CQM6E Electronic Adjustable MCCB OEM Manufacturer

The CQM6E Electronic Adjustable Molded Case Circuit Breaker provides advanced, tunable protection against overloads, short-circuits, and ground faults for currents from 10A to 1250A. The electronic trip unit allows precise adjustment of parameters like long-time delay, short-time delay, instantaneous, and ground fault settings. With 3 or 4 poles and breaking capacities up to 75kA, it complies with IEC/EN 60947 and GB/T 14048 standards. Accessory options include digital displays and communication modules for smart monitoring. Motorized or manual operations, 800V insulation, and tested life make it suitable for dynamic industrial and automation systems requiring flexibility and high selectivity.

Polacos
3P / 4P

Corriente nominal:
10A–1250A

Voltaje nominal
400/415V CA

Estándar
IEC/EN 60947-1 (Reglas generales)
IEC/EN 60947-2 (Interruptores automáticos)
IEC/EN 60947-3 (Aparamenta)
IEC/EN 60947-4 (Contactores y arrancadores de motores)
Personalización
Servicio OEM/ODM integral

Características del producto

■ Precise Electronic Trip: Features an adjustable electronic release for highly accurate Long-Time, Short-Time, and Instaneous (L-S-I) protection.

■ Advanced Ground Fault Protection: Includes a dedicated ground fault (G) protection setting for enhanced system safety.

■ Visual Status Indication: Equipped with an intuitive control panel featuring a current light bar and clear indicators for overload and pre-alarm status.

■ Communication Ready: Provides the foundation for smart functionality, supporting integration with motorized operators for remote control.

Cumplimiento

Meets international and regional standards including

IEC/EN 60947-1(General Rules)                 GB/T 14048.1

IEC/EN 60947-2(Circuit-Breakers)                GB/T 14048.2

IEC/EN 60947-3(Switchgear)                    GB/T 14048.3

IEC/EN 60947-4( Contactors & Motor-Starters)     GB/T 14048.4

Lista de accesorios

Characteristic curve

Guía de selección

Product code① Shell frame grade② Shell frame rating current optional designator③ Breaking capacity④
CQM6 E 160   S M H
Molded case circuit breaker E
Electronically Adjustable
160 160 / 50/35 50/50
250 250 / 50/35 50/50
630 630 35/25 50/35 75/75
800 800 35/25 50/35 75/75
1250 1250 35/25 50/35 75/75
Operating method ⑤ Number of poles ⑤ Método de desacoplador y accesorios internos ⑥ Corriente nominal A ⑦
P 4 300 160A
P: Motorized operation
Z: Turn the handle
W: Direct operation
tripolar
tetrapolar
2: Intelligent disconnectors
Note: The last two digits are the accessory code (see attachment)
160, 250, 630, 800, 1250
Función ⑧ Four-pole products can be selected code ⑨ Código especial ⑩
2 A I
1: For power distribution
2: For motor protection
A: N-pole without protection, can not be combined
B: N-pole with protection, can be combined
C: N-pole with protection, can be combined
D: N-pole with protection, can not be combined
Note: If the customer does not have a clear request, four-pole products will be defaulted to the B category
I: Overload alarm non-trip function

Main Technical Parameters

Número de modelo CQM6E-160 CQM6E-250
Rated current of frame level Inm(A) 160 250
Número de polos 3, 4 3, 4
Rated current In(A),at 40℃,50℃,55℃ 32, 63, 125, 160 160, 250
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 M H M H
Short-circuit breaking capacity Icu/Ics(kA) AC400/415V 50/35 50/50 50/35 50/50
Rated short-time withstand current Icw(kA),1s AC400/415V 2 2 5 5
Selectivity category B B B B
Number of operating cycles (cycle) ON 6000 6000
OFF 10000 10000
Electronic decouping (adjustable) 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
Overall dimensions (mm) (a-b-c-ca) 3P 90-155-84-109 105-165-93-120
4P 120-155-84-109 140-165-93-120

Note:● for optional accessories;”-” for no optional accessories.

