Company lists · Data refreshed October 2026
Top 18 Automatic transfer switch maintenance & repair services based in the United States
RevenueBase identified 46 company matches for automatic transfer switch maintenance & repair services associated with the United States as of October 2026 and tracks 1,059 professional contacts across them, including 430 with verified work emails. Auburn is the largest hub.
This list covers company matches for automatic transfer switch maintenance & repair services 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 22, 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 18 largest automatic transfer switch maintenance & repair services based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 199 contacts → | ||||
Exact match “Founded in 1955, Russelectric®, A Siemens Business, provides high-integrity power control solutions for mission critical applications in the healthcare, information technology…” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase | |||||
| 2 | 198 contacts → | ||||
Exact match “GenServe supports critical infrastructure by delivering expert, OEM-agnostic power services across all generator systems and brands.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase | |||||
| 3 | 138 contacts → | ||||
Exact match “Established in 1960, Electric Motor and Contracting remains one of the largest independently owned electric motor and pump repair shops in the U.S.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase | |||||
| 4 | 62 contacts → | ||||
Exact match “We service, maintain, repair, and upgrade all manufacturers' electrical equipment, including switchgear, circuit breakers, transformers, and starters.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase | |||||
| 5 | 58 contacts → | ||||
Exact match “FM Generator is a premier provider of preventative maintenance and repair services on generators and transfer switches throughout the Northeast and Mid-Atlantic States.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase | |||||
| 6 | 46 contacts → | ||||
Exact match “ZAVTEK is one of the nation's largest privately held critical power service organizations providing preventive maintenance, 24/7 emergency service, consulting and uninterruptible…” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase | |||||
| 7 | 26 contacts → | ||||
Exact match “Weld Power Generator has been providing a premium & professional emergency power service to the northeast region for 70 years.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase | |||||
| 8 | 26 contacts → | ||||
Exact match “As a nationwide generator service and support company, Ultimate Service Associates provides regional and national support to clients with critical power system networks.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase | |||||
| 9 | 15 contacts → | ||||
Exact match “Power Generation and Control, Inc performs service, repair, and installation of commercial generators.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase | |||||
| 10 | 15 contacts → | ||||
Exact match “Advanced Electric Systems (AES) specializes in the service and maintenance of high and low voltage substations, power transformers and critical power systems infrastructure.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase | |||||
| 11 | 15 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase | |||||
| 12 | 13 contacts → | ||||
Exact match “For more than 70 years, AC Electric has been known for its exceptional customer service and unparalleled reputation in the industry.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase | |||||
| 13 | 5 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase | |||||
| 14 | 4 contacts → | ||||
Exact match “Power Electronics(PE) focuses on the re-designing and rewinding, testing, commissioning, repair/maintenance, replacing power transformer components, pad-mount/distribution…” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase | |||||
| 15 | 4 contacts → | ||||
Exact match “Electrical Systems Maintenance, Repair & Testing Performed On-Site Power Circuit Breaker Testing & Repair Transformer Testing & Oil Diagnostics Protective Relay Testing…” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase | |||||
| 16 | 2 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase | |||||
| 17 | 1 contacts → | ||||
Exact match “Delta Power, Inc.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase | |||||
| 18 | 1 contacts → | ||||
Exact match “Backup power systems maintenance and repair.” Recorded in the RevenueBase company graph · Oct 22, 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 “automatic transfer switch maintenance & repair services”. 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 18 of 46 automatic transfer switch maintenance & repair services based in the United States
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Automatic transfer switch maintenance & repair services based in the United States at a glance
As of Oct 22, 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 46 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 “automatic transfer switch maintenance & repair services” 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 430 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 22, 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 “automatic transfer switch maintenance & repair services”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many automatic transfer switch maintenance & repair services are there based in the United States?
RevenueBase identified 46 company matches for automatic transfer switch maintenance & repair services 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?
Russelectric, A Siemens Business tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most automatic transfer switch maintenance & repair services?
Auburn leads with 3 company records, followed by Baton Rouge (2) and Albion (1).
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 430 professional contacts with verified work emails tracked across these 46 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 22, 2026.
Ready to reach these companies? Verified emails and direct dials for all 46 automatic transfer switch maintenance & repair services based in the United States. Start with a free account, no credit card.
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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.
