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CQX1 series Thermal Overload Relay with Temperature Compensation

The CQX1 series thermal overload relays are designed by CHAC Electric to provide reliable overload and phase - failure protection for AC motors operating at 50/60Hz, with voltages up to 690V and currents ranging from 0.1 - 93A under 8 - hour or uninterrupted duty. These relays offer comprehensive protection features, including phase - failure protection, clear ON/OFF status indication, temperature compensation to ensure stable operation under varying ambient temperatures, and both manual and automatic reset options to suit different application requirements. They comply with the IEC 60947 - 4 - 1 international standard and can be conveniently mounted onto contactors or installed as standalone units, making them highly versatile for various industrial motor control applications.

Product Details

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Overview and applications

1.Three-phase bimetallic strip design

2.Phase failure protection mechanism

3.Integrated tripping mechanism

4.Built-in testing function

Application

CQX1 series thermal overload relay are suitable for overload and phase-failure protection of AC motors with frequency of 50/60Hz,voltage up to 690V, current up to 0.1-93A under 8-hours duty or uninterrupted duty.

Functions provided by these relays, are phase-failure protection,ON/OFF indication, temperature compensation, and manual/automatic reset.

International Standard:IEC 60947-4-1

The relays can be mounted onto contactors or installed as single units.

Normal working conditions and installation conditions

◆Altitude: no more than 2000m

◆The ambient air temperature is -5°C~+40°C, and the average temperature within 24 hours does not exceed +35°C.

◆Atmospheric conditions: At +40°C, the relative humidity of the atmosphere does not exceed 50%, at lower temperatures, there can be a higher relative humidity, the monthly average minimum temperature of the wettest month does not exceed +25°C, the monthly average relative humidity also the maximum relative humidity is not more than 90%6, and the condensation on the product due to temperature changes is considered.

◆The pollution level is level 3.

◆The inclination of the mounting surface to the vertical surface does not exceed 5°.

◆In a non-explosive hazardous medium, there is no gas in the medium that is sufficient to corrode metals and destroy insulation and where conductive dust exists.

◆In place where is no significant shaking, shock and vibration.

Selection and ordering data

Products appearance	Rated current(A)	Matched fuse specifications(A)		Matched contactor model
Products appearance	Rated current(A)	aM	gG	Matched contactor model
	0.1~0.16	0.25	2	CQC5-09/CQC5-12/CQC5-18/CQC5-25
	0.16~0.25	0.5	2
	0.25~0.4	1	2
	0.4~0.63	1	2
	0.63~1	2	4
	1~1.6	2	4
	1.25~2	4	6
	1.6~2.5	4	6
	2.5~4	6	10
	4~6	8	16
	5.5~8	12	20
	7~10	12	20
	9~13	16	25
	12~18	20	35
	17~25	25	50
	23~32	40	63	CQC5-32/CQC5-38
	28~36	40	80	CQC5-32/CQC5-38
	23~32	40	63	CQC5-40/CQC5-50/CQC5-65/CQC5-80/CQC5-95
	30~40	40	100
	37~50	63	100
	48~65	63	100
	55~70	80	125
	63~80	80	125
	80~93	100	160