Número de modelo CQM6E-630 CQM6E-800 CQM6E-1250
Rated current of frame level Inm(A) 630 800 1250
Número de polos 3, 4 3, 4 3, 4
Rated current In(A), at 40℃, 50℃, 55℃ 400, 630 630, 800 1000, 1250
Rated operating voltage Ue(V), AC 50/60Hz 400/415 400/415 400/415
Rated insulation voltage Ui (V) 800 800 800
Rated impulse withstand voltage Uimp(KV) 8 8 8
Breaking capacity designation S M H S M H S M H
Short-circuit breaking capacity Icu/Ics(kA) AC400/415V 35/25 50/35 75/75 35/25 50/35 75/75 35/25 50/35 75/75
Rated short-time withstand current Icw(kA), 1s AC400/415V 8 8 8 10 10 10 19.2 19.2 19.2
Selectivity category B B B B B B B B B
Number of operating cycles(cycle) ON 3000 3000 1000
OFF 8000 8000 3000
Electronic decouping
(adjustable)
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
Overall dimensions 3 P 140-257-105-155 210-275-105-155 210-275-105-155
(mm) (a-b-c-ca) 4 P 185-257-105-155 280-275-105-155 280-275-105-155

Note:● for optional accessories;”-” for no optional accessories.

Intlligent Release Adjustment Panel

1.Ir: Rated Current (Ir) Setting Dial

The setting dial for the rated current, applicable to 160-1250 frame sizes. The selectable settings on the front panel are:0.4, 0.45, 0.5, 0.55,0.6, 0.7,0.8,0.9,1.0, OFF.

2.Tr. Long-Time Delay (Tr) Setting Dial

The setting dial for the overload long-time delay. When the current passing through the circuit breaker reaches 1.5 times lr (×in), the breaker trips within the set time.

The selectable settings are: 8s, 12s, 16s, 24s, 32s, 48s, 64s, 96s, 128s,256s.

3.Isd: Short-Time Delay Current (Isd) Setting Dial

The setting dial for the short-time delay current multiplier. Selectable setting are: 2,3, 4, 5, 6,7,8, 9, 10, OFF. When a short-circuit current equal to the set value(×Ir, ×In) passes through the breaker, it will trip after a time delay.

4.Tsd: Short-Time Delay Operating Time (Tsd) Setting Dial

The setting dial for the short-time delay operating time. It is divided into inverse-time protection (2t ON) and definite-time protection (2t OFF). Selectable settings are: 0.05s, 0.1s, 0.15s, 0.2s, 0.3s. When a short-circuit current equal tosses through the breaker, it will trip within the set time.

5.li: Instantaneous Current (Ii)Setting Dial

The setting dial for the instantaneous current multiplier. Selectable settare:2,3,4,5,6,8,9,10,12. When a short-circuit current equal to the set value (×in) passes through the breaker, it will trip instantaneously.

6.Ip: Pre-alarm Current(Ip) Setting Dial

The setting dial for the pre-alarm current multiplier. Selectable settings are:60%,65%,70%, 75%, 80%, 85%, 90%, 95%, 100%, OFF. When the current passing through the breaker reaches the set value (×ir, ×in), the pre-alarm indicator light will illuminate.

7.Ig: Ground Fault Current (Ig) Setting Dial

The setting dial for the ground fault current multiplier. Selectable setting are:0.2,0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1.0,OFF. When the ground fault current passing through the breaker reaches the set value (×In),the breaker will trip due to the ground fault.

Characteristics of Intelligent Release: It has protection functions such as overload long-delay inverse time, short-circuit short-delay inverse time,short-circuit short-delay fixed time,and short-circuit instantaneous action. These functions can be set by the user to form the required protection characteristics. The inverse time action characteristics of long-delay overcurrent protection are shown in the table:

Current time of action
power
distribution
1.05lr >2h inoperative(In>63A),1h inoperative (In≤63A)
1.3r <1h action
1.5lr Settling time tr(s) Inm-125A、250A、400A、630A、800A、1250A
8、12、16、24、32、48、64、96、128、256

Remarks:Tolerance of operation value is ±10%,tolerance of operation time is ±15%.

