Circuit Breaker MCCB, Moulded Case, with CB

• Breaking Capacity: Low Voltage Circuit Breakers
• Operation: Electric Type
• Speed: High-Speed Circuit Breaker
• Arc-extinguishing Medium: Air
• Installation: Fixed
• Structure: Moulded Case Circuit Breaker
• Poles Number: 3p 4p
• Type: Circuit Breaker
• Function: Conventional Circuit Breaker, Circuit-Breaker Failure Protection, Overcurrent Protection
• Certification: ISO9001-2000, CE, CB
• Rated Working Current: 16A to 1600A
• Production Standard: IEC60947-2;GB14048.2
• Rated Working Voltage: 690V and Below
• Transport Package: Carton
• Specification: 3P, 4P
• Trademark: KORLEN
• Origin: Wenzhou; Zhejiang; China
• HS Code: 8536200000
• Production Capacity: 500000PCS/Year

Product Description

Circuit Breaker MCCB, Moulded Case, with CB Certificate
The rated insulation voltage of this circuit breaker is 750V which is applicable for theelectricity distribution net of AC 50Hz, rated working voltage 690V and below, rated workingcurrent from 6A to 630A. It is used to distribute electric power and protect the line and poweapparatus 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 untripping 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	KNM3-1000N	KNM3-1250N	KNM3-1600N
Rated insulation voltage(V)		500	690	800	800	800	800	800	800	800
Rated pulse voltage(KV)		6	6	8	8	8	8	8	8	8
Rated working voltage ue (V)		AC690	AC690	AC690	AC690	AC690	AC690	AC690	AC690	AC690
Ultimate short-circuit breaking capacity lcu(KA) AC 50/60Hz	220/240V	85	85	85	85	85	50	50	50	50
	380/415V	36	36	36	50	50	50	50	50	50
	440V	35	35	35	42	42	50	50	50	50
	500V	25	60	60	60	60	40	40	40	40
	525V	22	22	22	22	22	40	40	40	40
	660/690V	8	8	8	10	10	30	30	30	30
Operative short-circuit Breaking capacity		50%	75%luc	75%luc	75%luc	75%luc	75%luc	75%luc	75%luc	75%luc
Isolation function
Usage category		A	A	A	A	A	B	B	B	B
Machanical life		50000	40000	20000	15000	10000	10000	10000	10000	10000
Electrical life		30000	20000	10000	6000	4000	5000	5000	4000	2000
	W	105	105	105	140	140	210	210	210	210
	H	161	161	161	255	255	327	327	327	327
	D	86	86	86	110	110	147	147	147	147