Disjuntor Miniatura CQB2-40
O CQB2-40 miniature circuit breaker provides overload and short-circuit protection within the published 10A–40A range. Its verified product data lists 4.5kA Icn, 1P+N and B / C / D. Final selection must match the conductor, load, prospective fault current, installation system and applicable local rules.
Visão Geral do Produto
CQB2-40 is a 4.5kA Icn miniature circuit breaker covering 10A–40A. It is available with 1P+N and B / C / D trip options as stated in the product data.
The model data references IEC 60898-1; GB/T 10963.1 and lists CCC certification. Standards, certification scope and technical documents must be confirmed for the ordered configuration and destination market.
Principais Características
Aplicações Típicas
It is intended for AC distribution circuits where the selected current rating, curve, pole arrangement and breaking capacity match the conductor and system study. Typical project contexts include residential, commercial and light-industrial final distribution; suitability depends on the actual circuit rather than the application label alone.
Guia de Candidaturas e Seleção
Use the product-specific values below as a shortlist, then validate the complete circuit design. Product ratings do not replace a fault-current study, conductor calculation, coordination review or applicable installation rules.
| Ponto de seleção | CQB2-40 option | O que o projeto deve confirmar |
|---|---|---|
| Corrente nominal | 10A–40A | Coordinate with design current, conductor ampacity, ambient temperature and grouping |
| curva de disparo | B / C / D | Choose for load inrush and required fault-clearing performance, not by current alone |
| Capacidade de corte | 4.5kA Icn | Confirm against the prospective short-circuit current at the installation point |
| Pole arrangement | 1P+N | Match supply system and local switching or isolation rules |
| Installation interface | DIN-rail installation | Check enclosure, rail/base, terminal and conductor compatibility |
Breaking Capacity
4.5kA Icn is the published product value. Confirm the prospective short-circuit current at the installation point.
Trip and Load Behaviour
B / C / D is the available trip/protection option. Match it to load inrush and required disconnection performance.
Pole Configuration
Available arrangement: 1P+N. Confirm which conductors must be switched and protected under local rules.
MCB or RCBO
An MCB does not replace residual-current protection where an RCD or RCBO is required.
Guia de Encomenda
- Specify the exact model: CQB2-40.
- State the required current rating within 10A–40A.
- Confirm pole arrangement: 1P+N.
- Confirm trip or protection option: B / C / D.
- Provide system voltage, expected fault level, destination market, quantity and any document requirements.
Verificações de Instalação e Coordenação
- Verify conductor material and cross-section against the circuit calculation and the published terminal range.
- Confirm the prospective short-circuit current does not exceed the applicable breaking rating.
- Check upstream/downstream coordination, enclosure temperature, grouping, altitude and required clearances.
- A instalação, isolamento, teste e manutenção devem ser efetuados por pessoal qualificado ao abrigo das normas aplicáveis.
Designação do tipo
Curvas de disparo
Dimensions(unit:mm)
Especificações Técnicas
| Parâmetro | |
| Tensão nominal | 230V~ (1P+N) |
| Corrente nominal | 10A, 16A, 20A, 25A, 32A, 40A |
| Número de polos | 1P+N |
| Rated short circuit breaking capacity (Icn) | 4500 A |
| Vida mecânica | ≥ 10,000 operations |
| Vida elétrica | ≥ 10,000 operations |
| Curvas de disparo | B, C, D |
| Tightening torque | 1.5 N·m |
| Pollution degree | 2 |
| Grau de proteção | IP20 |
| Categoria de sobretensão | Ⅱ |
| Normas | IEC 60898-1, GB/T 10963.1 |
| Certificação | CCC |
Table 1 Tripping characteristics (Reference temperature 30℃)
| Artigo | Curva de disparo | Corrente de teste In(A) | Estado Inicial | Prazo para tropeçar ou não tropeçar | Resultado esperado | Observações |
| a | B, C, D | 1,13ln | Frio | t≤1h | Não disparável | Current smoothly rises to specified value within 5s |
| b | B, C, D | 1.45ln | Following item a test | t<1h | Viagem | |
| c | B, C, D | 2.55ln | Frio | 1s<t<60s(ln≤32A) 1s<t<120s(ln>32A) |
Viagem | |
| d | B | 3In | Frio | t≤0,1s | Não disparável | Ligue a fonte de alimentação fechando o interruptor auxiliar |
| C | 5In | |||||
| D | 10ln | |||||
| e | B | 5In | Frio | t<0,1s | Viagem | Ligue a fonte de alimentação fechando o interruptor auxiliar |
| C | 10ln | |||||
| D | 20ln |
Nota: O termo “a frio” significa que o ensaio é efetuado a uma temperatura de calibração de referência, sem carga, antes do ensaio.
