Company lists · Data refreshed November 2026

Top 19 Voltage regulating transformers suppliers based in Brazil

RevenueBase identified 124 company matches for voltage regulating transformers suppliers associated with Brazil as of November 2026 and tracks 2,202 professional contacts across them, including 220 with verified work emails. Sao Paulo is the largest hub.

This list covers company matches for voltage regulating transformers suppliers associated with Brazil, 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 3, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list RevenueBase SmartSearch · Exact Recorded Nov 3, 2026 How this list was built
124Companies
2,202Contacts tracked
220Verified emails
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The 19 largest voltage regulating transformers suppliers based in Brazil

Ranked by team size
Top 19 of 124 company matches for voltage regulating transformers suppliers based in Brazil, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 3, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchItápolis, BrazilHQ recorded Nov 3, 20261,001-5,000404 contacts →

Exact match

“Com mais de 50 anos de história, a Itaipu Transformadores é uma das principais referências na fabricação de transformadores de potência no Brasil e no exterior.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
2Exact matchCuiabá, BrazilHQ recorded Nov 3, 20261,001-5,000274 contacts →

Exact match

“A TRAEL iniciou suas atividades em 1992 com a fabricação de transformadores de distribuição, força e especiais.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
3Exact matchManaus, BrazilHQ recorded Nov 3, 2026201-500230 contacts →

Exact match

“A Indústria de Transformadores Amazonas Ltda, ITAM, é uma empresa do segmento de energia elétrica, especializada na produção de transformadores de diversas classes e potências…”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
4Exact matchBragança Paulista, BrazilHQ recorded Nov 3, 2026201-500229 contacts →

Exact match

“We have been in the market for over 20 years serving the main industrial and commercial markets, gaining prominent positions in the segments of Engineering, Commissioning of…”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
5Exact matchCornelio Procopio, BrazilHQ recorded Nov 3, 2026501-1,000141 contacts →

Exact match

“A COMTRAFO atua desde 1994 produzindo transformadores de distribuição e força para o mercado nacional e internacional.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
6Exact matchGoiânia, BrazilHQ recorded Nov 3, 202611-5036 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
7Exact matchJundiaí, BrazilHQ recorded Nov 3, 202651-20034 contacts →

Exact match

“A "Transformadores Jundiaí – Soluções em Energia" se consolida, desde 1990, no mercado regional e nacional como referência no segmento elétrico, sempre seguindo o compromisso de…”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
8Exact matchCampinas, BrazilHQ recorded Nov 3, 202611-5031 contacts →

Exact match

“A Trafocare é uma empresa especializada na manutenção de transformadores e comércio de fluidos isolantes elétricos, investindo no que há de mais moderno e eficiente no mercado…”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
9Exact matchMandirituba, BrazilHQ recorded Nov 3, 202651-20026 contacts →

Exact match

“Fundada em 2015, a partir da união de profissionais com mais de 30 anos de experiência no mercado de energia e na fabricação de equipamentos eletromecânicos voltados para…”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
10Exact matchPinhais, BrazilHQ recorded Nov 3, 202611-5017 contacts →

Exact match

“A Entran Indústria de Equipamentos foi fundada em 1988 na cidade de Curitiba, Paraná.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
11Exact matchBlumenau, BrazilHQ recorded Nov 3, 202611-5012 contacts →

Exact match

“Com dezesseis anos de mercado a Adftronik atua na fabricação de estabilizadores de tensão monofásicos e trifásicos de até 150Kva, no break`s, transformadores monofásicos e…”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
12Exact matchGuarulhos, BrazilHQ recorded Nov 3, 202611-509 contacts →

Exact match

“Média Tensão Comercial Elétrica, toda linha de materiais de 15 a 36KV, acessórios e peças para Cabines Primárias e Subestações de Entrada, Equipamentos de Segurança – NR 10 –…”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
13Exact matchSão José Do Rio Pardo, BrazilHQ recorded Nov 3, 202651-2008 contacts →

Exact match

“Founded in 1995, Riotrafo has been providing innovative solutions in the Electricity Distribution transformers segment in voltage class 15 kV, 25kV and 36,2 kV.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
14Exact matchMogi Mirim, BrazilHQ recorded Nov 3, 202611-507 contacts →

Exact match

“A Bralux Transformadores é especializada na venda, reforma e locação de transformadores e equipamentos elétricos para subestações.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
15Exact matchBlumenau, BrazilHQ recorded Nov 3, 20261-106 contacts →

Exact match

“Consultoria e Serviços de Engenharia para Cálculo e Projeto de Transformadores e Reatores e nos fenômenos envolvidos na operação destes equipamentos no Sistema Elétrico Nacional.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
16Exact matchPinhais, BrazilHQ recorded Nov 3, 202651-2006 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
17Exact matchBirigui, BrazilHQ recorded Nov 3, 20261-104 contacts →

Exact match

“We specialize in the operation, maintenance, and overhaul of electrical equipment, with a focus on voltage regulators and transformers.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
18Exact matchCuritiba, BrazilHQ recorded Nov 3, 202611-503 contacts →

Exact match

“Somos uma empresa nacional focada em tecnologia.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
19Exact matchJundiai, BrazilHQ recorded Nov 3, 20261-103 contacts →

Exact match

“A TRAFO MANUTENÇÃO é uma empresa de prestação de serviços focada em manutenções preventivas e corretivas, montagem e comissionamentos de transformadores de distribuição e de…”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase

Showing 19 of 124 voltage regulating transformers suppliers based in Brazil

See the full list, filter by size, metro and specialty, and access 220 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Voltage regulating transformers suppliers based in Brazil at a glance

As of Nov 3, 2026
10.0%Verified-email coverage
17.8Average contacts per company
11-50Median size (employees)
14.5%Largest-city concentration · Sao Paulo
Nov 3, 2026Page data refreshed

Companies by employee count

1-10
30
11-50
59
51-200
20
201-500
5
501-1,000
2
1,001-5,000
2

Email recency for this list is measured worldwide rather than for Brazil, so it is reported there. Company counts and contact totals on this page are exact for Brazil, over 124 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 Brazil whose business descriptions match “voltage regulating transformers suppliers” 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 220 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 3, 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 “voltage regulating transformers suppliers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many voltage regulating transformers suppliers are there based in Brazil?

RevenueBase identified 124 company matches for voltage regulating transformers suppliers associated with Brazil 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?

Itaipu Transformadores tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most voltage regulating transformers suppliers?

Sao Paulo leads with 18 company records, followed by Guarulhos (6) and Jundiai (6).

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 220 professional contacts with verified work emails tracked across these 124 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 3, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.