Fabricante OEM de Disjuntor de Caixa Moldada (MCCB) Padrão CQM6
O CQM6 MCCB provides overload and short-circuit protection within its published 10–1250A range. Specification should follow the system voltage, load, conductor coordination, prospective fault current and applicable rules—not the ampere value alone.
Visão Geral do Produto
CQM6 is a mccb breaker for AC 400/415V distribution and protection applications. Its published range covers 10–1250A with 2P / 3P / 4P options. Selection depends on the complete power-system design, including fault level, coordination, conductor ampacity, enclosure conditions and local rules.
The saved model record lists IEC/EN 60947-1/-2/-3/-4 and GB/T 14048 references listed on the page as the applicable standard reference. No certification claim is added beyond the model record.
Principais Características
Aplicações Típicas
Typical applications include commercial, industrial and infrastructure distribution or motor circuits. These are evaluation contexts rather than universal approvals. Confirm the exact frame, voltage, breaking duty, trip unit, accessories and installation method before specification.
Guia de Candidaturas e Seleção
Use the verified CQM6 values below to create a shortlist, then validate the complete circuit. An MCCB rating does not replace conductor calculations, fault-current analysis, coordination review or local installation requirements.
| Ponto de seleção | CQM6 reference | O que o projeto deve confirmar |
|---|---|---|
| Corrente nominal | 10–1250A | Design current, conductor ampacity, installation method, temperature and grouping |
| Tensão | AC 400/415V | Sistema de alimentação e classificação de equipamento |
| Polacos | 2P / 3P / 4P | Live conductors and neutral treatment |
| Trip / protection | thermal-magnetic trip | Load profile, fault response and coordination |
| Capacidade de corte | C/S/M/H classes up to 75kA, according to frame and ordered configuration | Prospective short-circuit current at the installation point |
Fixed vs Adjustable Protection
A fixed thermal-magnetic device can suit a stable design, while an adjustable trip unit may help coordination when the project study requires field settings.
Trip Coordination
Compare MCCB Options →
MCCB vs MCB
An MCCB is normally evaluated for higher current, fault duty or accessory flexibility; an MCB may be more suitable for compact final circuits.
Current & Fault Duty
Compare MCCB and MCB →
Icu vs Ics
The saved data for CQM6 lists C/S/M/H classes up to 75kA, according to frame and ordered configuration. Match the declared duty to the prospective short-circuit current and continuity objective.
Short-Circuit Study
Review Technical Support →
Pole and Neutral Arrangement
Published pole options are 2P / 3P / 4P. Confirm which conductors must be switched, protected and isolated together.
System Arrangement
View MCCB Range →
Guia de Encomenda
- State the exact model: CQM6.
- Provide frame and rated current within the published range: 10–1250A.
- Confirm poles: 2P / 3P / 4P.
- Specify the trip unit or protection function: thermal-magnetic trip.
- Provide system voltage, frequency, application, expected fault level, destination market and quantity.
- List required accessories, terminals, documents and any approved OEM/ODM marking or packaging requirements.
Verificações de Instalação e Coordenação
- Use the exact model drawing and instructions; do not infer terminal positions, supply direction or accessory compatibility from another MCCB.
- Verify conductor material and cross-section against the circuit calculation, terminal data, temperature and grouping.
- Confirm Icu/Ics or DC fault duty, upstream/downstream coordination, enclosure conditions, altitude and clearances.
- Installation, isolation, testing and maintenance must be performed by qualified personnel under applicable rules.
Accessory List
1.Our company can provide three new products for customers to choose from,namely the right-sideauxilary switch,the left-side shunt trip device,and the left-side undervoltage release device.
2.For the spedfcations of 220,320,240,340,270 and 370,the auxilaryswitcch can provide two pairs ofswitches.Please specily this vhen placing an order.
3.For the 250 and 350 specifications,the shunt trip device and undervoltage release for models 400 andabove can only be installed on 3-pole circuit breakers.
