Company lists · Data refreshed September 2026

Top 25 High voltage transformer manufacturers based in Brazil

Name: High voltage transformer manufacturers based in Brazil
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 30, 2026 275 companies tracked

RevenueBase identified 275 high voltage transformer manufacturers headquartered in Brazil as of September 2026 and tracks 6,692 professional contacts across them, including 993 with verified work emails. Sao Paulo is the largest hub.

This list covers high voltage transformer manufacturers headquartered in Brazil, 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 30, 2026.

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

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 30, 2026 86% judged on-target in blind review

275Companies

6,692Contacts tracked

993Verified emails

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The 25 largest high voltage transformer manufacturers based in Brazil

Ranked by team size

Top 25 of 275 high voltage transformer manufacturers based in Brazil, ranked by team size, largest first. Data refreshed Sep 30, 2026. RevenueBase Smart Search rates how each company's information relates to high voltage transformer manufacturers: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Engelmig Energia	Indirect evidence	Belo Horizonte, BrazilHQ checked Sep 30, 2026	5,001-10,000	1,818 contacts →
	Indirect evidence “A Engelmig foi fundada em 1985 com o objetivo de prestar serviços de engenharia em redes de distribuição de energia elétrica.” Source: RevenueBase Database · checked Sep 30, 2026
2	Itaipu Transformadores	Partial evidence	Itápolis, BrazilHQ checked Sep 30, 2026	1,001-5,000	350 contacts →
	Partial evidence “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.” Source: RevenueBase Database · checked Sep 30, 2026
3	Trael Transformadores Elétricos Ltda	Partial evidence	Cuiabá, BrazilHQ checked Sep 30, 2026	1,001-5,000	230 contacts →
	Partial evidence “A TRAEL iniciou suas atividades em 1992 com a fabricação de transformadores de distribuição, força e especiais.” Source: RevenueBase Database · checked Sep 30, 2026
4	TDM Service & Solutions	Indirect evidence	Bragança Paulista, BrazilHQ checked Sep 30, 2026	201-500	218 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 30, 2026
5	ITAM	Partial evidence	Manaus, BrazilHQ checked Sep 30, 2026	201-500	209 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 30, 2026
6	Balteau Produtos Elétricos Ltda - Grupo WEG	Strong evidence	Itajubá, BrazilHQ checked Sep 30, 2026	201-500	206 contacts →
	Strong evidence “Balteau Produtos Elétricos LTDA is a traditional manufacturer of Instrument Transformers and Metering Device Set in Itajubá-MG, Brazil.” Source: RevenueBase Database · checked Sep 30, 2026
7	Tamura Brasil	Strong evidence	Massaranduba, BrazilHQ checked Sep 30, 2026	501-1,000	171 contacts →
	Strong evidence “A INDUSUL For 20 years in the global market for electrical and electronic products, Indusul is a Brazilian manufacturer of dry-type, single and three-phase transformers, with two…” Source: RevenueBase Database · checked Sep 30, 2026
8	Maurizio	Indirect evidence	Sao Paulo, BrazilHQ checked Sep 30, 2026	201-500	158 contacts →
	Indirect evidence “Maurizio, fundada em 1956, consolidou-se como referência na fabricação de equipamentos de alta tensão para linhas de Distribuição, Transmissão, Subestação e Smart Grids.” Source: RevenueBase Database · checked Sep 30, 2026
9	Isolet	Indirect evidence	Itu, BrazilHQ checked Sep 30, 2026	201-500	134 contacts →
	Indirect evidence “ISOLET is a company based out of Rod.” Source: RevenueBase Database · checked Sep 30, 2026
10	Comtrafo	Partial evidence	Cornelio Procopio, BrazilHQ checked Sep 30, 2026	501-1,000	119 contacts →
	Partial evidence “A COMTRAFO atua desde 1994 produzindo transformadores de distribuição e força para o mercado nacional e internacional.” Source: RevenueBase Database · checked Sep 30, 2026
11	Proelt	Indirect evidence	Joinville, BrazilHQ checked Sep 30, 2026	201-500	111 contacts →
	Indirect evidence “Há mais de 40 anos colocamos toda a nossa energia, talento e conhecimento para contribuir com o negócio dos nossos clientes e com a qualidade de vida das pessoas.” Source: RevenueBase Database · checked Sep 30, 2026
12	Cema Construções E Tecnologia	Indirect evidence	Salvador, BrazilHQ checked Sep 30, 2026	201-500	83 contacts →
	Indirect evidence “Empresa com mais de 20 anos no mercado, atuando como força motriz para os maiores grupos de transmissão e distribuição de energia elétrica.” Source: RevenueBase Database · checked Sep 30, 2026
13	Energoato Eletricidade Ltda	Indirect evidence	Aparecida De Goiânia, BrazilHQ checked Sep 30, 2026	51-200	75 contacts →
	Indirect evidence “Obras civis e Montagens eletromecânicas em Subestações de até 500 kV, Linhas de Transmissão de até 230 kV, Usinas Termoelétricas, Hidrelétricas e Eólicas, testes/ensaios em relés…” Source: RevenueBase Database · checked Sep 30, 2026
14	Smart Electric Engenharia E Sistemas Ltda	Indirect evidence	Guarulhos, BrazilHQ checked Sep 30, 2026	51-200	71 contacts →
	Indirect evidence “Somos uma empresa de serviços de engenharia elétrica, com grande experiência em usinas hidrelétricas, termoelétricas, parques eólicos e subestações de transmissão e distribuição…” Source: RevenueBase Database · checked Sep 30, 2026