Requisitos e secção transversal do condutor
| Secção transversal de cobre (mm²) | Corrente nominal In(A) |
| 1 | Em ≤ 6 |
| 1.5 | 6 In≤13 |
| 2.5 | 13 In≤20 |
| 4 | 20 In≤25 |
| 6 | 25 In≤32 |
| 10 | 32 In≤50 |
Porquê escolher a CHAC
Com mais de 30 anos de experiência em fabrico, mais de 1100 funcionários, mais de 100 milhões de postes
Com uma capacidade anual e um processo de produção automatizado 90%, a CHAC garante uma capacidade de produção estável e rigorosos
Controlo de qualidade para clientes OEM/ODM globais. O nosso sistema de fabrico interno suporta a longo prazo
cooperação para marcas elétricas, importadores e distribuidores.
30+
ANOS DE EXPERIÊNCIA
Especializado em fabrico de baixa tensão elétrica
1100+
FUNCIONÁRIOS
Equipa profissional garante qualidade e entrega estáveis
100M+
CAPACIDADE ANUAL DE POSTOS
Capacidade de produção em larga escala para satisfazer a procura global
90%
PRODUÇÃO AUTOMATIZADA
Automação avançada para alta eficiência e consistência
Linha de Montagem Automatizada
Laboratório de Ensaios
Injeção e Estampagem
Inspeção de Qualidade
Um rigoroso sistema de controlo de qualidade garante que cada produto cumpre as normas globais.
O que podemos personalizar?
For CQB2-40 projects, CHAC can review private-label marking, packaging, appearance, available electrical configurations and technical-document requirements. Requests outside the published range are subject to engineering evaluation, testing, MOQ and project feasibility.
Logótipo e Identidade Visual
Private-label marking and nameplate options are subject to artwork review and sample approval.
Embalagem
Personalização
Cartons, labels and manuals can be prepared for the approved order specification and destination market.
Elétrico
Personalização
Select from the published 10A–40A, 1P+N and B / C / D options; non-standard requests require technical evaluation.
Produto
Aparência
Appearance options can be reviewed subject to tooling, MOQ, marking requirements and technical feasibility.
Certificação
Apoio
Datasheets, drawings and verified certificate information are supplied for the applicable approved configuration.
Engenharia
Desenvolvimento
Project support may include drawing review, sample evaluation, testing and production planning, subject to technical approval.
Transferir
Disjuntor Miniature Série CQB2
Visão geral completa de componentes elétricos de baixa tensão e referência para seleção de produtos.
Precisa de Documentos Técnicos?
Contacte-nos para folhas de dados, certificados, desenhos, orientação de seleção ou suporte a projetos OEM/ODM.
CQB2-40 Product FAQ
What is a 1P+N miniature circuit breaker?
A 1P+N device switches the phase and neutral together while the protected pole arrangement follows the product design. CQB2-40 is a compact 230V AC, 1P+N MCB for overload and short-circuit protection within its published 10A–40A range.
Is a 1P+N breaker the same as a 2P breaker?
Not necessarily. The switching and protection arrangements can differ even though both devices occupy two conductor positions. Confirm which poles are protected and switched, plus the neutral and isolation requirements of the project.
What does the CQB2-40 miniature circuit breaker protect?
It protects against overload and short circuit. It does not provide residual-current protection, so a separate RCD or a suitable RCBO must be evaluated when leakage protection is required.
How does the CQB2-40 MCB trip?
Its thermal element responds to sustained overcurrent and its magnetic mechanism responds to higher fault current. The available B, C and D curves have different instantaneous-trip behavior and must be matched to load inrush and fault conditions.
Why choose a compact 1P+N MCB?
A compact 1P+N arrangement can support linked phase-and-neutral switching in a single-phase distribution design. Selection still depends on system rules, enclosure space, 4.5kA Icn suitability and the exact circuit requirements.
Can the CQB2-40 be used in every market?
No product should be assumed acceptable in every market. CQB2-40 references IEC 60898-1 and GB/T 10963.1, with CCC listed; the buyer must confirm the required approval, documentation and local installation rules for the destination.
Confirm the Right CQB2-40 Configuration
Send your current rating, pole arrangement, trip option, system voltage, prospective fault level, destination market and quantity. CHAC will review the request against the published product range.
