CNAE 4321-5/00 · Rio de Janeiro
Instalação e manutenção elétrica in Rio de Janeiro
26,593 active companies are headquartered in Rio de Janeiro with this CNAE as their main activity. They represent 8.1% of Brazil's active companies with the same main activity.
Source: Receita Federal, CNPJ Open Data · October 2026 publication
The same activity in Brazil 328,370
What this list shows
We count each active company once, by its head office in this state and this CNAE as its main activity. Branches and secondary activities are excluded from this scope. The total describes the registry, not market revenue or company quality.
- Companies in Rio de Janeiro
- 26,593
- 8.1% of Brazil's
- Of every 100 companies in Rio de Janeiro
- 1.2
- do this activity
- Among Brazil's federative units
- 3rd
- by companies in this activity
Active companies in Rio de Janeiro
More active establishments and higher registered capital first. This order is not a quality assessment or recommendation. · page 1 of 10- ELLCA 2 SERVICOS & LOCACOES LTDARio de Janeiro (RJ)
- VINIL GESTAO E FACILITIES LTDARio de Janeiro (RJ)
- SM21 ENGENHARIA E CONSTRUCOES LTDARio de Janeiro (RJ)
- YAH TELECOMUNICACOES LTDA.Rio de Janeiro (RJ)
- A ILUMINADA COMERCIO E SERVICOS DE MATERIAIS ELETRICOS E ILUMINACAO LTDANova Iguaçu (RJ)
- TEKNO SISTEMAS DE ENGENHARIA LTDARio de Janeiro (RJ)
- VERTIX ENGENHARIA LTDARio de Janeiro (RJ)
- TECAL ENGENHARIA LTDARio de Janeiro (RJ)
- LIGHT CONECTA LTDA.Rio de Janeiro (RJ)
- PRODIEL BRASIL PROJETOS DE INSTALACOES ELETRICAS LTDARio de Janeiro (RJ)
- PD7 TECH LTDARio de Janeiro (RJ)
- TELECOR INSTALACOES DE SISTEMAS LTDARio de Janeiro (RJ)
- PROEN PROJETOS ENGENHARIA COMERCIO E MONTAGENS LTDA. - EM RECUPERACAO JUDICIALRio de Janeiro (RJ)
- BRATECNICAS COMERCIAL E SERVICOS LTDARio de Janeiro (RJ)
- OKJ SERVICOS DE ENGENHARIA LTDAItaguaí (RJ)
- TECH CABLE DO BRASIL SISTEMAS DE TELECOMUNICACOES LTDAPetrópolis (RJ)
- ENGEMAR SERVICOS DE ENGENHARIA LTDARio de Janeiro (RJ)
- JMC DE ALVARENGA SOLUCOES EM ENERGIA ELETRICA LTDACampos dos Goytacazes (RJ)
- MANTENGE MANUTENCAO E REFORMAS LTDARio de Janeiro (RJ)
- ELETRICA PADRAO SERVICOS ELETRICOS E TELEFONIA LTDARio das Ostras (RJ)
- LAGUNNA COMERCIO E SERVICOS LTDABarra Mansa (RJ)
- RMVH COMERCIO DE AUDIO E VIDEO LTDARio de Janeiro (RJ)
- ELEVADORES IRIDIUM CONSERVACAO E REPAROS LTDARio de Janeiro (RJ)
- HASHIMOTO SOLUCOES EM ENERGIA LTDADuque de Caxias (RJ)
- PRAZ SOLUTIONS MONTAGEM E MANUTENCAO INDUSTRIAL E SERVICOS LTDANova Iguaçu (RJ)
- ELETROMOTTA MANUTENCAO E INSTALACOES ELETRICAS LTDADuque de Caxias (RJ)
- VARD ELECTRO BRAZIL (INSTALACOES ELETRICAS) LTDA.Niterói (RJ)
- POWER VOLT COMERCIO INSTALACAO E MANUTENCAO LTDARio de Janeiro (RJ)
- ELETRO FORMA LTDARio de Janeiro (RJ)
- SUNFOR RIO ENERGIA ENGENHARIA E PROJETOS LTDARio de Janeiro (RJ)
List limited to 300 companies, 30 per page. Looking for a specific company? Search by name or CNPJ.