Guia de Seleção
| Product code ① | Shell frame grade ② | Breaking capacity ③ | Operating method ④ | The number of poles ⑤ | ||||
| CQM6 | 125 | C | P | 4 | ||||
| Molded case circuit breaker | C | S | M | H | P: Motorized operation Z: Timing handle W: Direct operation |
2-pole 3-pole 4-pole |
||
| 125 | 125 | 15/18 | 25/18 | / | / | |||
| 160 | 160 | 25/18 | 35/25 | 50/35 | / | |||
| 250 | 250 | 25/18 | 35/25 | 50/35 | / | |||
| 630 | 630 | / | 35/25 | 50/35 | 70/50 | |||
| 800 | 800 | / | 35/25 | 50/35 | 70/50 | |||
| 1250 | 1250 | / | 35/25 | 50/35 | 70/50 | |||
| Decoupler method and internal accessories ⑥ | Rated current A ⑦ | Function ⑧ | Optional code for four-pole products ⑨ | Special code ⑩ | |
| 300 | 125A | 2 | A | I | |
| The first digit indicates the type of detent 2: Instantaneous detent only 3: Duplicate detent Note: The last two digits are the accessory designator (see accessory table). |
125 | 10,16,20,32,40,50,63,80,100,125 | 1:For power distribution 2:For motor protection |
A:N-pole is unprotected and cannot be combined B:N-pole is unprotected and can be combined C:N-pole is protected and can be combined D:N-pole is protected and cannot be combined |
I: Overload alarm non-trip function |
| 160 | 10,16,20,32,40,50,63,80,100,125,140,160 | ||||
| 250 | 100,125,140,160,180,200,225,250 | ||||
| 630 | 250,315,350,400,500,630 | ||||
| 800 | 500,630,700,800 | ||||
| 1250 | 800,1000,1250 | ||||
| Accessory Voltage ⑪ | Motorized operating voltage ⑫ | Installation ⑬ | Whether to install a terminal block ⑭ | |||
| Q1 | D1 | Q | 2 | |||
| Undervoltage detent Q1:AC220V Q2:AC240V Q3:AC380V Q4:AC415V |
Shunt release F1:AC220V F2:AC380V F3:DC110V F4:DC24V |
Auxiliary alarm J1:AC125V J2:AC250V J3:DC125V J4:DC24V |
DC1 Electrical Operation D1:AC220V D2:AC230V D3:AC380V D4:AC400V |
DC3 Electrical Operation D5:AC230V D6:AC110V D7:DC220 D8:DC110 D9:AC110~240V D10:DC100~220V |
Q:Front of plate H:Rear of plate C:Inserted |
1:No installation 2:Installation |
| Note:When motorized operation is selected,please refer to the external accessories for the two voltages applicable for motorized operation. | ||||||
Main Technical Parameters
| Número do modelo | CQM6-125 | CQM6-160 | ||||||
| Rated current of frame level Inm(A) | 125 | 160 | ||||||
| Número de polos | 2, 3, 4 | 3, 4 | ||||||
| Rated current In(A),at 40℃,50℃,55℃ | 10,16,20,25,32,40,50,63,80,100,125 | 10,16,20,25,32,40,50,63,80,100,125,140,160 | ||||||
| Rated operating voltage Ue(V),AC 50/60Hz | 400/415 | 400/415 | ||||||
| Rated insulation voltage Ui (V) | 800 | 800 | ||||||
| Rated impulse withstand voltage Uimp(KV) | 8 | 8 | ||||||
| Breaking capacity designation | C | S | C | S | M | |||
| Short-circuit breaking capacity Icu/Ics(kA) | AC400/415V | 46249 | 25/18 | 25/18 | 35/25 | 50/35 | ||
| Selectivity category | A | A | A | A | A | |||
| Number of operating cycles(cycle) | ON | 6000 | 6000 | |||||
| OFF | 10000 | 10000 | ||||||
| Trip mechanisms and protection types | Magnetic trip | Power distribution protection | ● | ● | ● | ● | ● | ● |
| Motor protection | ● | ● | ● | ● | ● | ● | ||
| Thermal-magnetic trip | Power distribution protection | ● | ● | ● | ● | ● | ● | |
| Motor protection | ● | ● | ● | ● | ● | ● | ||
| Accessory | Auxiliary contacts | ● | ● | ● | ● | ● | ● | |
| Alarm contacts | ● | ● | ● | ● | ● | ● | ||
| Shunt disconnect | ● | ● | ● | ● | ● | ● | ||
| Undervoltage detent | ● | ● | ● | ● | ● | ● | ||
| Manual operating mechanism | ● | ● | ● | ● | ● | ● | ||
| Motorized operating mechanism | ● | ● | ● | ● | ● | ● | ||
| Backplane wiring | ● | ● | ● | ● | ● | ● | ||
| Inserted | ● | ● | ● | ● | ● | ● | ||
| Coupling plate | ● | ● | ● | ● | ● | ● | ||
| Partition between phases | ● | ● | ● | ● | ● | ● | ||
| Derivative products | Dedicated for prepayment electric meters | ● | ● | ● | ● | ● | ● | |
| Overload alarm without trip | – | – | – | ● | ● | ● | ||
| Overall dimensions (mm) (a-b-c-ca) |
 |
3 P | 75-130-68-92 | 90-155-70-94 | 90-155-84-109 | |||
| 4 P | 100-130-68-92 | 120-155-70-94 | 120-155-84-109 | |||||
Note:● for optional accessories;”-” for no optional accessories.
