Medium Voltage Indoor Fixed Type 3 Poles Air Insulated VD4 VCB Vacuum Circuit Breaker Wholesale

VS1-12 series of indoor vacuum breaker with common insulated cylinder is three-phrase A.C. 50 Hz indoor power distribution equipment with the rated voltage of 12KV. It’ s used for protecting controlling the electrical equipment in the fields of industry and mining enterprise, power plants and substation. This type vacuum circuit breaker conforms to national standards and the stipulation of IEC standard, the capability reaches grade of M2-E2-C2.

Get A Quote

Medium Voltage Indoor Fixed Type 3 Poles Air Insulated VD4 VCB Vacuum Circuit Breaker Wholesale

Electrical Products

Features
Technical Parameters
Dimensions

Features of VS1 circuit breaker

The product adopts composite insulation way,spring charged operation and rod push mechanism, with the characteristics of small volume, compact design and reliable operation. It can easily match with the switchgear and meet the “Five Preventions” demands.
This kind of vacuum circuit breaker can be used for many kinds of switchgear like KYN28(GZS1). This series of products include:VCB truck isolation truck and Fuse truck, etc.

Applying Ambient Conditions:
1. Ambient temperature: -10℃–+40℃
2. Ambient humidity: the average humidity of a day should be no more than 95%; the average humidity of a month should be no more than 90%;
3. Earthquake intensity: not exceed 8 degrees
4. Saturated vapor pressure: average pressure of a day should be no more than2.2kPa, the average pressure of a month should be no more than 1.8kPa;
5. The height above sea level: less than 1000m;(not including special requirements)
6. It should be installed in the places without fire, explosion, serious filth, chemical corrosion and violent vibration.

Technical Parameters of 3 Poles Vacuum Circuit Breaker

No.	Item		Unit	Data
1	Rated voltage		kV	12
2	Rated frequency		Hz	50
3	Rated insulation level	1 min power frequency withstand voltage	kV	42
3	Rated insulation level	Rated lightning impulse withstand voltage	kV	75
4	Rated current		A	630/1000/1250/1600/2000/2500/3150/4000
5	Rated short circuit breaking current Rated short-time withstand current (virtual value)		kA	20/25/31.5/40/50
6	Rated short circuit making current Dynamic stability rated current		kA	50/63/80/100/125
7	Rated short-circuit breaking current breaking time		Times	(above 40kA)
8	Rated short-circuit duration		S	4
9	Rated operation sequence			O-0. 3s-CO-180s-CO, O-180s-CO-180s-CO(above 40kA)
10	Mechanical life		Times	30000
11	Rated breaking current of single capacitor bank		A	630
12	Rated breaking current of back to back capacitor bank		A	400
13	Maximum D.C componen			50%