Thermal Overload Protect Circuit Breaker Knm3

• Customization: Available
• Breaking Capacity: High Voltage Circuit Breakers
• Operation: Electric Type
• Model NO.: KNM3
• Speed: Normal Type Circuit Breaker
• Arc-extinguishing Medium: Air
• Installation: Fixed
• Structure: Moulded Case Circuit Breaker
• Poles Number: 3
• Type: Circuit Breaker
• Certification: ISO9001-2000
• Transport Package: Carton
• Specification: IEC60947-2
• Trademark: korlen
• Origin: Wenzhou
• Production Capacity: 30000PCS/Month

Product Description

The rated insulation voltage of this circuit breaker is 750V which is applicable for the electricity distribution net of AC 50Hz, rated working voltage 690V and below, rated working current from 6A to 630A. It is used to distribute electric power and protect the line and power apparatus from being overload and short-circuit protection of the motor. This circuit breaker can be installed vertically and horizontally.

This product complies with standard IEC60947-2, GB14048.2
 

NO.	testing current name	I/In	Assumed time	Starting situation
1	Assumed un- tripping current	1.05	2h(In>63A), 1h(In≤63A)	Cold state
2	Assumed tripping current	1.30	2h(In>63A), 1h(In≤63A)	Start right after the number 1 test

 

Type		KNM3-125N	KNM3-160N	KNM3-250N	KNM3-400N	KNM3-630N	KNM3-800N
Rated current In(A)		125A	160A	250A	400A	630A	800A
Rated insulation voltage(V)		500	690	800	800	800	800
Rated pulse voltage(KV)		6	6	8	8	8	8
Rated working voltage ue (V)		AC500	AC690	AC690	AC690	AC690	AC690
		DC250	DC500	DC750	DC750	DC750	DC750
Ultimate short-circuit breaking capacity lcu(KA) AC 50/60Hz	220/240V	40	50	65	65	65	65
	380/415V	25	35	35	35	35	35
	440V	16	20	30	30	30	30
	500V	12	12	25	25	25	25
	690V	-	8	14	20	20	20
Operative short-circuit Breaking capacity		.	.	.	.	.	.
Isolation function		A	A	A	A	B	B
Usage category		.	.
Mode of tripping unit	Unadjustable
	Adjustable thermal trip Unadjustable electromagetic trip			.	.
	Unadjustable			.	.	.	.
Machanical life		25000	25000	25000	20000	20000	20000
Electrical life		8000	8000	8000	7000	5000	5000
	L	78	90	105	140	210	210
	D	70	70	103.5	103.5	103.5	103.5
	H	120	120	170	254	268	268

Company Introduction



Wenzhou Korlen Electric Appliances Co., Ltd, It is a joint venture. My company is a manufacturer including design, development, produce and sale, professional producing MCB, MCCB, RCCB and AC contactor etc. Product enterprises. The company owns import and export power of self-run, expanding Europe and America, Middle East, Southeast Asia etc. Market, set a good Public praise.

The company have more than 1500 workers, including senior engineer among them, engineer at inside of more than 100 technician. And then set up to cover area more than 50 acres, construct area is more than 38000 square meters of the modern industrial zone, providing with the forerunner's standard laboratory and various examination equipments.

Under Korlen people to make great effort unremittingly, designed and developed by oneself, develop and produce the series of MCB, RCCB filled up local blank, attain inter-national advanced level, and acquire more than 20 national patents. The company acquires "30 strong eminent enterprises, top ten of export income, yueqing star class enterprise, attach importance to contract and keeps promise" title of honor for many times past years. Company still the initiative pass ISO 9001 management system verification and 14001 environments management system verification. Our product passed quality verification of domestic and international authority organization like the CB\ SEMKO\ NF\ SIRIM\ SNI\ CE \PCT\ TSE, In the meantime high breaking capacity breaker of our company in this city is the unique product which got " Yueqing famous brand product" by Yueqing people government.

Korlen Electric Appliances is willing to make friends with social public, the world outside businessman join hands together for prosperous society and development to build a brighter future.



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