CQM6L Leakage-Integrated MCCB OEM/ODM Manufacturer

Applications and Selection Guide

Use the verified CQM6L 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.

Ordering Guide

1. State the exact model: CQM6L.
2. Provide frame and rated current within the published range: 10–1250A frame range; verify ordered In.
3. Confirm poles: 3P / 4P.
4. Specify the trip unit or protection function: thermal-magnetic trip.
5. Provide system voltage, frequency, application, expected fault level, destination market and quantity.
6. List required accessories, terminals, documents and any approved OEM/ODM marking or packaging requirements.

Installation and Coordination Checks

• 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

Selection Guide

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
		OFF	8000			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)		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:

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:

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)