Short delay overcurrent protection action characteristics

 

When Tsd is within the 12tON stall range,it is a fixed time limit:

Current time of action
I≤Isd≤6Ir counter-time limit I²T2=(6Xlr)² Tsd
I>Isd and I>6Ir
Inverse time limit to fixed time limit
Consolidation time 0.05 0.1 0.15 0.2 0.3
Inaccuracies ±0.02 ±0.03 ±0.04 ±0.06 ±0.08
Returnable time 0.14 0.21 0.3

Remarks :1 is the actual passing current, T2 is the actual action time,lsd is the set short delay curent, Tsd is the set short delay action time

 

When Tsd is in the range of I2tOFF gear,it is fixed time limit:

Current time of action
l≥lsd Current Error±10% Consolidation time 0.05 0.1 0.15 0.2 0.3
Inaccuracies ±0.02 ±0.03 ±0.04 ±0.06 ±0.08
Returnable time 0.14 0.21 0.3

Remarks:lis the actual passing current,T2 is the actual action time;lsdis the short delay curent, Tsd is the short delay actiontime.

Short-circuit transient protection action characteristics

Current li=(2,3,4,5,6,8,9,10,12)×ln
Motion Characteristics Operating current Minimum operating current 0.9li
Maximum inoperative current 1.1li
time of action <0.1s

 

Grounding protection operating characteristics

Current Ig=(0.2,0.3,0.4,0.5,0.6,0.7,0.8,0.9,1.0)×ln
Motion Characteristics Ig≤0.9lg Circuit breaker inoperative Ig>1.1lg
time of action Tg=0.4(fixed time limit)

The electronic striker panel indicators are set as follows

Overload pre-warning characteritics:

Load Current I<1lp I > 1lp
Indicator status Indicator ligh is not flashing,does not light up Indicator light constant
Load Current I<1.15lp I ≥ 1.15lp
Indicator status Indicator light is not on Indicator ligh is on
Load Current ≥0.4In(Single phase) l≥0.2ln(Tri-phase)
Indicator status Indicator light is on Indicator light is on

Nota:

1.The above current error±10%.

2.The pre-alarm current needs to satisfy the startup current constraint,i.e.,the current cannot be lower than the operating condition.

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                              
CQM6E-160 90 120 60 90 155 134 102 50 50 109 83 4 83 76 24.5 24.5 30 132 M8
CQM6E-250 105 140 70 105 165 144 102 50 110 120 95 4 91 84 22.5 24 35 126 M8
CQM6E-630 140 185 88 132 140 196 112 196 257 230 179 90 110 42 155 107 5 105 97 30 32 44 194 M10
CQM6E-800 210 280 140 210 180 250 140 250 275 243 192 90 110 87 155 107 5 104 97 25 25 70 242.5 M12
CQM6E-1250 210 280 140 210 180 250 140 250 275 243 192 90 110 87 155 107 5 104 97 25 25 70 242.5 M10*2

Appearance and instllation dimensions at the rear of the panel

Appearance and installation dimensions of the rear part for the plug-in type(on the panel)

Molded case circuit breaker B-board rear wiring dimensions C Front-of-Board Wiring Dimensions C Plug-in wiring size
A1 B B1 H H1 φd φd1 φd2 φd3 A4 B4 A A1 A2 A3 A4 A5 A6 A7 H B B1 B2 B3 φd H2 H3
125 25 114 111 62 87 6 14 5 5 25 111 130 58 115 132 17.5 20 58 97 28 75 50 50 77 5.5 15 10.5
160 30 134 132 72 112 8 18 5 5 30 132 155 60 134 173 38 40 60 98 50 92 60 60 94 6.5 31 19.5
250 35 144 126 87 126 12 24 5 5 35 126 165 54 144 184 45 47 54 95 50 107 70 70 109 6.5 35 21.5
630 44 230 194 83 136 18 35 7 7 44 194 257 125 225 280 55 57 125 169 60 140 87 60 142 9 32 φ23
800 70 243 243 174 243 26 48 7 7 70 243 275 147 242 42 55 58 147 190 91 218 140 107 222 10.5 31 φ27