How to assess a company's data
When you open a company's record, use these guides to check the data and understand what each field can establish.
- How to look up a CNPJ
Check identifiers, dates and registry fields against official sources.
- What an active CNPJ means
Active status does not show that a company is debt-free, licensed or able to operate.
- How to read partner and administrator records
Understand QSA roles and the limits on ownership and representation information.
How much the activity weighs
of every 100 active companies, how many do this activity
- Rio de Janeiro1.2
- Brazil1.2
In Rio de Janeiro, the activity weighs what it does in Brazil.
Rio de Janeiro's cities with the most companies in this activity
active companies and each city's share of the state
- 1 Rio de Janeiro 39.7% 10,569
- 2 São Gonçalo 6.4% 1,710
- 3 Nova Iguaçu 5.1% 1,365
- 4 Duque de Caxias 4.7% 1,242
- 5 Niterói 3.3% 888
- 6 Petrópolis 2.9% 759
- 7 Belford Roxo 2.5% 661
- 8 Campos dos Goytacazes 2.3% 605
- 9 São João de Meriti 2.2% 572
- 10 Maricá 2.1% 557
20 more cities
- 11 Cabo Frio 438
- 12 Itaboraí 394
- 13 Macaé 363
- 14 Teresópolis 343
- 15 Volta Redonda 337
- 16 Magé 329
- 17 Angra dos Reis 321
- 18 Rio das Ostras 307
- 19 Mesquita 292
- 20 Nova Friburgo 287
- 21 Barra Mansa 231
- 22 Araruama 227
- 23 Queimados 220
- 24 Nilópolis 209
- 25 Resende 208
- 26 Saquarema 193
- 27 São Pedro da Aldeia 192
- 28 Itaguaí 164
- 29 Itaperuna 162
- 30 Japeri 128
Class 4321-5 in Rio de Janeiro
instalações elétricas, by subclassClose to this: 4322-3/01 · Instalações hidráulicas, sanitárias e de gás, 3,997 companies in Rio de Janeiro.
What activity 4321-5/00 is
- A instalação, alteração, manutenção e reparo em todos os tipos de construções de: #- sistemas de eletricidade (cabos de qualquer tensão, fiação, materiais elétricos, etc.) #- cabos para instalações telefônicas e de comunicações #- cabos para redes de informática e televisão a cabo, inclusive por fibra óptica #- antenas coletivas e parabólicas #- pára-raios #- sistemas de iluminação #- sistemas de alarme contra incêndio #- sistemas de alarme contra roubo #- sistemas de controle eletrônico e automação predial
- A instalação de equipamentos elétricos para aquecimento
Frequently asked questions
How many companies have main CNAE 4321-5/00 in Rio de Janeiro?
26,593 active companies have CNAE 4321-5/00 as their main activity in Rio de Janeiro, according to the Receita Federal's October 2026 publication. That is 1.2 of every 100 companies there, against 1.2 in Brazil.
Which of Rio de Janeiro's cities has the most companies in this activity?
Rio de Janeiro, with 10,569, 39.7% of the state's companies in this activity.
Why can this total differ from the companies operating in this state?
This scope counts active companies by their head office and registered main activity. A company may operate in this state through a branch or carry out the activity as a secondary activity and be excluded from the count. The registered address and CNAE do not establish every operating location or service.
Does active status mean a company is qualified for a contract?
No. Active status describes the Receita Federal registration. It does not establish tax compliance, creditworthiness, licences, ability to fulfil a contract or quality. Check the relevant official documents and the contract's requirements.
How we count
Active companies with this as their main activity, counted by head office in Rio de Janeiro.