LKM1 Molded Case Circuit Breaker

Type：Molded Case Circuit Breaker

Tel：+86-15325028697

E-mail：tony@cnatse.com

Add：Intersection of Danxia Road,Shuangyan Road,Lecheng Street,Yueqing,Wenzhou,Zhejiang,China

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Product Details

Product overview

LKM1 series moulded case circuit breaker(herein after called circuit breaker) adopts international advanced design and manufactural technology, it can be divided into L-type (standard type), M-type (higher type)according to the rated ultimate short circuit breaking capacity (Icu). With the features of small and compact, high breaking capacity, short arcing-over distance, anti-vibration, the circuit breaker is used popularly on land and marine products, which are applied for the power distribution network of AC 50Hz,rated insulation voltage 800V (LKM1-63 to 500V), rated working voltage 690V(LKM1-63 to 400V) and below, rated current up to 1600A. It can be used to distribute electric power and protect power equipment against overload, short circuit, undervoltage etc, It also takes protective effect when motors infrequently start and protects against overload, short circuit and lacking voltage. In the series, frame ranging from 63-630A three-pole product also comes with a transparent cover, it is convenient for customers to observe the product operation.

The circuit breaker can be installed vertically, or horizontally.Standard: IEC60947-2.

Product selection

1.Blank for power distribution,2 for motor protection

2.Blank for direct operation with handle, Z for operation with rotary handle, P for

motor-driven operation.

3.There are 2 types of N-pole for 4P breaker:

A:Without current release components, N-Pole is always at making status(not

breakers);

B:Without current release components, N-Pole is made with the other three poles.

Curve

Operating conditions

1.Temperature: -5℃~+40℃; the average value within 24h shall not exceed +35℃. For the circuit breaker with thermo-magnetic

release, +40℃ is set to be the standard temperature for ratings. For temperature not between -5℃~+40℃, please contact us for Temperature compensation correction;

2.Altitude: not exceed 2000m (Please contact with us for reduction coefficient if altitude at the mounted site exceed 2000m)

3.Pollution grade: Grade 3;

4.Air conditions:

At mounting site, relative humidity not exceed 50% at the max temperature of +40℃, higher relative humidity is allowable under lower temperature. For example, RH could be 90% at +20℃. Special measures should be taken when dew occurs.

Technical data

Type				LKM1-63		LKM1-125		LKM1-160	LKM1-250		LKM1-400		LKM1-630		LKM1-800		LKM1-1250		LKM1-1600
Poles		P		3	3,4	2,3	3,4	3	2,3,4		34,		34,		3, 4		3		3
Rated current In		A		10,16,20, 25,32,40, 50,63		10, 16,20, 25, 32,40,50, 63, 80,100,125		100,125, 140,160	100, 125, 140 160, 180, 200, 225, 250		225,250, 315,350, 400		400, 500, 630		630, 700, 800		800, 1000, 1250		1600
Rated insulation voltage Ui		V		500		800
Rated impulsewithstand voltage Uimp		V		6000		8000
Rated operation voltage Ue		V		AC400		AC400/690
Breaking capacity class				L	M	L	M	L	L	M	L	M	L	M	L	M	L	M	L	M
Limit short-circuitbreaking capacity Icu		kA	230V	35	50	35	50	35	35	50	50	75	50	75	-	-	-	-	-	85
			400V	25	35	25	50	35	35	50	50	65	50	65	75	75	85	85	75	85
			690V	-	-	8	10	8	8	10	10	20	10	20	-	30	-	30	-	30
Working short-circuit breaking capacity Ics		kA	230V	18	50	18	50	22	22	50	50	50	50	50	-	-	-	-	-	50
			400V	18	22	18	25	18	18	25	35	32.5	35	42.5	50	50	50	50	36	50
			690V	-	-	4	5	4	4	5	5	10	5	10	-	15	-	15	-	15
Arcing distance	mm			50							100
Operating frequency	Electrical life			3000		3000		3000	3000		2000		2000		2000		800		500
Operating frequency	mechanical life			20000		20000		20000	20000		10000		10000		10000		5000		2500

Inner accessories

	Release method and accessories code		Accessories installation and down-leads
Accessories name	Electromagnetic release	Complex release	LKM1-63 LKM1-125	LKM1-16 LKM1-250	LKM1-400 LKM1-630	LKM1-800 LKM1-1250
Without parts	200	300
Alarm contact	208	308
Shunt release	210	310
Auxiliary contact	220	320
Undervoltage release	230	330
Shunt release,Auxiliary contact	240	340
Shunt release,under-voltage release	250	350
Secondary auxiliary contact	260	360
Auxiliary contact,Undervoltage release	270	370
Shunt release, Alarm contact	218	318
Auxiliary contact, Alarm contact	228	328
Undervoltage release, Alarm contact	238	338
Shunt release,Auxiliary contact, Alarm contact	248	348
Secondary auxiliary contact,Alarm contact	268	368
Auxiliary contact,Alarm contact	278	378

Overview

Overall and mounting dimensions(mm)

Type	Overall size (mm)								Installation size (mm)
Type	W	L	H	W1	W2	L1	H1	H2	A	B	Φd
LKM1-63L	78	135	74	50	-	156	92	28	25	117	3.5
LKM1-63M	78	135	82	50	103	156	100	28	25	117	3.5
LKM1-125L	92	150	68	60	-	200	88	24	30	129	4.5
LKM1-125M	92	150	86	60	122	200	105	24	30	129	4.5
LKM1-160L	93	151	76	60	-	200	96	24	30	129	4.5
LKM1-250L	107	165	86	70	-	215	110	24	35	126	5
LKM1-250M	107	165	103	70	142	215	127	24	35	126	5
LKM1-400L	150	257	107	96	198	357	162	38	44	194	7
LKM1-400M	150	257	107	96	198	357	162	38	44	194	7
LKM1-630L	182	271	112	116	240	370	165	42	58	200	7
LKM1-630M	182	271	112	116	240	370	165	42	58	200	7
LKM1-800M	210	280	116	140	280	385	168	42	70	243	7
LKM1-1250M LKM1-1600M	210	406	158	140	-	610	193	60	70	375	11

Overall and mounting dimensions(mm)

Model	Dimensions					Ue(V)	Ie(A)	Mechanical life(times)	Motor power(W)
Model	A	B	C	D	E	Ue(V)	Ie(A)	Mechanical life(times)	Motor power(W)
LKM1-63	25	117	74	102	79	K1	≤0.5	14000	14
LKM1-100	30	129	90	116	77	K1	≤0.5	14000	14
LKM1-250	35	126	90	116	77	K1	≤0.5	14000	14
LKM1-400	44	194	130	176	115	K2	≤2	5000	35
LKM1-630	58	200	130	176	115	K2	≤2	5000	35
LKM1-800	70	243	130	176	115	K2	≤2	5000	35
LKM1-1250	70	300	130	176	115	K2	≤2	5000	35
LKM1-1600	70	300	130	176	115	K2	≤2	2500	35

Products

LKM1 Molded Case Circuit Breaker

Product Details