Appearance and installation dimensions of the rear part for the plug-in type(on the panel)

Model Number A E L2 L3 D E H H1 L A1 B1 D1 A2 B2 D2
160 112 30 200 216 4.5 6.5 56 28 182 172 30 5.5 67 60 6.5
250 150 35 233 245 4.5 8.5 74 33 202 191 35 5.5 74 70 6.5
630 283 70 363 405 6.5 12.5 125 67 341 327 70 6.5 143 140 7
800 283 70 363 405 6.5 12.5 125 67 341 327 70 6.5 143 140 7

The internal accessories of CQM6E series include under-voltage detent,shunt detent, auxiliary alarm detent,its main technical paraameters and wiring diagrams are as follows.

Under-voltage release device

Internal accessories  
Rated voltage of the power supply Main Performance
AC220,AC240
AC380,AC415
A. When the supply voltage drops to 70%and 35%of the rated voltage, the undervoltage detector shall operate.
B. When the electro-hydraulic voltage is lower than 35%of the rated voltage,the undervoltage detractor should not be able to absorb,in order to prevent the circuit breaker from closing.
C.When the power supply voltage is equal to or greater than 85% of the rated voltage,the undervoltage detractor will ensure the absorption, and ensure the reliable closing of the circuit breaker.

Shunt release device  
Rated supply voltage Main Performance
DC24,DC110
AC220,AC3B0
The shunt release can operate reliably between 70%and 110%of the rated voltage value.

Auxiliary alarm contact  
Rated voltage of power supply Main performance
Auxiliary switch
AC 125V 5A,AC 250V 3A DC
125V 0.4A,DC 125V 0.2A
Provides differentiated signals for circuit breakers in the”closed” and “open”positions.
Alarm switch
AC 125V 5A,AC 250V 3A DC
125V0.4A,DC   125V 0.2A
Provides signals to distinguish between “normal operation and “fault free release” positions of circuit breakers.
Auxiliary alarm switch
AC 125V 5A.AC 250V 3A DC
125V 0.4A,DC125V 0.2A
Provides signals to distinguish between “closed”,
“open” and “fault free release” positions of the circuit breaker.

Internal accessory

DC3 Electric Operation Mechanism

DC3 series electric operation mechanism is adopted advanced switching power supply technology,utilizing smallpermanent contact motordrive,small working current,suitable for 63-800A plastic case circuit breakers.

Model Number DC3-125 DC3-160 DC3-250 DC3-630 DC3-800
Compatible
Model
CQM6-125 CQM6-160
CQM6RT-160
CQM6RE-160
CQM6RE-250
CQM6-250
CQM6L-250
CQM6RT-250
CQM6Z-250
CQM6-630
CQM6L-630
CQM6RT-630
CQM6RE-630
CQM6Z-630
CQM6-800
CQM6L-800
CQM6RT-800
CQM6RE-800
CQM6L-1250
CQM6RE-1250
Overall
Dimensions
A 25 30 35 44 70
B 117 132 126 194 243
C 73 90 90 130 130
H 98 98(89.5) 102(92) 152 153
Rated
voltated V
AC-110-240,
DC100-220,DC24
AC 230,DC 220
AC 100,DC 110
Starting current A ≤0.5   ≤2
Mechanical life(times) 14000 10000 5000
Power(W) 14 35

1.Manual operation:Counterclockwse operationis prohibited.

