VKM1 series of molded case circuit breakers are applied to frequently changeover the circuit of rated insulation voltage of 800V (VKM1-63 is 500V), AC 50/60Hz, rated voltage 690V or below (VKM1-63 is 415V), rated operating current 1250A, or start the motor not frequently (VKM1-800 without motor protection). The breakers provided with overload short-circuit and under-voltage protection function to protect the lines and power equipment from damage.

The product can be mounted vertically or horizontally.

2. Technical parameters

Model		VKM1-63		VKM1-125			VKM1-250			VKM1-400			VKM1-630			VKM1-800
Frame current Inm (A)		63		125			250			400			630			800
Rated current In (A)		(6),10 16,20 25,32 40,50 63		(10),16,20 25,32,40 50,63,80 125			125,140 160,180 200,225 250			250,315 350,400			400,500,630			630,700 800
Number of poles		3	4	2	3	4	2	3	4	2	3	4	2	3	4	3	4
Rated insulation voltage Ui (V)		AC500		AC800
Rated working voltage Ue (V)		AC415		AC415,AC690
Rated impulse withstand voltage Uimp (V)		6000		8000
Arcing distance (mm)		50								100
Breaking capacity grade		L	M	L	M	H	L	M	H	L	M	H	L	M	H	M	H
Limit short-circuit breaking capacity Icu (kA)	AC415V	25	50	35	50	85	35	50	85	50	65	100	50	65	100	75	100
Running short-circuit breaking capacity Ics (kA)	AC415V	18	35	22	35	50	22	35	50	35	42	65	35	42	65	50	65
Operation characteristics (times)	ON	6000					3000			2000			1500			1000
	OFF	8500					7000			4000			4000			2500
	total	14500					10000			6000			5500			3500

3. Outline and installation dimensions (mm)

Model	Pole No.	Outline Dimension (mm)				Installation Dimension (mm)
Model	Pole No.	L1	L2	L3	L4	a	b	d	H	H1
VKM1-63L	3	76	135	89	75	25	117	Φ3.5	23	71
VKM1-63M	3	76	135	97	82	25	117	Φ3.5	23	71
VKM1-63M	4	100	135	97	82	50	117	Φ3.5	23	71
VKM1-125L	2	65	150	89	67	/	129	Φ4.5	26	68
	3	92	150	89	67	30	129	Φ4.5	26	68
	4	120	150	89	67	60	129	Φ4.5	26	68
VKM1-125M	2	65	150	105	85	/	129	Φ4.5	26	68
	3	92	150	105	85	30	129	Φ4.5	26	68
	4	120	150	105	85	60	129	Φ4.5	26	68
VKM1-125H	2	75	150	105	85	/	129	Φ4.5	26	68
	3	106	150	105	85	30	129	Φ4.5	26	68
	4	140	150	105	85	60	129	Φ4.5	26	68
VKM1-250L	2	75	165	110	85.5	/	126	Φ4.5	30	74
	3	106	165	110	85.5	35	126	Φ4.5	30	74
	4	140	165	110	85.5	70	126	Φ4.5	30	74
VKM1-250M	2	75	165	125	104	/	126	Φ4.5	30	74
	3	106	165	125	104	35	126	Φ4.5	30	74
	4	140	165	125	104	70	126	Φ4.5	30	74
VKM1-250H	2	75	165	125	104	/	126	Φ4.5	30	74
	3	106	165	125	104	35	126	Φ4.5	30	74
	4	140	165	125	104	70	126	Φ4.5	30	74
VKM1-400L	3	150	257	151	103	44	194	Φ7	63	128
VKM1-400L	4	198	257	151	103	95	194	Φ7	65	89
VKM1-400M	3	150	257	151	103	44	194	Φ7	63	128
VKM1-400M	4	198	257	151	103	95	194	Φ7	65	89
VKM1-400H	3	150	257	151	103	44	194	Φ7	63	128
VKM1-400H	4	198	257	151	103	95	194	Φ7	65	89
VKM1-630L	3	182	270	155	110	58	200	Φ7	62.5	134
VKM1-630L	4	240	270	155	110	116	200	Φ7	65	89
VKM1-630M	3	182	270	155	110	58	200	Φ7	62.5	134
VKM1-630M	4	240	270	155	110	116	200	Φ7	65	89
VKM1-630H	3	182	270	155	110	58	200	Φ7	62.5	134
VKM1-630H	4	240	270	155	110	116	200	Φ7	65	89
VKM1-800L	3	210	280	150	108	70	243	Φ7	65.5	105
VKM1-800L	4	280	280	150	108	70	243	Φ7	65.5	105
VKM1-800M	3	210	280	150	108	70	243	Φ7	65.5	105
VKM1-800M	4	280	280	150	108	70	243	Φ7	65.5	105
VKM1-800H	3	210	280	150	108	70	243	Φ7	65.5	105
VKM1-800H	4	280	280	150	108	70	243	Φ7	65.5	105

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