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Company intelligence · public preview
Top 18 automatic transfer switch maintenance & repair services 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 46 matching company records for automatic transfer switch maintenance & repair services based in the United States, with 1,059 tracked contacts and 430 verified work emails.
This public preview shows 18 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: October 22, 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 18 automatic transfer switch maintenance & repair services 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 | Russelectric, A Siemens Businessrusselectric.com HQ: Hingham, MA, United StatesReported employees: 201-500 | Hingham, MA, United States | 201-500 | Exact match | 199 contacts → |
“Founded in 1955, Russelectric®, A Siemens Business, provides high-integrity power control solutions for mission critical applications in the healthcare, information technology…” Recorded description excerpt · October 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Genservegenserveinc.comHQ: New York, NY, United StatesReported employees: 201-500 | New York, NY, United States | 201-500 | Exact match | 198 contacts → |
“GenServe supports critical infrastructure by delivering expert, OEM-agnostic power services across all generator systems and brands.” Recorded description excerpt · October 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Electric Motor & Contracting Co., INCemc-co.com HQ: Chesapeake, VA, United StatesReported employees: 201-500 | Chesapeake, VA, United States | 201-500 | Exact match | 138 contacts → |
“Established in 1960, Electric Motor and Contracting remains one of the largest independently owned electric motor and pump repair shops in the U.S.” Recorded description excerpt · October 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Southern Power Systemssopower.com HQ: Baton Rouge, LA, United StatesReported employees: 51-200 | Baton Rouge, LA, United States | 51-200 | Exact match | 62 contacts → |
“We service, maintain, repair, and upgrade all manufacturers' electrical equipment, including switchgear, circuit breakers, transformers, and starters.” Recorded description excerpt · October 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | FM Generator, INCfmgenerator.com HQ: Canton, MA, United StatesReported employees: 51-200 | Canton, MA, United States | 51-200 | Exact match | 58 contacts → |
“FM Generator is a premier provider of preventative maintenance and repair services on generators and transfer switches throughout the Northeast and Mid-Atlantic States.” Recorded description excerpt · October 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Zavtek, INCzavtek.com HQ: West Chester, OH, United StatesReported employees: 51-200 | West Chester, OH, United States | 51-200 | Exact match | 46 contacts → |
“ZAVTEK is one of the nation's largest privately held critical power service organizations providing preventive maintenance, 24/7 emergency service, consulting and uninterruptible…” Recorded description excerpt · October 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Weld Power Generator INCweldpower.com HQ: Millbury, MA, United StatesReported employees: 11-50 | Millbury, MA, United States | 11-50 | Exact match | 26 contacts → |
“Weld Power Generator has been providing a premium & professional emergency power service to the northeast region for 70 years.” Recorded description excerpt · October 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Ultimate Service Associates, LLCusa-svc.com HQ: Tulsa, OK, United StatesReported employees: 11-50 | Tulsa, OK, United States | 11-50 | Exact match | 26 contacts → |
“As a nationwide generator service and support company, Ultimate Service Associates provides regional and national support to clients with critical power system networks.” Recorded description excerpt · October 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Power Generation And Control, INCpgandc.com HQ: Cherryville, NC, United StatesReported employees: 11-50 | Cherryville, NC, United States | 11-50 | Exact match | 15 contacts → |
“Power Generation and Control, Inc performs service, repair, and installation of commercial generators.” Recorded description excerpt · October 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Advanced Electric Systemsadvancedelectricsystems.comHQ: Heber City, UT, United StatesReported employees: 11-50 | Heber City, UT, United States | 11-50 | Exact match | 15 contacts → |
“Advanced Electric Systems (AES) specializes in the service and maintenance of high and low voltage substations, power transformers and critical power systems infrastructure.” Recorded description excerpt · October 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Electro-Motion, INCelectromotion.com HQ: Fremont, CA, United StatesReported employees: 11-50 | Fremont, CA, United States | 11-50 | Exact match | 15 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 12 |  AC Electric Corporationacelec.comHQ: Auburn, ME, United StatesReported employees: 51-200 | Auburn, ME, United States | 51-200 | Exact match | 13 contacts → |
“For more than 70 years, AC Electric has been known for its exceptional customer service and unparalleled reputation in the industry.” Recorded description excerpt · October 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Transformer Services INCtransformerservicesinc.com HQ: Clackamas, OR, United StatesReported employees: 11-50 | Clackamas, OR, United States | 11-50 | Exact match | 5 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 14 | Power Electronicspowerelectronicsus.com HQ: Visalia, CA, United StatesReported employees: 1-10 | Visalia, CA, United States | 1-10 | Exact match | 4 contacts → |