2.When operating manually,insert the handle at the starting point and turn it 180° in a clockwise direction.

Manual operating mechanism

Shape of the circular handle and the door panel opening size (the distance from the center of the opening to the hinge should not be less than 200mm)

Outline and Installation Schematic Diagram of the Central Series Manual Opion Mechanism

Hand-operated mechanism model A B C D H
160 30 132 66 66 46
250 35 126 63 63 51
630 128 194 97 97 76
800 198 243 121.5 121.5 76
1250 198 243 121.5 121.5 76

¿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

Línea de ensamblaje automatizada

Laboratorio de pruebas

Laboratorio de pruebas

Inyección y Estampado

Inyección y Estampado

Inspección de calidad

Inspección de calidad

Certificación IEC
Certificación CE
Certificación CB
Certificación RoHS
Certificación ISO 14001

Un estricto sistema de control de calidad garantiza que cada producto cumpla con los estándares mundiales.

¿Qué podemos personalizar?

Flexible customization services are available for enclosure dimensions, component configuration,
branding and project requirements.

Diseño de cerramiento

Recinto
Diseño

Tamaños, estructuras y detalles de instalación de recintos personalizados.

Diseño de cerramiento

Configuración interna

Interno
Configuración

Opciones flexibles de diseño interno y disposición de componentes.

Configuración interna

Marca y Logotipo

Marca e
Logo

Logotipos de marca propia, placas de identificación e identificación de marca.

Marca y Logotipo

Diseño de empaque

Empaquetado
Diseño

Soluciones de embalaje, cajas personalizadas, etiquetas y manuales.

Diseño de empaque

Configuración eléctrica

Eléctrico
Configuración

Instalación eléctrica adaptada a los requisitos de la aplicación.

Configuración eléctrica

Soporte de Certificación

Certificación
Apoyo

Soporte para estándares del mercado objetivo y requisitos de cumplimiento.

Soporte de Certificación

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Interruptor automático de caja moldeada serie CQM6

Descripción general completa de componentes eléctricos de bajo voltaje y referencia para la selección de productos.

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¿Necesita documentos técnicos?

Contáctenos para obtener hojas de datos, certificados, planos, orientación de selección o soporte para proyectos OEM/ODM.

Contáctanos

Preguntas frecuentes

¿Admite la personalización de productos según nuestros requisitos de diseño?

Absolutamente. Nos especializamos en cooperación OEM y ODM en el campo de la electricidad de bajo voltaje y hemos brindado servicios personalizados a muchas empresas de renombre internacional. Ofrecemos soporte de proceso completo, que incluye diseño de I+D, ajustes de parámetros y selección de materiales especiales, asegurando que el producto cumpla completamente con sus requisitos.

P2: ¿Cuál es tu capacidad de producción y Cantidad Mínima de Pedido (MOQ)?

A2: Operamos una base de producción altamente automatizada con una producción anual de más de 100 millones de polos para interruptores automáticos en miniatura. Nuestra política de MOQ es flexible. Podemos ofrecer pedidos de prueba competitivos para lotes pequeños y planes de garantía de capacidad de producción dedicada.

P3: ¿Qué garantías hay sobre la calidad del producto y las certificaciones?

Nuestros productos principales cuentan con las certificaciones CCC, CE, CB y más, y se venden en más de 30 países y regiones en todo el mundo. La empresa ha establecido un Centro de Operaciones de Calidad dedicado que trabaja con los departamentos de negocios y producción para implementar un control de calidad de proceso completo, garantizando que los productos cumplan con los estándares internacionales.

P4: ¿Tiene la capacidad para la I+D de productos y para convertir conceptos en realidad?

A4: Contamos con un equipo completo de I+D y talleres digitales, respaldados por una amplia experiencia en personalización al servicio de numerosos clientes internacionales. Desde la propuesta conceptual y el desarrollo de muestras hasta la producción en masa, ofrecemos soporte técnico integral para ayudar a dar vida a tus ideas.