Company lists · Data refreshed September 2026

Top 25 Atex certified electrical contractors based in Brazil

Name: Atex certified electrical contractors based in Brazil
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 30, 2026 1,617 companies tracked

RevenueBase identified 1,617 atex certified electrical contractors headquartered in Brazil as of September 2026 and tracks 15,299 professional contacts across them, including 1,344 with verified work emails. Sao Paulo is the largest hub.

This list covers atex certified electrical contractors 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

1,617Companies

15,299Contacts tracked

1,344Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest atex certified electrical contractors based in Brazil

Ranked by team size

Top 25 of 1,617 atex certified electrical contractors 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 atex certified electrical contractors: 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	Engeko Engenharia E Construção Ltda	Indirect evidence	São Paulo, BrazilHQ checked Sep 30, 2026	1,001-5,000	1,036 contacts →
	Indirect evidence “No mercado desde 2007, atuamos em todo território nacional com foco no segmento industrial e na construção de parcerias a longo prazo, oferecendo diversos tipos de soluções e…” Source: RevenueBase Database · checked Sep 30, 2026
2	MSE Engenharia	Indirect evidence	Londrina, BrazilHQ checked Sep 30, 2026	201-500	826 contacts →
	Indirect evidence “Com 46 anos de profundo know-how, adquirido através do atendimento aos mais diversos segmentos industriais, a MSE Engenharia é uma empresa que se orgulha de hoje ser completa em…” Source: RevenueBase Database · checked Sep 30, 2026
3	GTEL	Partial evidence	Sao Paulo, BrazilHQ checked Sep 30, 2026	1,001-5,000	508 contacts →
	Partial evidence “Since 1975, GTEL has been providing services regarding assembly, installation and maintenance in the electrical, mechanical, utilities and fire protection areas.” Source: RevenueBase Database · checked Sep 30, 2026
4	B. Tobace Instalações Elétricas E Telefônicas Ltda	Indirect evidence	Jaboticabal, BrazilHQ checked Sep 30, 2026	1,001-5,000	478 contacts →
	Indirect evidence “B.” Source: RevenueBase Database · checked Sep 30, 2026
5	STN Empreendimentos E Construções	Indirect evidence	Areal, BrazilHQ checked Sep 30, 2026	501-1,000	471 contacts →
	Indirect evidence “A STN EMPREENDIMENTOS E CONSTRUÇÕES atua há mais de 30 anos nas áreas de engenharia elétrica, de eletromecânica e de engenharia civil em todo território nacional.” Source: RevenueBase Database · checked Sep 30, 2026
6	FR Instalações E Construções Ltda	Indirect evidence	Sao Paulo, BrazilHQ checked Sep 30, 2026	1,001-5,000	399 contacts →
	Indirect evidence “A FR Instalações é uma empresa especializada em instalações elétricas, hidráulicas, mecânicas e combate a incêndio de empreendimentos residenciais, comerciais, industriais e…” Source: RevenueBase Database · checked Sep 30, 2026
7	MA Eletromecânica	Indirect evidence	São Luís, BrazilHQ checked Sep 30, 2026	1,001-5,000	300 contacts →
	Indirect evidence “MA ELETROMECÂNICA, fundada em 1995 na cidade de São Luís do Maranhão, surgiu do sonho e empreendedorismo do engenheiro eletricista Marcleo Araújo, atual diretor.” Source: RevenueBase Database · checked Sep 30, 2026
8	CEL Engenharia Celenergia	Indirect evidence	Goiânia, BrazilHQ checked Sep 30, 2026	1,001-5,000	263 contacts →
	Indirect evidence “Fundada em 1992, a CEL ENGENHARIA é regida pelos princípios da ética, responsabilidade e profissionalismo; oferece serviços implementados com rigor técnico e operacional aliados…” Source: RevenueBase Database · checked Sep 30, 2026
9	Qualieng Engenharia	Indirect evidence	Diadema, BrazilHQ checked Sep 30, 2026	501-1,000	258 contacts →
	Indirect evidence “Com atuação consolidada na engenharia de montagem, a Qualieng Engenharia executa obras de instalações elétricas, hidráulicas, HVAC, sistemas de combate a incêndio e sistemas…” Source: RevenueBase Database · checked Sep 30, 2026
10	Flex Montagem Eletromecânica E Manutenção Industrial Ltda	Indirect evidence	Curitiba, BrazilHQ checked Sep 30, 2026	51-200	195 contacts →
	Indirect evidence “Empresa Nacional fundada em 2009, a Flex Montagem Eletromecânica e Manutenção Industrial LTDA, iniciou as atividades em um pequeno galpão de 500 m² através da iniciativa…” Source: RevenueBase Database · checked Sep 30, 2026
11	Eficaz Energia E Serviços Ltda	Indirect evidence	Olinda, BrazilHQ checked Sep 30, 2026	1,001-5,000	180 contacts →
	Indirect evidence “Fundada no ano de 1997 por ex-funcionários da Coelce a empresa surgiu com o propósito de atender as demandas crescentes no segmento de prestação de serviços em engenharia elétrica.” Source: RevenueBase Database · checked Sep 30, 2026
12	EIM Instalações Industriais	Indirect evidence	Fortaleza, BrazilHQ checked Sep 30, 2026	201-500	165 contacts →
