Interruptor automático en miniatura CQB2-40
El 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.
Descripción del producto
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.
Características clave
Aplicaciones 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.
Guía de Solicitudes y Selección
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.
| Punto de selección | CQB2-40 option | Lo que el proyecto debe confirmar |
|---|---|---|
| Corriente 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 |
| Capacidad 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.
Guía de pedidos
- 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.
Comprobaciones de Instalación y Coordinación
- 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.
- La instalación, el aislamiento, las pruebas y el mantenimiento deben ser realizados por personal cualificado de conformidad con las normas aplicables.
Designación del tipo
Curvas de disparo
Dimensions(unit:mm)
Especificaciones técnicas
| Parámetro | |
| Voltaje nominal | 230V~ (1P+N) |
| Corriente nominal | 10A, 16A, 20A, 25A, 32A, 40A |
| Número de polos | 1P+N |
| Rated short circuit breaking capacity (Icn) | 4500 A |
| Vida mecánica | ≥ 10,000 operations |
| Vida eléctrica | ≥ 10,000 operations |
| Curvas de disparo | B, C, D |
| Tightening torque | 1.5 N·m |
| Pollution degree | 2 |
| Grado de protección | IP20 |
| Categoría de sobretensión | Ⅱ |
| Estándares | IEC 60898-1, GB/T 10963.1 |
| Certificación | CCC |
Table 1 Tripping characteristics (Reference temperature 30℃)
| Artículo | Curva de disparo | Prueba corriente en (A) | Estado inicial | Límite de tiempo para disparar o no disparar | Resultado esperado | Observaciones |
| a | B, C, D | 1,13 ln | Frío | t ≤ 1 h | No desatascador | La corriente sube suavemente al valor especificado en 5s |
| b | B, C, D | 1.45ln | Siguiendo el ítem una prueba | t<1h | Tropezando | |
| c | B, C, D | 2,55 ln | Frío | 1s<t<60s(ln≤32A) 1s<t<120s(ln>32A) |
Tropezando | |
| d | B | 3En | Frío | t ≤ 0,1 s | No desatascador | Enciende la fuente de alimentación cerrando el interruptor auxiliar |
| C | 5In | |||||
| D | 10ln | |||||
| e | B | 5In | Frío | t<0,1s | Tropezando | Enciende la fuente de alimentación cerrando el interruptor auxiliar |
| C | 10ln | |||||
| D | 20ln |
Nota: El término “en frío” significa que la prueba se realiza a una temperatura de calibración de referencia sin carga antes de la prueba.
Requisitos del conductor y sección transversal
| Sección transversal de cobre (mm²) | Corriente nominal In(A) |
| 1 | En≤6 |
| 1.5 | 6 In≤13 |
| 2.5 | 13 In≤20 |
| 4 | 20 In≤25 |
| 6 | 25 In≤32 |
| 10 | 32 In≤50 |
¿Por qué elegir CHAC?
Con más de 30 años de experiencia en fabricación, más de 1100 empleados, más de 100 millones de postes
Con una capacidad anual y un proceso de producción automatizado 90%, CHAC ofrece una capacidad de producción estable y un estricto
control de calidad para clientes OEM/ODM globales. Nuestro sistema de fabricación interno respalda a largo plazo
Cooperación para marcas eléctricas, importadores y distribuidores.
30+
AÑOS DE EXPERIENCIA
Especializado en fabricación eléctrica de bajo voltaje
1100+
EMPLEADOS
Equipo profesional garantiza calidad y entrega estables
100M+
CAPACIDAD ANUAL DE LOS POLOS
Capacidad de producción a gran escala para satisfacer la demanda mundial
90%
PRODUCCIÓN AUTOMATIZADA
Automatización avanzada para alta eficiencia y consistencia
Línea de ensamblaje automatizada
Laboratorio de pruebas
Inyección y Estampado
Inspección de calidad
Un estricto sistema de control de calidad garantiza que cada producto cumpla con los estándares mundiales.
¿Qué 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.
Logotipo y marca
Private-label marking and nameplate options are subject to artwork review and sample approval.
Empaquetado
Personalización
Cartons, labels and manuals can be prepared for the approved order specification and destination market.
Eléctrico
Personalización
Select from the published 10A–40A, 1P+N and B / C / D options; non-standard requests require technical evaluation.
Producto
Apariencia
Appearance options can be reviewed subject to tooling, MOQ, marking requirements and technical feasibility.
Certificación
Apoyo
Datasheets, drawings and verified certificate information are supplied for the applicable approved configuration.
Ingeniería
Desarrollo
Project support may include drawing review, sample evaluation, testing and production planning, subject to technical approval.
Descargar
Interruptor automático en miniatura serie CQB2
Descripción general completa de componentes eléctricos de bajo voltaje y referencia para la selección de productos.
¿Necesita documentos técnicos?
Contáctenos para obtener hojas de datos, certificados, planos, orientación de selección o soporte para proyectos 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.
