CQB2LE-63 Residual Current Circuit Breaker with Overcurrent Protection – Electronic Type
CQB2LE-32/40/63/125 series residual current operated circuit breakers are mainly suitable for lines with AC 50Hz, rated working voltage 230V/400V, and rated current up to 32A/40A/63A/125A. When a person is electrocuted or the leakage current of the power grid exceeds the specified value, the residual current operated circuit breaker can quickly cut off the power supply in a very short time to protect the safety of people and electrical equipment. The product also has overload, short circuit, and can be equipped with undervoltage and overvoltage protection functions. Under normal circumstances, the product can also be used for infrequent connection, disconnection and conversion of lines.It is suitable for various places such as industry, commerce, high-rise and residential buildings.
Product Overview
The CQB2LE-32 series residual current operated circuit breaker is meticulously designed by CHAC Electric to meet the customization requirements of international clients in the low-voltage electrical sector. As a proficient contract manufacturer with extensive export expertise, we are dedicated to delivering high-quality and reliable products. These electronic leakage MCBs are perfect for AC 50Hz distribution systems with a rated voltage of 230V/400V and a rated current up to 32A. When a person gets an electric shock or the grid leakage current exceeds the specified value, the residual current operated circuit breaker can rapidly cut off the power supply within an extremely short time, protecting the safety of people and electrical equipment. The product also has overload and short-circuit protection functions, as well as optional under-voltage and over-voltage protection functions. In normal conditions, it can also be used as a device for infrequent connection, disconnection, and conversion of lines. Our CQB2LE-32 series stands out due to advanced technology and strict quality control. We utilize cutting-edge production equipment and adhere to strict quality inspection standards to ensure each unit meets the highest performance levels. Our commitment to innovation and precision ensures that these circuit breakers operate efficiently and reliably, even under demanding electrical conditions. This makes them an ideal choice for customers seeking robust and durable electrical protection solutions in diverse distribution applications. Moreover, as a professional customization service provider, we understand the unique needs of our international clients. We offer flexible customization options, from product design and specifications to packaging and branding, enabling our clients to tailor the products to their specific market requirements. Our efficient production processes and stringent quality management systems guarantee timely delivery of premium-quality products, helping our clients stay ahead in the competitive global market.
Overview and applications
Caraterísticas do Produto
■ Balanced performance: 63A rating with 6000A breaking capacity
■ Fast protection: ≤0.1s tripping time for quick fault isolation
■ Flexible application: 2P to 4P options for single/three-phase systems
■ Easy installation:Standard size for simple integration
Especificação de Encomenda
Please specify the following when ordering:
1.Product Model: CQB2LE-63
2.Number of Poles: 1P+N, 2P,3P,3P+N, 4P
3. Corrente Nominal e Curva de Disparo: [e.g.: C/32A]
- Tripping Curve:B,C,D
- Rated Current (In): 6A, 10A, 16A, 20A, 25A, 32A, 40A,50A,63A
4.Rated Residual Operating Current (IAn): 30mA, 50mA,100mA,300mA
5.Quantidade: [ex: 100 unid.]
Exemplo de Pedido:
CQB2LE-63 2P C/32A 30mA 100 pcs
Designação do tipo

Curvas de disparo

Dimensões (mm)