15	Conin Construction And Assembly Ltda	Indirect evidence	Manaus, BrazilHQ checked Sep 30, 2026	51-200	41 contacts →
	Indirect evidence “Since our founding in 1995 in Manaus-AM, CONIN Construction and Assembly LTD is not just a name in the electrical engineering, electromechanical, and mechanical services sector…” Source: RevenueBase Database · checked Sep 30, 2026
16	Elos Eletrotécnica	Strong evidence	Curitiba, BrazilHQ checked Sep 30, 2026	11-50	34 contacts →
	Strong evidence “We are a company that has been operating in the LOW, MEDIUM, HIGH VOLTAGE market for 20 years selling high quality products, through our partners NKT, RITZ, ENSTO, SIBA and…” Source: RevenueBase Database · checked Sep 30, 2026
17	Polienge Soluções EM Energia	Partial evidence	Suzano, BrazilHQ checked Sep 30, 2026	51-200	32 contacts →
	Partial evidence “Com mais de 30 anos de expertise, a Polienge atua no desenvolvimento e fabricação de Transformadores, Indutores e Quadros e Painéis Elétricos, além de soluções especiais para…” Source: RevenueBase Database · checked Sep 30, 2026
18	Transformadores Jundiaí	Partial evidence	Jundiaí, BrazilHQ checked Sep 30, 2026	51-200	31 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 30, 2026
19	Grupo Gera Energia	Indirect evidence	Sao Paulo, BrazilHQ checked Sep 30, 2026	11-50	31 contacts →
	Indirect evidence “O GRUPO GERA ENERGIA foi fundado por profissionais experientes com mais de 30 anos no mercado na área de geração e distribuição de energia.” Source: RevenueBase Database · checked Sep 30, 2026
20	Contatus Eletricidade	Indirect evidence	Paulínia, BrazilHQ checked Sep 30, 2026	51-200	30 contacts →
	Indirect evidence “Contatus Eletricidade is an industrial electrical assembly company based at Rua Francisco Lucherini, 296, Betel, Paulinia, São Paulo, Brazil, CEP 13148-162” Source: RevenueBase Database · checked Sep 30, 2026
21	ADEEL	Indirect evidence	Goiânia, BrazilHQ checked Sep 30, 2026	11-50	29 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 30, 2026
22	Trafocare Ltda	Partial evidence	Campinas, BrazilHQ checked Sep 30, 2026	11-50	26 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 30, 2026
23	PIX Engenharia E Serviços	Indirect evidence	Camaçari, BrazilHQ checked Sep 30, 2026	1-10	25 contacts →
	Indirect evidence “Empresa especializada em soluções elétricas: Service- Reparo em disjuntores e chaves (BT, MT, AT)- Reparo em relés de proteção - Manutenção preventiva e corretiva na subestação -…” Source: RevenueBase Database · checked Sep 30, 2026
24	Maintenance Service Engenharia DE Manutenção Ltda	Indirect evidence	Curitiba, BrazilHQ checked Sep 30, 2026	11-50	24 contacts →
	Indirect evidence “Estamos no mercado desde 1986 prestando serviços de manutenção em subestações, executando retrofit em equipamentos e comissionamento em subestações de media, alta e extra-alta…” Source: RevenueBase Database · checked Sep 30, 2026
25	WT Engenharia	Indirect evidence	Recife, BrazilHQ checked Sep 30, 2026	11-50	24 contacts →
	Indirect evidence “A WT - Manutenções e Montagens Ltda, Fundada em 1997, tem desenvolvido trabalhos nos diversos estados do Nordeste, atuando sob o conceito de engenharia integrada.” Source: RevenueBase Database · checked Sep 30, 2026

RevenueBase Smart Search

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

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

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

Showing 25 of 275 high voltage transformer manufacturers based in Brazil

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High voltage transformer manufacturers based in Brazil at a glance

As of Sep 30, 2026

14.8%Verified-email coverage

24.3Average contacts per company

11-50Median size (employees)

13.1%Largest-city concentration · Sao Paulo

Sep 30, 2026Page data refreshed

Companies by employee count

1-10

11-50

115

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

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 275 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 high voltage transformer manufacturers, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in Brazil whose own description of what they do matches “high voltage transformer manufacturers”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names high voltage transformer manufacturers), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among high voltage transformer manufacturers, and records with no verified work email. Companies headquartered outside Brazil 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, 993 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 30, 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 high voltage transformer manufacturers, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many high voltage transformer manufacturers are there based in Brazil?

RevenueBase identified 275 high voltage transformer manufacturers headquartered in Brazil 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?

Engelmig Energia, headquartered in Belo Horizonte, tops this list with the largest team on record.

Which city has the most high voltage transformer manufacturers?

Sao Paulo leads with 36 headquartered companies, followed by Guarulhos (11) and Jundiai (10).

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 993 verified decision-maker contacts tracked across these 275 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 30, 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.