Company lists · Data refreshed September 2026

Top 25 Electrical system testing companies based in Brazil

Name: Electrical system testing companies based in Brazil
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 372 companies tracked

RevenueBase identified 372 electrical system testing companies headquartered in Brazil as of September 2026 and tracks 1,995 professional contacts across them, including 91 with verified work emails. Sao Paulo is the largest hub.

This list covers electrical system testing companies 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 19, 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 19, 2026 86% judged on-target in blind review

372Companies

1,995Contacts tracked

91Verified emails

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The 25 largest electrical system testing companies based in Brazil

Ranked by team size

Top 25 of 372 electrical system testing companies based in Brazil, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to electrical system testing companies: 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	Automasul	Indirect evidence	Passo Fundo, BrazilHQ checked Sep 19, 2026	201-500	148 contacts →
	Indirect evidence “A Automasul foi fundada em 01 de maio de Uma empresa com idéias e objetivos claros, veio de modo empreendedor desenvolver continuamente soluções pra seus clientes, através de…” Source: RevenueBase Database · checked Sep 19, 2026
2	Brasil Inspeção DE Equipamentos Industriais	Indirect evidence	Araxá, BrazilHQ checked Sep 19, 2026	51-200	62 contacts →
	Indirect evidence “Empresa dedicada à realização de serviços de inspeção de equipamentos industriais, especialista em ensaios não destrutivos, inspeções periódicas de segurança e avaliações de…” Source: RevenueBase Database · checked Sep 19, 2026
3	MP Engenharia Elétrica	Indirect evidence	Piracicaba, BrazilHQ checked Sep 19, 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 19, 2026
4	On7 Engenharia	Indirect evidence	Blumenau, BrazilHQ checked Sep 19, 2026	51-200	45 contacts →
	Indirect evidence “ON7 Engenharia \| Excelência em projetos de engenharia elétrica Com mais de 20 anos de expertise, a ON7 Engenharia é reconhecida pelo atendimento especializado no setor de…” Source: RevenueBase Database · checked Sep 19, 2026
5	Ferreira Neves Engenharia & Consultoria	Indirect evidence	Jundiaí, BrazilHQ checked Sep 19, 2026	11-50	18 contacts →
	Indirect evidence “Há mais de 20 anos, oferecemos consultoria e assessoria em inspeções, laudos e testes de equipamentos e instalações.” Source: RevenueBase Database · checked Sep 19, 2026
6	Turbo Drive Manutencao E Consultoria	Indirect evidence	Jaragua Do Sul, BrazilHQ checked Sep 19, 2026	11-50	17 contacts →
	Indirect evidence “Fundada em 2005 em Jaraguá do Sul - SC, a TURBO DRIVE MANUTENÇÃO E CONSULTORIA LTDA, tem como missão, fornecer a seus clientes produtos e serviços especializados na área de…” Source: RevenueBase Database · checked Sep 19, 2026
7	Eletrofase	Indirect evidence	Ribeirão Preto, BrazilHQ checked Sep 19, 2026	11-50	17 contacts →
	Indirect evidence “A Eletrofase é a parceira ideal em engenharia elétrica, consolidada ao longo dos anos pela entrega de soluções personalizadas e de alto impacto para o setor industrial e comercial.” Source: RevenueBase Database · checked Sep 19, 2026
8	ILM Engenharia Elétrica	Indirect evidence	Goiânia, BrazilHQ checked Sep 19, 2026	1-10	16 contacts →
	Indirect evidence “A ILM Engenharia Elétrica é uma empresa de prestação de serviços especializados atuante nas seguintes áreas: Estudos Elétricos- Curto-Circuito - Fluxo de Potência - Transitórios…” Source: RevenueBase Database · checked Sep 19, 2026
9	Dpst Desenvolvimento E Planejamento EM Segurança DO Trabalho	Indirect evidence	Agudos, BrazilHQ checked Sep 19, 2026	1-10	12 contacts →
	Indirect evidence “A DPST surgiu em como uma unidade em Agudos-SP, e rapidamente se tornou uma empresa líder no mercado nacional de segurança no trabalho e engenharia.” Source: RevenueBase Database · checked Sep 19, 2026
10	Acko Energy Solutions	Indirect evidence	Macaé, BrazilHQ checked Sep 19, 2026	11-50	12 contacts →
	Indirect evidence “Fundada em 2016, a Acko Energy Solutions é especializada em reparos, manutenção e instalação de equipamentos elétricos na área naval e industrial, a qual possui engenheiros e…” Source: RevenueBase Database · checked Sep 19, 2026
11	Gensep	Indirect evidence	Mirassol, BrazilHQ checked Sep 19, 2026	1-10	10 contacts →
	Indirect evidence “Fundada em 2014, a Gensep é uma empresa de engenharia elétrica especializada em sistemas elétricos de potência, com atuação em proteção, controle e automação.” Source: RevenueBase Database · checked Sep 19, 2026
12	Solugy Engenharia	Indirect evidence	Curvelo, BrazilHQ checked Sep 19, 2026	11-50	9 contacts →
	Indirect evidence “A Solugy desenvolve soluções elétricas que são pensadas para entregar máxima eficiência e segurança para o seu empreendimento.” Source: RevenueBase Database · checked Sep 19, 2026
13	Power Works	Indirect evidence	Santos, BrazilHQ checked Sep 19, 2026	11-50	9 contacts →
	Indirect evidence “A POWER WORKS ®, foi fundada em 09/06/2003 para ser uma empresa de Engenharia Elétrica com atuação na área de prestação de serviços em engenharia de campo, comissionamentos…” Source: RevenueBase Database · checked Sep 19, 2026
14	AMP Metrologia	Indirect evidence	Sao Paulo, BrazilHQ checked Sep 19, 2026	1-10	8 contacts →
	Indirect evidence “Calibração, Teste de Segurança Elétrica, Qualificação Térmica e Manutenções Preventivas.” Source: RevenueBase Database · checked Sep 19, 2026
15	NSB Engenharia	Indirect evidence	Sao Paulo, BrazilHQ checked Sep 19, 2026	1-10	8 contacts →