Main Technical Parameters
| Número do modelo | CQM6-250 | CQM6-630 | ||||||
| Rated current of frame level Inm(A) | 250 | 630 | ||||||
| Número de polos | 2, 3, 4 | 3, 4 | ||||||
| Rated current In(A),at 40℃,50℃,55℃ | 125,140,160,180,200,225,250 | 250,315,350,400,500,630 | ||||||
| Rated operating voltage Ue(V),AC 50/60Hz | 400/415 | 400/415 | ||||||
| Rated insulation voltage Ui (V) | 800 | 800 | ||||||
| Rated impulse withstand voltage Uimp(KV) | 8 | 8 | ||||||
| Breaking capacity designation | C | S | M | S | M | H | ||
| Short-circuit breaking capacity Icu/Ics(kA) | AC400/415V | 25/18 | 35/25 | 50/35 | 35/25 | 50/35 | 70/50 | |
| Selectivity category | A | A | A | A | A | A | ||
| Number of operating cycles(cycle) | ON | 6000 | 3000 | |||||
| OFF | 10000 | 8000 | ||||||
| Trip mechanisms and protection types |
Magnetic trip | Power distribution protection | ● | ● | ● | ● | ● | ● |
| Motor protection | ● | ● | ● | ● | ● | ● | ||
| Thermal-magnetic trip | Power distribution protection | ● | ● | ● | ● | ● | ● | |
| Motor protection | ● | ● | ● | ● | ● | ● | ||
| Accessory | Auxiliary contacts | ● | ● | ● | ● | ● | ● | |
| Alarm contacts | ● | ● | ● | ● | ● | ● | ||
| Shunt disconnect | ● | ● | ● | ● | ● | ● | ||
| Undervoltage detent | ● | ● | ● | ● | ● | ● | ||
| Manual operating mechanism | ● | ● | ● | ● | ● | ● | ||
| Motorized operating mechanism | ● | ● | ● | ● | ● | ● | ||
| Backplane wiring | ● | ● | ● | ● | ● | ● | ||
| Inserted | ● | ● | ● | ● | ● | ● | ||
| Coupling plate | ● | ● | ● | ● | ● | ● | ||
| Partition between phases | ● | ● | ● | ● | ● | ● | ||
| Derivative products | Dedicated for prepayment electric meters | ● | ● | ● | ● | ● | ● | |
| Overload alarm without trip | ● | ● | ● | ● | ● | ● | ||
| Overall dimensions (mm) (a-b-c-ca) |
 |
3 P | 105-165-70-96 | 105-165-93-120 | 140-257-105-155 | |||
| 4 P | 140-165-70-96 | 140-165-93-120 | 185-257-105-155 | |||||
Note:● for optional accessories;”-” for no optional accessories.