	Indirect evidence “A EIM foi criada há mais de cinco décadas para oferecer à indústria soluções especializadas em montagens industriais e instalações eletromecânicas.” Source: RevenueBase Database · checked Sep 30, 2026
13	Novatec Instalações	Indirect evidence	São Paulo, BrazilHQ checked Sep 30, 2026	51-200	117 contacts →
	Indirect evidence “No mercado desde 2007, a Novatec trabalha diretamente com empresas da Construção Civil, Indústrias e Incorporadoras oferecendo serviços de Instalações Elétricas e Hidráulicas…” Source: RevenueBase Database · checked Sep 30, 2026
14	Ecoman Engenharia	Indirect evidence	Campina Grande, BrazilHQ checked Sep 30, 2026	201-500	109 contacts →
	Indirect evidence “Empresa consolidada no mercado há mais de 17 anos, com estrutura versátil e altamente profissional, atuando no cumprimento das reais necessidades de seus clientes, sejam eles…” Source: RevenueBase Database · checked Sep 30, 2026
15	AJS Indústria E Serviços	Indirect evidence	Sapucaia Do Sul, BrazilHQ checked Sep 30, 2026	51-200	106 contacts →
	Indirect evidence “A AJS INDÚSTRIA E SERVIÇOS é uma empresa especializada em fabricação, montagem e manuteção indústrial, com sede em Sapucaia do Sul, região metropolitana de Porto Alegre.” Source: RevenueBase Database · checked Sep 30, 2026
16	MP Trafos Engenharia	Indirect evidence	Volta Redonda, BrazilHQ checked Sep 30, 2026	1,001-5,000	103 contacts →
	Indirect evidence “A MP Trafos Engenharia nasceu em 1993, na cidade de Pindamonhangaba, para atender a crescente demanda por manutenção industrial especializada.” Source: RevenueBase Database · checked Sep 30, 2026
17	Tecman	Partial evidence	Rio Das Ostras, BrazilHQ checked Sep 30, 2026	51-200	91 contacts →
	Partial evidence “TECMAN is a company specialized in projects, manufacturing, installation and maintenance of electrical systems, instrumentation, automation, mechanical, steel structure, piping…” Source: RevenueBase Database · checked Sep 30, 2026
18	Terni Engenharia	Indirect evidence	Sao Paulo, BrazilHQ checked Sep 30, 2026	1,001-5,000	91 contacts →
	Indirect evidence “A Terni Engenharia Ltda, fundada em 1989, presta serviços de instalações elétricas e hidráulicas.” Source: RevenueBase Database · checked Sep 30, 2026
19	MMI Manutenção E Montagem Industrial Ltda	Indirect evidence	Serra, BrazilHQ checked Sep 30, 2026	51-200	77 contacts →
	Indirect evidence “Empresa fundada em iniciou suas atividades de fato em Junho de A partir deste marco então a MMI – Manutenção e Montagem Industrial Ltda, fez nome e fincou sua marca no mercado de…” Source: RevenueBase Database · checked Sep 30, 2026
20	P3 Engenharia Elétrica	Indirect evidence	Indaial, BrazilHQ checked Sep 30, 2026	51-200	76 contacts →
	Indirect evidence “A P3 Engenharia elétrica, está situada em Indaial, Santa Catarina.” Source: RevenueBase Database · checked Sep 30, 2026
21	Rio-Tech Engenharia Eletrometalurgia E Projetos	Indirect evidence	Sao Jose Do Rio Preto, BrazilHQ checked Sep 30, 2026	201-500	73 contacts →
	Indirect evidence “A RIO-TECH dispõe de corpo técnico especializado em soluções de engenharia, com forte atuação em diversos nichos de mercado em todo o território nacional e em diversos países.” Source: RevenueBase Database · checked Sep 30, 2026
22	Sevel Engenharia	Indirect evidence	Fortaleza, BrazilHQ checked Sep 30, 2026	51-200	72 contacts →
	Indirect evidence “A SEVEL ENGENHARIA LTDA atua, desde 1996, na prestação de serviços nas áreas de construção civil, montagem eletromecânica de subestações, instalações industriais e prediais…” Source: RevenueBase Database · checked Sep 30, 2026
23	Indumax Sistemas DE Energia	Indirect evidence	Itumbiara, BrazilHQ checked Sep 30, 2026	51-200	62 contacts →
	Indirect evidence “Na Indumax, somos especialistas em obras industriais elétricas, painéis elétricos e automação industrial, entregando soluções que impulsionam a eficiência, segurança e inovação no…” Source: RevenueBase Database · checked Sep 30, 2026
24	Eletrocamp Construções Elétricas E Civis Ltda	Indirect evidence	Pará De Minas, BrazilHQ checked Sep 30, 2026	201-500	56 contacts →
	Indirect evidence “Onde há crescimento, há energia.” Source: RevenueBase Database · checked Sep 30, 2026
25	MP Engenharia Elétrica	Indirect evidence	Piracicaba, BrazilHQ checked Sep 30, 2026	51-200	53 contacts →
	Indirect evidence “Instalações elétricas / Manutenção elétrica / Projetos elétricos / Análises e Ensaios / SPDA / Termografia / Retrofit / Montagens industriais / Automação / Treinamentos” 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: atex certified electrical contractors. 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 atex certified electrical contractors.
Partial evidence: Its own public description names part of atex certified electrical contractors, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name atex certified electrical contractors. 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 1,617 atex certified electrical contractors based in Brazil

