ: Maryland Heights, MI, United StatesReported employees: 501-1,000 | Maryland Heights, MI, United States | 501-1,000 | Exact match | 678 contacts → |
“Electric Power Systems is an independent electrical testing & engineering organization.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Telex LLCtelexllc.comHQ: Fayetteville, AR, United StatesReported employees: 51-200 | Fayetteville, AR, United States | 51-200 | Exact match | 56 contacts → |
“Welcome to Telex.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Song Chuan Precision Groupsongchuanusa.comHQ: Pompano Beach, FL, United StatesReported employees: 11-50 | Pompano Beach, FL, United States | 11-50 | Exact match | 41 contacts → |
“Song Chuan is a world class manufacturer of power electromechanical relays with over 50 years of experience.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  EPS Technologyeps-technology.comHQ: Durham, CT, United StatesReported employees: 51-200 | Durham, CT, United States | 51-200 | Exact match | 41 contacts → |
“EPST is a NETA Certified, Independent Electrical Testing & Engineering Organization.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Applus Keystonekeystonecompliance.comHQ: New Castle, NC, United StatesReported employees: 11-50 | New Castle, NC, United States | 11-50 | Exact match | 35 contacts → |
“Applus Keystone+ specializes in streamlining the burden of regulatory compliance testing.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Arizona Electrical Apparatus, INCaeacircuitbreakers.comHQ: Tucson, AZ, United StatesReported employees: 51-200 | Tucson, AZ, United States | 51-200 | Exact match | 34 contacts → |
“AEA is the premier value-added innovator in the electrical power distribution industry.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  CIT Relay & Switchcitrelay.comHQ: Rogers, MN, United StatesReported employees: 501-1,000 | Rogers, MN, United States | 501-1,000 | Exact match | 33 contacts → |
“CIT Relay & Switch, located in greater Minneapolis, MN, is a designer and manufacturer of quality Electromechanical Relays, Solid State Relays and Electromechanical Switches.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  ARM Camcoarmcamco.netHQ: Ebensburg, PA, United StatesReported employees: 51-200 | Ebensburg, PA, United States | 51-200 | Exact match | 21 contacts → |
“CAMCO is an independent testing and repair facility.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Veteran Electrical Power Systems, INCvet-eps.comHQ: Los Angeles, CA, United StatesReported employees: 11-50 | Los Angeles, CA, United States | 11-50 | Exact match | 16 contacts → |
“Electrical testing of Electrical Components” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Transformer Service INCtransformer-svc.comHQ: Concord, NH, United StatesReported employees: 11-50 | Concord, NH, United States | 11-50 | Exact match | 16 contacts → |
“Transformer Services Inc.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Struthers-Dunn INCstruthers-dunn.comHQ: Timmonsville, SC, United StatesReported employees: 11-50 | Timmonsville, SC, United States | 11-50 | Exact match | 16 contacts → |
“Established in 1923, Struthers-Dunn is one of the oldest and most respected relay manufacturers in the world.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Burlington Safety Laboratoryburlingtonsafety.comHQ: Burlington, CA, United StatesReported employees: 51-200 | Burlington, CA, United States | 51-200 | Exact match | 12 contacts → |
“Your safety is our concern.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  P&c Prime, LLCpandctesting.comHQ: Fredericksburg, IN, United StatesReported employees: 1-10 | Fredericksburg, IN, United States | 1-10 | Exact match | 8 contacts → |
“With over 100 years of combined experience, P&C Prime has the ability to test and commission the protection and control systems in your substation or generating station.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Currentechnologies INCcurrentechnologies.net HQ: Caldwell, ID, United StatesReported employees: 1-10 | Caldwell, ID, United States | 1-10 | Exact match | 3 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 15 | Computer Components INCrelays-unlimited.com HQ: Greenville, SC, United StatesReported employees: 1-10 | Greenville, SC, United States | 1-10 | Exact match | 2 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 16 |  OHM Megaohmmega.comHQ: Louisville, IN, United StatesReported employees: 1-10 | Louisville, IN, United States | 1-10 | Exact match | 2 contacts → |
“Providing third party electrical protection testing and commissioning services.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Bluegate PCAbluegatepca.comHQ: Evansville, WY, United StatesReported employees: 1-10 | Evansville, WY, United States | 1-10 | Exact match | 2 contacts → |
“BlueGate PCA (Protection, Control, and Automation) is an electrical testing & commissioning company serving the industrial, commercial, utility, and renewable sectors.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 17 of 44 company matches
Build a targeted audience, find relevant contacts and export available records to your workflow.
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Relay testing companies: dataset insights
November 6, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
44 records in the displayed employee bands.
0 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
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 44 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: November 6, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for relay testing companies?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many relay testing companies did RevenueBase find based in the United States?
The saved snapshot records 44 matching company records, 1,181 tracked contacts and 185 verified emails. The public preview displays 17 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: November 6, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Relay testing companies by geography
Cite this list
RevenueBase Data Team. Top 17 relay testing companies based in the United States. Snapshot: November 6, 2026. https://revenuebase.ai/companies/relay-testing-companies/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Relay testing companies based in India
- AI companies based in the United States
- Cybersecurity companies based in the United States
- Manufacturing companies based in the United States
- Media companies based in the United States
- Oil and gas companies based in the United States
Company intelligence · public preview
Top 17 relay testing companies based in the United States
RevenueBase records 44 matching company records for relay testing companies based in the United States, with 1,181 tracked contacts and 185 verified work emails.