| Poles | L |
| 1P+N | 53.4 |
| 2P | 71.2 |
| 3P | 102.4 |
| 3P+N | 115.8 |
| 4P | 133.6 |
Especificações Técnicas
| Parâmetro | |
| Rated voltage | 230V~ (2P, 1P+N) / 400V~ (3P, 4P, 3P+N) |
| Rated current | 6A, 10A, 16A, 20A, 25A, 32A, 40A, 50A, 63A |
| Número de polos | 2P, 3P, 4P, 1P+N, 3P+N |
| Rated breaking capacity (Icn = Ics) | 6000 A |
| Rated residual operating current (IΔn) | 30, 50, 100, 300 mA |
| Rated residual non-operating current | 0.5 IΔn |
| Rated residual making and breaking capacity | 2000 A |
| Tripping time | ≤ 0.1 s |
| Mechanical life | 4000 operations |
| Electrical life | 4000 operations |
| Curvas de disparo | B, C, D |
| Degree of protection | IP20 |
| Overvoltage category | Ⅲ |
| Standards | IEC 61009-1, GB/T 16917.1 |
| Certificação | CCC |
Tripping characteristics (Reference temperature 30°C)
| Item | Tripping Curve | Test current In(A) | Initial Status | Time limit for tripping or non-tripping | Expected result | Remarks |
| Delay | ≤63 | Cold | 1.13In | ≤1h | Non-tripping | |
| Delay | ≤63 | Following previous test | 1.45In | <1h | Tripping | Current smoothly rises to specified value in 5s |
| Delay | ≤32 | Cold | 2.55In | 1<t<60s | Tripping | |
| Delay | >32 | Cold | 2.55In | 1<t<120s | Tripping | |
| Instantaneous | Any value | Cold | 3, 5, 10In | ≤0.1s | Non-tripping | B, C, D |
| Instantaneous | Any value | Cold | 5, 10, 20In | <0.1s | Tripping | B, C, D |
Note: The term “cold” means that the test is carried out at a reeference calibration temperature without load before the test.
Requisitos e secção transversal do condutor
| Secção transversal de cobre(mm²2) | Corrente nominal In(A) |
| 1 | In≤6 |
| 1.5 | 6<Em≤13 |
| 2.5 | 13<in≤20</in≤20 |
| 4 | 20<Em≤25 |
| 6 | 25<In≤32 |
| 10 | 32<In≤50 |
| 16 | 50<In≤63 |
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?
We support customization across branding, packaging, product appearance,
electrical specifications, certification requirements and engineering development. Whether customers
need private label products, market-specific parameters or new product development, CHAC can provide
flexible solutions based on project requirements.
Logótipo e Identidade Visual
Impressão de logótipos personalizados, marcação a laser e soluções de placas de identificação.

Embalagem
Personalização
Caixas, embalagens, etiquetas e manuais personalizados com cores.

Elétrico
Personalização
Current, voltage, breaking capacity, trip curve and other
special functions.

Produto
Aparência
Cor da caixa, cor da pega e personalização da aparência.

Certificação
Apoio
Products comply with international standards and market
requirements.

Engenharia
Desenvolvimento
Avaliação do desenho, teste do protótipo e produção em massa.

Transferir
CQB2 Series Miniature Circuit Breaker
Complete product overview for low-voltage electrical components and product selection reference.
Need Technical Documents?
Contact us for datasheets, certificates, drawings, selection guidance or OEM/ODM project support.
Frequently Asked Questions
Q1. Apoia a personalização de produtos com base nos nossos requisitos de design?
A1:Absolutely. We specialize in OEM and ODM cooperation in the low-voltage electrical field and have provided customized services for many internationally renowned companies. We offer full-process support, including R&D design, parameter adjustments, and special material selection, ensuring the product fully meets your requirements.
Q2: Qual é a sua capacidade de produção e Quantidade Mínima de Encomenda (QME)?
A2: We operate a highly automated production base with an annual output of over 100 million poles for miniature circuit breakers. Our MOQ policy is flexible. We can provide competitive trial orders for small batches and dedicated production capacity guarantee plans.
Q3: Que garantias existem para a qualidade e certificações do produto?
A3: Our main products are certified with CCC, CE, CB, and more, and are sold in over 30 countries and regions worldwide. The company has established a dedicated Quality Operations Center that works with the business and production departments to implement full-process quality control, ensuring products meet international standards.
Q4: Do you have the capability for product R&D and turning concepts into reality?
A4: We have a complete R&D team and digital workshops, backed by extensive customization experience serving numerous international clients. From concept proposal and sample development to mass production, we provide end-to-end technical support to help bring your ideas to life.