	Indirect evidence “Fundada em 1997 com foco em soluções de Engenharia Elétrica para Sistemas industriais, a SMARTTECH ELÉTRICA, agora NSB ENGENHARIA, conta com uma equipe de Engenheiros altamente…” Source: RevenueBase Database · checked Sep 19, 2026
16	S&r Energy	Indirect evidence	Americana, BrazilHQ checked Sep 19, 2026	1-10	7 contacts →
	Indirect evidence “Foco de atuação no Sistema Elétrico de Potência (SEP), abrangendo principalmente sistemas de proteção e controle.” Source: RevenueBase Database · checked Sep 19, 2026
17	Safegrid	Indirect evidence	Itajubá, BrazilHQ checked Sep 19, 2026	1-10	7 contacts →
	Indirect evidence “Somos a SafeGrid, especialistas em comissionamento, ensaios e diagnóstico de equipamentos elétricos.” Source: RevenueBase Database · checked Sep 19, 2026
18	M&w Energy	Indirect evidence	Belo Horizonte, BrazilHQ checked Sep 19, 2026	11-50	6 contacts →
	Indirect evidence “Somos uma das melhores empresas de manutenção e instalação em subestação de energia conforme norma vigente de segurança em instalação e serviços em eletricidade, de Minas Gerais.” Source: RevenueBase Database · checked Sep 19, 2026
19	APR Service Power	Indirect evidence	Campinas, BrazilHQ checked Sep 19, 2026	11-50	6 contacts →
	Indirect evidence “Procurando inovar e sempre atender de forma profissional e ética os nossos clientes e fornecedores, a APR POWER procura sempre melhorar e estar andando em conjunto com as…” Source: RevenueBase Database · checked Sep 19, 2026
20	Grupo D.S.F Engenharia	Indirect evidence	São Paulo, BrazilHQ checked Sep 19, 2026	11-50	6 contacts →
	Indirect evidence “D.S.F Engenharia \| Engenharia Elétrica com Excelência, Estratégia e Resultado Fundada em 2013, a D.S.F Engenharia atua no mercado de engenharia elétrica oferecendo consultoria…” Source: RevenueBase Database · checked Sep 19, 2026
21	Eleva Electric	Partial evidence	Balneário Camboriú, BrazilHQ checked Sep 19, 2026	1-10	5 contacts →
	Partial evidence “A Eleva Electric destaca-se atuando no segmento de ensaios elétricos em equipamentos de pátio em subestações de alta tensão.” Source: RevenueBase Database · checked Sep 19, 2026
22	Thunder Engenharia	Indirect evidence	Fortaleza, BrazilHQ checked Sep 19, 2026	11-50	5 contacts →
	Indirect evidence “A THUNDER ENGENHARIA LTDA é uma empresa de Engenharia Elétrica de manutenção e serviços técnicos especializados em Alta e Média que preza pela qualidade dos serviços oferecidos…” Source: RevenueBase Database · checked Sep 19, 2026
23	DE Lucca Engenharia	Indirect evidence	Londrina, BrazilHQ checked Sep 19, 2026	1-10	5 contacts →
	Indirect evidence “Somos um empresa especializada consultoria e auditoria em engenharia elétrica, no qual trabalha de forma integrada com nosso clientes fazendo parte da equipe visando resultado.” Source: RevenueBase Database · checked Sep 19, 2026
24	RMS Energy Service	Indirect evidence	São Joaquim Da Barra, BrazilHQ checked Sep 19, 2026	1-10	5 contacts →
	Indirect evidence “A RMS Energy Service oferece soluções especializadas em engenharia elétrica para sistemas elétricos de potência.” Source: RevenueBase Database · checked Sep 19, 2026
25	Zeitounian Tecnologia	Indirect evidence	Itapevi, BrazilHQ checked Sep 19, 2026	1-10	5 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 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: electrical system testing companies. 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 electrical system testing companies.
Partial evidence: Its own public description names part of electrical system testing companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name electrical system testing companies. 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 372 electrical system testing companies based in Brazil

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Electrical system testing companies based in Brazil at a glance

As of Sep 19, 2026

4.6%Verified-email coverage

5.4Average contacts per company

1-10Median size (employees)

14.8%Largest-city concentration · Sao Paulo

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

224

11-50

115

51-200

201-500

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 372 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 electrical system testing companies, 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 “electrical system testing companies”. 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 electrical system testing companies), 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 electrical system testing companies, 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, 91 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 19, 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.

Electrical system testing companies by metro

Electrical system testing companies in Sao Paulo55

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 electrical system testing companies, 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 electrical system testing companies are there based in Brazil?

RevenueBase identified 372 electrical system testing companies 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?

Automasul, headquartered in Passo Fundo, tops this list with the largest team on record.

Which city has the most electrical system testing companies?

Sao Paulo leads with 55 headquartered companies, followed by Curitiba (14) and Rio De Janeiro (14).

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 91 verified decision-maker contacts tracked across these 372 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 19, 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.