“Power Electronics(PE) focuses on the re-designing and rewinding, testing, commissioning, repair/maintenance, replacing power transformer components, pad-mount/distribution…” Recorded description excerpt · October 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Michigan Switchgear Servicesmichiganswitchgear.com HQ: Auburn, MI, United StatesReported employees: 11-50 | Auburn, MI, United States | 11-50 | Exact match | 4 contacts → |
“Electrical Systems Maintenance, Repair & Testing Performed On-Site Power Circuit Breaker Testing & Repair Transformer Testing & Oil Diagnostics Protective Relay Testing…” Recorded description excerpt · October 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Zenith Power Systemszenithpowersys.com HQ: Brenham, TX, United StatesReported employees: 1-10 | Brenham, TX, United States | 1-10 | Exact match | 2 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 17 | Delta Power INCdeltapowerinc.com HQ: Santa Ana, CA, United StatesReported employees: 11-50 | Santa Ana, CA, United States | 11-50 | Exact match | 1 contacts → |
“Delta Power, Inc.” Recorded description excerpt · October 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Sollid Power Systems, INCsollidpower.com HQ: Kingsburg, CA, United StatesReported employees: 1-10 | Kingsburg, CA, United States | 1-10 | Exact match | 1 contacts → |
“Backup power systems maintenance and repair.” Recorded description excerpt · October 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 18 of 46 company matches
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Automatic transfer switch maintenance & repair services: dataset insights
October 22, 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
46 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 46 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: October 22, 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 automatic transfer switch maintenance & repair services?
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 automatic transfer switch maintenance & repair services did RevenueBase find based in the United States?
The saved snapshot records 46 matching company records, 1,059 tracked contacts and 430 verified emails. The public preview displays 18 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: October 22, 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
Cite this list
RevenueBase Data Team. Top 18 automatic transfer switch maintenance & repair services based in the United States. Snapshot: October 22, 2026. https://revenuebase.ai/companies/automatic-transfer-switch-maintenance-repair-services/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
- 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
- Real estate companies based in the United States
Company intelligence · public preview
Top 18 automatic transfer switch maintenance & repair services based in the United States
RevenueBase records 46 matching company records for automatic transfer switch maintenance & repair services based in the United States, with 1,059 tracked contacts and 430 verified work emails.
This public preview shows 18 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: October 22, 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 18 automatic transfer switch maintenance & repair services 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 | Russelectric, A Siemens Businessrusselectric.com HQ: Hingham, MA, United StatesReported employees: 201-500 | Hingham, MA, United States | 201-500 | Exact match | 199 contacts → |
“Founded in 1955, Russelectric®, A Siemens Business, provides high-integrity power control solutions for mission critical applications in the healthcare, information technology…” Recorded description excerpt · October 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Genservegenserveinc.com HQ: New York, NY, United StatesReported employees: 201-500 | New York, NY, United States | 201-500 | Exact match | 198 contacts → |
“GenServe supports critical infrastructure by delivering expert, OEM-agnostic power services across all generator systems and brands.” Recorded description excerpt · October 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Electric Motor & Contracting Co., INCemc-co.com HQ: Chesapeake, VA, United StatesReported employees: 201-500 | Chesapeake, VA, United States | 201-500 | Exact match | 138 contacts → |
“Established in 1960, Electric Motor and Contracting remains one of the largest independently owned electric motor and pump repair shops in the U.S.” Recorded description excerpt · October 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Southern Power Systemssopower.com HQ: Baton Rouge, LA, United StatesReported employees: 51-200 | Baton Rouge, LA, United States | 51-200 | Exact match | 62 contacts → |
“We service, maintain, repair, and upgrade all manufacturers' electrical equipment, including switchgear, circuit breakers, transformers, and starters.” Recorded description excerpt · October 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | FM Generator, INCfmgenerator.com HQ: Canton, MA, United StatesReported employees: 51-200 | Canton, MA, United States | 51-200 | Exact match | 58 contacts → |
“FM Generator is a premier provider of preventative maintenance and repair services on generators and transfer switches throughout the Northeast and Mid-Atlantic States.” Recorded description excerpt · October 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Zavtek, INCzavtek.com HQ: West Chester, OH, United StatesReported employees: 51-200 | West Chester, OH, United States | 51-200 | Exact match | 46 contacts → |