Main Technical Parameters
| Número do modelo | CQM6-800 | CQM6-1250 | ||||||
| Rated current of frame level Inm(A) | 800 | 1250 | ||||||
| Número de polos | 3, 4 | 3, 4 | ||||||
| Rated current In(A),at 40℃,50℃,55℃ | 500, 630, 700, 800 | 1000, 1250 | ||||||
| Rated operating voltage Ue(V),AC 50/60Hz | 400/415 | 400/415 | ||||||
| Rated insulation voltage Ui (V) | 800 | 800 | ||||||
| Rated impulse withstand voltage Uimp(KV) | 8 | 8 | ||||||
| Breaking capacity designation | S | M | H | S | M | H | ||
| Short-circuit breaking capacity Icu/Ics(kA) | AC400/415V | 35/25 | 50/35 | 70/50 | 35/25 | 50/35 | 70/50 | |
| Selectivity category | A | A | A | A | A | A | ||
| Number of operating cycles(cycle) | ON | 3000 | 1000 | |||||
| OFF | 8000 | 3000 | ||||||
| Trip mechanisms and protection types | Magnetic trip | Power distribution protection | ● | ● | ● | ● | ● | ● |
| Motor protection | ● | ● | ● | ● | ● | ● | ||
| Thermal-magnetic trip | Power distribution protection | ● | ● | ● | ● | ● | ● | |
| Motor protection | ● | ● | ● | ● | ● | ● | ||
| Accessory | Auxiliary contacts | ● | ● | ● | ● | ● | ● | |
| Alarm contacts | ● | ● | ● | ● | ● | ● | ||
| Shunt disconnect | ● | ● | ● | ● | ● | ● | ||
| Undervoltage detent | ● | ● | ● | ● | ● | ● | ||
| Manual operating mechanism | ● | ● | ● | ● | ● | ● | ||
| Motorized operating mechanism | ● | ● | ● | ● | ● | ● | ||
| Backplane wiring | ● | ● | ● | ● | ● | ● | ||
| Inserted | ● | ● | ● | ● | ● | ● | ||
| Coupling plate | ● | ● | ● | ● | ● | ● | ||
| Partition between phases | ● | ● | ● | ● | ● | ● | ||
| Derivative products | Dedicated for prepayment electric meters | ● | ● | ● | ● | ● | ● | |
| Overload alarm without trip | ● | ● | ● | ● | ● | ● | ||
| Overall dimensions (mm) (a-b-c-ca) |
 |
3 P | 210-275-105-155 | 210-275-105-155 | ||||
| 4 P | 280-275-105-155 | 280-275-105-155 | ||||||
Note:● for optional accessories;”-” for no optional accessories.
Operating Characteristics
1.The inverse time operating characteristics of power distribution circuit when all poles areenergized simultaneously at anambient air temperature of +40℃(with no humidity compensation)are shown in the following table:
| Test current designation | Setting current multiple | Conventional time | Initial state |
| In≤63 63<In | |||
| Conventional non-tripping current | 1.05 | ≥1h ≥2h | Cool state |
| Conventional tripping current | 1.3 | <1h <2h | Hot state |
2.The inverse time action characteristics of circuit breakers for motor ption without humiditycompensation when all poles areenergized simultaneously at an ambient air temperature of+40C are showrin the following table.
| Test current designation | Setting current multiple | Conventional time | Initial state |
| In≤800 | |||
| Conventional non-tripping current | 1 | ≥2h | Cool state |
| Conventional tripping current | 1.2 | <2h | Hot state |
3.Action characteristics under short-circuit condition:The short-circuuit curent setting value ofthe instantaneous tripper of the circuitbreaker forpower distribution is 10ln.
The short-circuit current setting value of the instantaneous tripper of the circuit breaker for motorprotection is 12ln.
The accuracy of the short-circuit curent setting value of the instantaaneous tripper is 20% of the short-circuit currentsetting value.
