Thermal Relay Overload Relay KNR8

Application
KNR8 series overload relay is suitable for 50Hz/60Hz, rated voltage up 690~1000V,rated current 0.1~400A in main circuit of long time working. It is used to protect AC three-phase asynchronous motor against overload and open phase.
This products conformity with IEC947-4, VDE0660,GB14048.4 standards .

Working condifion
●The altituelde should be not higher than 2000m;
●The ambient temperature:-25℃~55℃;
●The relative humidity: when +25℃,the relative humidity of air should be not more than 90%.

Feature
●Senies overload relay of thermal metal mode, tripping class is 10A;
●Setting current continuous adjustable device;
●Trip indicator;
●Test button;
●Reset button by hand operation and automatic reset button;
●Have a pair of No and Nc insulation contact in electricity;
●Mode of installation: install independently or can plug in the AC contator.

Type	Sphere of setting current(A)	Fuse specification (A)
		IEC947-4
		“1”	“2”
KNR8-50	0.1-0.16	35	0.5
	0.16-0.25		1
	1.25-0.4		1.6
	0.4-0.63		2
	0.63-1		4
	0.8-1.25		4
	1-1.6		6
	1.25-2		6
	1.6-2.5		6
	2-3.2		10
	2.5-4		10
	3.2-5		20
	4-6.3		16
	5-8		16
	6.3-10		25
	8-12.5		25
	10-14.5		25
KNR8-52	0.1-0.16	63	0.5
	0.16-0.25		1
	0.25-0.4		1.6
	0.4-0.63		2
	0.63-1		4
	0.8-1.25		4
	1-1.6		6
	1.25-2		6
	1.6-2.5		6
	2-3.2		10
	2.5-4		10
	3.2-5		16
	4-6.3		16
	5-8		20
	6.3-10		25
	8-12.5		25
	10-16		35
	12.5-20		35
	16-25		50
KNR8-55	1-1.6	100	6
	1.25-2		6
	1.6-2.5		6
	2-3.2		10
	2.5-4		10
	3.2-5		16
	4-6.3		16
	5-8		20
	6.3-10		25
	8-12.5		25
	10-16		35
	12.5-20		50
	16-25		50
	20-32		80
	25-36		80
	32-40		80
	36-45		80
Type	Sphere of setting current(A)	Fuse specification (A)
		IEC947-4
		“1”	“2”
KNR8-58	12.5-20	160	50
	16-25		50
	20-32		63
	25-40		80
	32-50		100
	40-57		100
	50-63		100
	57-70		125
	63-80	250	160
	70-88	250	160
KNR8-60	55-80	250	160
	63-90	250	160
	80-110	315	200
	90-120		224
	110-135		224
KNR8-61	55-80	250	160
	63-90	250	160
	80-110	315	200
	90-120		224
	110-135		224
	120-150		224
KNR8-59	0.1-0.16	25	0.5
	0.16-0.25		1
	0.25-0.4		1.6
	0.4-0.63		2
	0.63-1		4
	0.8-1.25		4
	1-1.6		6
	1.25-2		6
	1.6-2.5		6
	2-3.2		10
	2.5-4		10
	3.2-5		16
	4-6.3		16
	5-8		16
	6.3-10		16
	8-12.5	35	25
	10-16	63	35
	12.5-20	63	50
	16-25	63	50
	20-32	80	63
	25-40	125	80
	32-40	160	100
	40-57	160	125
	50-63	160	125
KNR8-62	55-80	250 250	160
	63-90	250 250	160
	80-110	250	200
	90-120 110-135 120-150	315	224
	135-160 150-180	355	224
KNR8-66	80-125	500	250
	125-200		315
	160-250		400
	200-320		400
	250-400	800	500

Q1: Is the KORLEN KNR8 thermal overload relay certified for Southeast Asian markets?

A: Yes, our KNR8 series thermal overload relay is fully SIRIM certified, making it ideal for immediate import and deployment in infrastructure and industrial projects across Malaysia and Southeast Asian markets.

Q2: What is the maximum current rating supported by the KNR8 thermal relay?

A: The KNR8 series is designed for heavy-duty industrial applications, offering an exceptionally wide current range that supports up to 800A. It provides superior protection for high-power AC electric motors against prolonged overloads and phase failures.

Q3: Can the KNR8 800A thermal relay be mounted directly to AC contactors?

A: Yes. The KNR8 800A thermal relay is engineered with a standard, rugged terminal design that allows for stable direct or independent mounting with compatible AC contactors, saving installation space inside your electrical switchboard or control panels.

Q4: Does KORLEN offer wholesale factory pricing and custom OEM solutions for KNR8 relays?

A: As a leading low-voltage electrical apparatus factory in China, KORLEN offers highly competitive direct-factory wholesale pricing and flexible OEM/ODM solutions. We can customize specifications, packaging, and logos to fit your regional distribution needs.

Source SIRIM Certified KNR8 800A Thermal Relays Directly From Factory

Protect your industrial motor systems with high-end KNR8 thermal relays. Contact KORLEN today for a competitive factory wholesale quote, technical datasheets, and custom bulk solutions!

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