CQM6L Leakage-Integrated MCCB OEM/ODM Manufacturer

CQM6L Leakage-Integrated MCCB OEM/ODM Manufacturer

The CQM6L Leakage-Integrated Molded Case Circuit Breaker adds residual current protection to overload and short-circuit safeguarding for currents 10A to 1250A. Adjustable leakage sensitivity (30-1000mA with time delay) detects ground faults quickly. 3/4 poles, capacities up to 75kA, compliant with IEC/EN 60947 and GB/T 14048 standards. Accessories for comprehensive monitoring, flexible operations, 800V insulation. Designed for high-risk or humid environments like bathrooms or outdoors, it features tested life for enhanced safety and reliability.

Categories: MCCB, Electrical Distribution Equipment

Product Features

■ Integrated Safety: Combines the overcurrent protection of a standard MCCB with earth leakage (RCCB) functionality in a single device for enhanced safety.

■ Seamless Compatibility: Shares the same compact dimensions and accessory platform as the standard CQM6 series, allowing for easy upgrades.

■ Selective Tripping: Offers configurable options for the N-pole (protected/unprotected, combinable) to meet specific system grounding requirements.

■ High Reliability: Maintains the proven environmental resilience and mechanical durability of the CQM6 product line.

Compliance

■ 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

Accessory List

Selection Guide

Product code ①	Shell frame grade ②	Breaking capacity ③					Operating method ④	The number of poles ⑤
CQM6L	160	C					P	4
Molded case circuit breaker			C	S	M	H	P:Motorized operation Z:Turning handle W.Direct operation	3-pole 4-pole
	160	160	25/18	35/25	/	/
	250	250	25/18	35/25	/	/
	630	630	/	35/25	50/35	75/75
	800	800	/	35/25	50/35	75/75
	1250	1250	/	35/25	50/35	75/75

Decoupler method and internal accessories ⑥	Rated current A ⑦		Function ⑧	Optional code for four-pole products ⑨	Special code ⑩
300	160A		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).	160	10,16,20,32,40,50,63,80,100,125,140,160	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
	250	100,125,140,160,180,200,225,250
	630	250,315,350,400,500,630
	800	500,630,700,800

Product code ⑪			Breaking capacity ⑫
L1			Y1
Fixed delay type		Quick three-step adjustable	Fixed delay type				Quick three-step adjustable
L1:30	L6:200	L11:30,50,100	Y1:0.1S	Y4:0.4S	Y7:0.7S	Y10:1.0S	Y13:0.45,1,2
L2:50	L7:300	L12:30,100,200
L3:75	L8:500	L13:30,100,500	Y2:0.2S	Y5:0.5S	Y8:0.8S	Y11:1.1S	Y14:1,2,3
L4:100	L9:500	L14:100,300,500
L5:150	L10:1000	L15:100,300,500	Y3:0.3S	Y6:0.6S	Y9:0.9S	Y12:1.2S
		L16:100,300,1000

Accessory Voltage ⑬			Motorized operating voltage ⑭		Installation ⑮	Whether to install a terminal block ⑯
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

Model number			CQM6L-160		CQM6L-250
Rated current of frame level Inm(A)			160		250
Number of poles			4		4
Rated current In(A),at 40℃,50℃,55℃			10, 16, 20, 32, 40, 50, 63, 80,100, 125, 160		125,140,160,180,200,225,250
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			C	S	C	S
Short-circuit breaking capacity Icu/Ics(kA)		AC400/415V	25/18	35/25	25/18	35/25
Selectivity category			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)		4 P	120-155-70-94		140-165-70-96

