CQM6RT Thermal-Magnetic Adjustable MCCB OEM Manufacturer

Accessory List

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Selection Guide

Main Technical Parameters

Model number			CQM6T/A.RT-160			CQM6T/A.RT-250
Rated current of frame level Inm(A)			160			250
Number of poles			3, 4			3, 4
Rated current In(A),at 40℃,50℃,55℃			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	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(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	90-155-70-94		90-155-84-109	105-165-70-96		105-165-93-120
		4 P	120-155-70-94		120-155-84-109	140-165-70-96		140-165-93-120

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

Model number			CQM6T/A.RT-630			CQM6T/A.RT-800
Rated current of frame level Inm(A)			630			800
Number of poles			3, 4			3, 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	75/50	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	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 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-circuitcurentsetting value of the instantaneous tripper of the circuitbreaker for power distribution is 10ln.

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 instantarheous tripper is 20%of the short-circuit currentsetting value.

CQMGT/A.RT-160 Operating Characteristic Curve

CQMGT/A.RT-250 Operating Characteristic Curve

CQMGT/A.RT-630 Operating Characteristic Curve

CQMGT/A.RT-800 Operating Characteristic Curve

Outline and Installation Dimensions(mm)