This public preview shows 17 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: November 6, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 17 relay testing companies based in the United States
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | Electric Power Systemsvoltyx.com HQ: Maryland Heights, MI, United StatesReported employees: 501-1,000 | Maryland Heights, MI, United States | 501-1,000 | Exact match | 678 contacts → |
“Electric Power Systems is an independent electrical testing & engineering organization.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Telex LLCtelexllc.com HQ: Fayetteville, AR, United StatesReported employees: 51-200 | Fayetteville, AR, United States | 51-200 | Exact match | 56 contacts → |
“Welcome to Telex.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Song Chuan Precision Groupsongchuanusa.com HQ: Pompano Beach, FL, United StatesReported employees: 11-50 | Pompano Beach, FL, United States | 11-50 | Exact match | 41 contacts → |
“Song Chuan is a world class manufacturer of power electromechanical relays with over 50 years of experience.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | EPS Technologyeps-technology.com HQ: Durham, CT, United StatesReported employees: 51-200 | Durham, CT, United States | 51-200 | Exact match | 41 contacts → |
“EPST is a NETA Certified, Independent Electrical Testing & Engineering Organization.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Applus Keystonekeystonecompliance.com HQ: New Castle, NC, United StatesReported employees: 11-50 | New Castle, NC, United States | 11-50 | Exact match | 35 contacts → |
“Applus Keystone+ specializes in streamlining the burden of regulatory compliance testing.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Arizona Electrical Apparatus, INCaeacircuitbreakers.com HQ: Tucson, AZ, United StatesReported employees: 51-200 | Tucson, AZ, United States | 51-200 | Exact match | 34 contacts → |
“AEA is the premier value-added innovator in the electrical power distribution industry.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | CIT Relay & Switchcitrelay.com HQ: Rogers, MN, United StatesReported employees: 501-1,000 | Rogers, MN, United States | 501-1,000 | Exact match | 33 contacts → |
“CIT Relay & Switch, located in greater Minneapolis, MN, is a designer and manufacturer of quality Electromechanical Relays, Solid State Relays and Electromechanical Switches.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | ARM Camcoarmcamco.net HQ: Ebensburg, PA, United StatesReported employees: 51-200 | Ebensburg, PA, United States | 51-200 | Exact match | 21 contacts → |
“CAMCO is an independent testing and repair facility.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Veteran Electrical Power Systems, INCvet-eps.com HQ: Los Angeles, CA, United StatesReported employees: 11-50 | Los Angeles, CA, United States | 11-50 | Exact match | 16 contacts → |
“Electrical testing of Electrical Components” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Transformer Service INCtransformer-svc.com HQ: Concord, NH, United StatesReported employees: 11-50 | Concord, NH, United States | 11-50 | Exact match | 16 contacts → |
“Transformer Services Inc.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Struthers-Dunn INCstruthers-dunn.com HQ: Timmonsville, SC, United StatesReported employees: 11-50 | Timmonsville, SC, United States | 11-50 | Exact match | 16 contacts → |
“Established in 1923, Struthers-Dunn is one of the oldest and most respected relay manufacturers in the world.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Burlington Safety Laboratoryburlingtonsafety.com HQ: Burlington, CA, United StatesReported employees: 51-200 | Burlington, CA, United States | 51-200 | Exact match | 12 contacts → |
“Your safety is our concern.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | P&c Prime, LLCpandctesting.com HQ: Fredericksburg, IN, United StatesReported employees: 1-10 | Fredericksburg, IN, United States | 1-10 | Exact match | 8 contacts → |
“With over 100 years of combined experience, P&C Prime has the ability to test and commission the protection and control systems in your substation or generating station.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Currentechnologies INCcurrentechnologies.net HQ: Caldwell, ID, United StatesReported employees: 1-10 | Caldwell, ID, United States | 1-10 | Exact match | 3 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 15 | Computer Components INCrelays-unlimited.com HQ: Greenville, SC, United StatesReported employees: 1-10 | Greenville, SC, United States | 1-10 | Exact match | 2 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 16 | OHM Megaohmmega.com HQ: Louisville, IN, United StatesReported employees: 1-10 | Louisville, IN, United States | 1-10 | Exact match | 2 contacts → |
“Providing third party electrical protection testing and commissioning services.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Bluegate PCAbluegatepca.com HQ: Evansville, WY, United StatesReported employees: 1-10 | Evansville, WY, United States | 1-10 | Exact match | 2 contacts → |
“BlueGate PCA (Protection, Control, and Automation) is an electrical testing & commissioning company serving the industrial, commercial, utility, and renewable sectors.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 17 of 44 company matches
Build a targeted audience, find relevant contacts and export available records to your workflow.
Free signup · 500 credits · limited free results
Relay testing companies: dataset insights
November 6, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
44 records in the displayed employee bands.
0 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
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 44 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: November 6, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for relay testing companies?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many relay testing companies did RevenueBase find based in the United States?
The saved snapshot records 44 matching company records, 1,181 tracked contacts and 185 verified emails. The public preview displays 17 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: November 6, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Relay testing companies by geography
Cite this list
RevenueBase Data Team. Top 17 relay testing companies based in the United States. Snapshot: November 6, 2026. https://revenuebase.ai/companies/relay-testing-companies/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
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