CQM6-125 Operating Characteristic Curve
CQM6-160 Operating Characteristic Curve
CQM6-250 Operating Characteristic Curve
CQM6-630 Operating Characteristic Curve
CQM6-800 Operating Characteristic Curve
CQM6-1250 Operating Characteristic Curve
Outline and Installation Dimensions(mm)
Outline and Installation Dimensions(mm)
| Molded case circuit breaker | Overall dimension | Installation dimensions | Bolt | |||||||||||||||||||||
| A | A1 | A2 | A3 | B | B1 | B2 | B3 | B5 | B6 | H | H1 | H2 | H3 | H4 | H5 | H6 | A4 | B4 | ||||||
| 3P | 4P | 3P | 4P | 3P | 4P | 3P | 4P | |||||||||||||||||
| CQM6-125CS | 75 | 100 | 50 | 75 | – | – | – | – | 130 | 114 | 85 | 50 | 50 | – | 92 | 72 | 4 | 68 | 61 | 41 | 24 | 25 | 111 | M8/M6 |
| CQM6-160CS | 90 | 120 | 60 | 90 | – | – | – | – | 155 | 134 | 103 | 50 | 50 | – | 94 | 72 | 4 | 70 | 61 | 41 | 24 | 30 | 132 | M8 |
| CQM6-160M | 90 | 120 | 60 | 90 | – | – | – | – | 155 | 134 | 103 | 50 | 50 | – | 109 | 83 | 4 | 83 | 76 | 24.5 | 24.5 | 30 | 132 | M8 |
| CQM6-250CS | 105 | 140 | 70 | 105 | – | – | – | – | 165 | 144 | 103 | 50 | 100 | – | 96 | 72 | 4 | 70 | 61 | 46 | 24 | 35 | 126 | M8 |
| CQM6-250M | 105 | 140 | 70 | 105 | – | – | – | – | 165 | 144 | 102 | 50 | 110 | – | 120 | 95 | 4 | 91 | 84 | 22.5 | 24 | 35 | 126 | M8 |
| CQM6-630SMH | 140 | 185 | 88 | 132 | 140 | 196 | 112 | 168 | 257 | 230 | 179 | 90 | 110 | 42 | 155 | 107 | 5 | 105 | 97 | 64 | 35 | 44 | 194 | M10 |
| CQM6-800SMH | 210 | 280 | 140 | 210 | 180 | 250 | 140 | 210 | 275 | 243 | 192 | 90 | 110 | 87 | 155 | 107 | 5 | 104 | 97 | 65 | 24 | 70 | 242.5 | M12 |
| CQM6-1250SMH | 210 | 280 | 140 | 210 | 180 | 250 | 140 | 210 | 275 | 243 | 192 | 90 | 110 | 87 | 155 | 107 | 5 | 104 | 97 | 65 | 24 | 70 | 242.5 | M10*2 |
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 CQM6 projects, CHAC can review private-label marking, packaging, approved appearance options, published 10–1250A electrical configurations and technical-document requirements. Requests outside the published range are subject to engineering evaluation, testing, minimum order quantity and project feasibility.
Recinto
Design
Tamanhos de caixas personalizadas, estruturas e detalhes de instalação.
Interno
Configuração
Layout interno flexível e opções de arranjo de componentes.
Branding &
Logótipo
Logótipos de marca própria, placas de identificação e identificação da marca.
Embalagem
Design
Caixas personalizadas, etiquetas, manuais e soluções de embalagem.
Elétrico
Configuração
Instalação elétrica à medida com base nos requisitos da aplicação.
Certificação
Apoio
Apoio a normas e requisitos de conformidade do mercado-alvo.
Transferir
Disjuntor de Caixa Moldada Série CQM6
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.
CQM6 Product FAQ
What is the CQM6 MCCB used for?
The CQM6 is specified for overload and short-circuit protection in AC 400/415V systems within the published 10–1250A range. Suitability depends on the fault study, conductor coordination, enclosure and local rules.
How does the CQM6 molded case circuit breaker work?
The protection mechanism responds to the fault conditions stated for this model: overload and short-circuit protection. Trip behaviour, settings and interruption duty must be checked against the ordered frame and product instructions.
How do I choose the CQM6 rated current and poles?
Start with the design current and conductor calculation, then choose a published current within 10–1250A and poles from 2P / 3P / 4P. Neutral treatment, fault level, ambient conditions and coordination also need review.
What breaking capacity should I check on the CQM6?
Use the declared C/S/M/H classes up to 75kA, according to frame and ordered configuration for the exact frame, voltage and configuration. The prospective short-circuit current at the installation point must be within the applicable duty; a larger ampere value alone is not a selection rule.
Can the CQM6 replace an MCB or an earth-leakage device?
An MCCB is not automatically a like-for-like replacement. The CQM6 provides overload and short-circuit protection; residual-current protection, DC interruption, adjustable settings and other functions must be confirmed separately from the project requirement.
How should the CQM6 be installed and tested?
Use only the exact model drawing, terminal identification and accessory instructions. A qualified person should verify isolation, conductor size, torque, clearances, settings, fault duty and functional tests before energising the circuit.
Confirm the Right CQM6 Configuration
Send the frame, rated current, poles, protection function, system voltage, expected fault level, destination market and quantity. CHAC will review the request against the published model range.