“ZAVTEK is one of the nation's largest privately held critical power service organizations providing preventive maintenance, 24/7 emergency service, consulting and uninterruptible…” Recorded description excerpt · October 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Weld Power Generator INCweldpower.com HQ: Millbury, MA, United StatesReported employees: 11-50 | Millbury, MA, United States | 11-50 | Exact match | 26 contacts → |
“Weld Power Generator has been providing a premium & professional emergency power service to the northeast region for 70 years.” Recorded description excerpt · October 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Ultimate Service Associates, LLCusa-svc.com HQ: Tulsa, OK, United StatesReported employees: 11-50 | Tulsa, OK, United States | 11-50 | Exact match | 26 contacts → |
“As a nationwide generator service and support company, Ultimate Service Associates provides regional and national support to clients with critical power system networks.” Recorded description excerpt · October 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Power Generation And Control, INCpgandc.com HQ: Cherryville, NC, United StatesReported employees: 11-50 | Cherryville, NC, United States | 11-50 | Exact match | 15 contacts → |
“Power Generation and Control, Inc performs service, repair, and installation of commercial generators.” Recorded description excerpt · October 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Advanced Electric Systemsadvancedelectricsystems.com HQ: Heber City, UT, United StatesReported employees: 11-50 | Heber City, UT, United States | 11-50 | Exact match | 15 contacts → |
“Advanced Electric Systems (AES) specializes in the service and maintenance of high and low voltage substations, power transformers and critical power systems infrastructure.” Recorded description excerpt · October 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Electro-Motion, INCelectromotion.com HQ: Fremont, CA, United StatesReported employees: 11-50 | Fremont, CA, United States | 11-50 | Exact match | 15 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 12 | AC Electric Corporationacelec.com HQ: Auburn, ME, United StatesReported employees: 51-200 | Auburn, ME, United States | 51-200 | Exact match | 13 contacts → |
“For more than 70 years, AC Electric has been known for its exceptional customer service and unparalleled reputation in the industry.” Recorded description excerpt · October 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Transformer Services INCtransformerservicesinc.com HQ: Clackamas, OR, United StatesReported employees: 11-50 | Clackamas, OR, United States | 11-50 | Exact match | 5 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 14 | Power Electronicspowerelectronicsus.com HQ: Visalia, CA, United StatesReported employees: 1-10 | Visalia, CA, United States | 1-10 | Exact match | 4 contacts → |
“Power Electronics(PE) focuses on the re-designing and rewinding, testing, commissioning, repair/maintenance, replacing power transformer components, pad-mount/distribution…” Recorded description excerpt · October 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Michigan Switchgear Servicesmichiganswitchgear.com HQ: Auburn, MI, United StatesReported employees: 11-50 | Auburn, MI, United States | 11-50 | Exact match | 4 contacts → |
“Electrical Systems Maintenance, Repair & Testing Performed On-Site Power Circuit Breaker Testing & Repair Transformer Testing & Oil Diagnostics Protective Relay Testing…” Recorded description excerpt · October 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Zenith Power Systemszenithpowersys.com HQ: Brenham, TX, United StatesReported employees: 1-10 | Brenham, TX, United States | 1-10 | Exact match | 2 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 17 | Delta Power INCdeltapowerinc.com HQ: Santa Ana, CA, United StatesReported employees: 11-50 | Santa Ana, CA, United States | 11-50 | Exact match | 1 contacts → |
“Delta Power, Inc.” Recorded description excerpt · October 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Sollid Power Systems, INCsollidpower.com HQ: Kingsburg, CA, United StatesReported employees: 1-10 | Kingsburg, CA, United States | 1-10 | Exact match | 1 contacts → |
“Backup power systems maintenance and repair.” Recorded description excerpt · October 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 18 of 46 company matches
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Automatic transfer switch maintenance & repair services: dataset insights
October 22, 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
46 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 46 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: October 22, 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 automatic transfer switch maintenance & repair services?
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 automatic transfer switch maintenance & repair services did RevenueBase find based in the United States?
The saved snapshot records 46 matching company records, 1,059 tracked contacts and 430 verified emails. The public preview displays 18 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: October 22, 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
Cite this list
RevenueBase Data Team. Top 18 automatic transfer switch maintenance & repair services based in the United States. Snapshot: October 22, 2026. https://revenuebase.ai/companies/automatic-transfer-switch-maintenance-repair-services/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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