CQM6RT Thermomagnetische einstellbare MCCB – Herstellungshersteller für OEM-Anwendungen

Applications and Selection Guide

Use the verified CQM6RT 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: CQM6RT.
2. Provide frame and rated current within the published range: 32–1250A.
3. Confirm poles: 3P / 4P.
4. Specify the trip unit or protection function: adjustable thermal Ir and magnetic Im.
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.

Selection Guide

Accessory List

CHAC offers a right-side auxiliary switch, a left-side shunt release and a left-side undervoltage release.

For accessory codes 220, 320, 240, 340, 270 and 370, specify the required auxiliary contact arrangement when ordering.

Main Technical Parameters

Model number			CQM6RT-160			CQM6RT-250
Rated current of frame level Inm(A)			160			250
Number of poles			3,4			3,4
Rated current In(A),at 40°C,50°C,55°C			32,40,50,63,80,100,125,140,160			100,125,140,160,180,200,225,250
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	M	C	S	M
Short-circuit breaking capacity Icu/Ics(kA)		AC400/415V	25/18	35/25	50/35	25/18	35/25	50/35
Selectivity category			A	A	A	A	A	A
Number of operating cycles ON (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	90×155×71×95		90×155 ×85×109	105×165×71×96		105×165 ×93×119
		4 P	120×155×71×95		120×155 ×85×109	140×165×71×96		140×165 ×93×119

Note: ● indicates an available optional accessory; – indicates that the accessory is not available.

Model number			CQM6RT-400			CQM6RT-630
Rated current of frame level Inm(A)			400			630
Number of poles			3,4			3,4
Rated current In(A),at 40°C,50°C,55°C			250,315,350,400			250,315,350,400,630
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			S	M	H	S	M	H
Short-circuit breaking capacity Icu/Ics(kA)		AC400/415V	35/25	50/35	75/50	35/25	50/35	75/50
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)		3 P	140×257×108×156			140×257×108×156
		4 P	185×257×108×156			185×257×108×156

Note: ● indicates an available optional accessory; – indicates that the accessory is not available.

Model number			CQM6RT-800			CQM6RT-1250
Rated current of frame level Inm(A)			800			1250
Number of poles			3,4			3,4
Rated current In(A),at 40°C,50°C,55°C			500,630,700,800			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	75/50	35/25	50/35	75/50
Selectivity category			A	A	A	A	A	A
Number of operating cycles (cycle)		ON	1000			1000
		OFF	3000			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	210×275×114×163			210×275×114×163
		4 P	280×275×114×163			280×275×114×163

Note: ● indicates an available optional accessory; – indicates that the accessory is not available.

Operating Characteristics

The following table gives the inverse-time operating characteristics for distribution protection with all poles energised at an ambient temperature of +40°C, without humidity compensation.

The following table gives the inverse-time operating characteristics for motor protection with all poles energised at an ambient temperature of +40°C, without humidity compensation.

The operating-characteristics reference gives an instantaneous trip current setting of 10In for distribution protection. Confirm the applicable trip-unit setting for the ordered configuration.

The operating-characteristics reference gives an instantaneous trip current setting of 12In for motor protection.

The stated accuracy of the instantaneous trip current setting is 20% of the setting value.

CQM6RT-160 Operating Characteristic Curve

CQM6RT-250 Operating Characteristic Curve

CQM6RT-400 / 630 Operating Characteristic Curve

CQM6RT-800 Operating Characteristic Curve

CQM6RT-1250 Operating Characteristic Curve

Outline and Installation Dimensions(mm)