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 1,344 reachable decision-makers.

Free signup · no credit card

View the full list →

Atex certified electrical contractors based in Brazil at a glance

As of Sep 30, 2026

8.8%Verified-email coverage

9.5Average contacts per company

1-10Median size (employees)

12.2%Largest-city concentration · Sao Paulo

Sep 30, 2026Page data refreshed

Companies by employee count

1-10

859

11-50

524

51-200

168

201-500

501-1,000

1,001-5,000

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 1,617 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 atex certified electrical contractors, 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 “atex certified electrical contractors”. 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 atex certified electrical contractors), 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 atex certified electrical contractors, 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, 1,344 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.

Atex certified electrical contractors by metro

Atex certified electrical contractors in Sao Paulo198

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 atex certified electrical contractors, 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 atex certified electrical contractors are there based in Brazil?

RevenueBase identified 1,617 atex certified electrical contractors 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?

Engeko Engenharia E Construção Ltda, headquartered in Sao Paulo, tops this list with the largest team on record.

Which city has the most atex certified electrical contractors?

Sao Paulo leads with 198 headquartered companies, followed by Rio De Janeiro (53) and Curitiba (36).

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 1,344 verified decision-maker contacts tracked across these 1,617 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.

Ready to reach these companies? Verified emails and direct dials for all 1,617 atex certified electrical contractors based in Brazil. Start with a free account, no credit card.

Download this list →

Related lists

Atex certified electrical contractors by geography

Browse the directory

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.