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

Model number			CQM6L-630			CQM6L-800
Rated current of frame level Inm(A)			630			800
Number of poles			3, 4			4
Rated current In(A),at 40℃,50℃,55℃			250, 315, 350, 400, 500, 630			500,630,700,800
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	75/75	35/25	50/35	75/75
Selectivity category			A	A	A	A	A	A
Number of operating cycles(cycle)		ON	3000			3000
Number of operating cycles(cycle)		OFF	8000			8000
Trip mechanisms and protection types	Magnetic trip	Power distribution protection	●	●	●	●	●	●
	Magnetic trip	Motor protection	●	●	●	●	●	●
	Thermal-magnetic trip	Power distribution protection	●	●	●	●	●	●
	Thermal-magnetic trip	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		●	●	●	●	●	●
Derivative products	Overload alarm without trip		●	●	●	●	●	●
Overall dimensions (mm) (a-b-c-ca)		4 P	185-257-105-155			280-275-105-155

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

Operating Characteristics

1.The inverse time operating characteristics of power distribution circuit breakers when all poles are energized simultaneously at anambient airtemperature of +40℃(with no humidity compensation)are shown in the following table:

Test current designation	Setting current multiple	Conventional time	Initial state
		In≤63 In>63
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 protection without humidity compensation when all poles areenergizedsimultaneously at an ambient air temperature of +40℃ are shown in the following table:

Test current designation	Setting current multiple	Conventional time	Initial state
		In≤800
Conventional non-tripping current	1.0	≥2h	Cool state
Conventional tripping current	1.2	<2h	Hot state

3.Action characteristics under short-circuit condition:The short-circuit curent setting value of the instantaneous tripper of the circuit breaker forpower distribution is 10In

The short-circuit current setting value of the instaneous tripper of the circuit breaker for motorprotection is 12ln

The accuracy of the short-circuit curent setting value of the instantaneous tripper is 20% of the short-circuit currentsetting value.

CQM6L-125 Operating Characteristic Curve

CQM6L-250 Operating Characteristic Curve

CQM6L-630 Operating Characteristic Curve

CQM6L-800 Operating Characteristic Curve

CQM6L-1250 Operating Characteristic Curve

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
CQM6L-160	–	120	–	90	–	–	–	–	155	134	103	50	50	–	94	72	4	70	61	41	24	30	132	M8
CQM6L-250	–	140	–	105	–	–	–	–	165	144	103	50	100	–	96	72	4	70	61	46	24	35	126	M8
CQM6L-630	–	185	–	132	–	196	–	168	257	230	179	90	110	42	155	107	5	105	97	64	35	44	194	M10
CQM6L-800	–	280	–	210	–	250	–	210	275	243	192	90	110	87	155	107	5	104	97	65	24	70	242.5	M12

Why Choose CHAC

With 30+ years of manufacturing experience, 1100+ employees, 100M+ poles
annual capacity and 90% automated production, CHAC provides stable production capacity and strict
quality control for global OEM/ODM customers. Our in-house manufacturing system supports long-term
cooperation for electrical brands, importers and distributors.

30+

YEARS EXPERIENCE

Specialized in low-voltage electrical manufacturing

1100+

EMPLOYEES

Professional team ensures stable quality and delivery

100M+

POLES ANNUAL CAPACITY

Large-scale production capacity to meet global demand

90%

AUTOMATED PRODUCTION

Advanced automation for high efficiency and consistency

Automated Assembly Line

Testing Laboratory

Injection & Stamping

Quality Inspection

Strict quality control system ensures every product meets global standards.

What Can We Customize?

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

Enclosure
Design

Customized enclosure sizes, structures and installation details.

Internal
Configuration

Flexible internal layout and component arrangement options.

Branding &
Logo

Private label logos, nameplates and brand identification.

Packaging
Design

Custom cartons, labels, manuals and packaging solutions.

Electrical
Configuration

Tailored electrical setup based on application requirements.

Certification
Support

Support for target-market standards and compliance requirements.

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CQM6 Series Moulded Case Circuit Breaker

Complete product overview for low-voltage electrical components and product selection reference.

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Frequently Asked Questions

Q1. Do you support product customization based on our design requirements?

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: What is your production capacity and Minimum Order Quantity (MOQ)?

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: What assurances are there for product quality and certifications?

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.