Products details
7.2kv / 12kv VS1 High Voltage Indoor Vacuum Circuit Breaker
    Publish time 2019-01-31 20:08    
7.2kv / 12kv VS1 High Voltage Indoor Vacuum Circuit Breaker

1.Product introduction
VS1(ZN63A) series vacuum breaker is of indoor high voltage switchgear suitable for 7.2kv / 12kV .
Three-phase power system with 50Hz frequency in order to protect and control electrical appliances, 
and especially suitable for frequent operation at rated current or incessant open circuit due to unique 
advantages of vacuum circuit breaker.

Spring operating mechanism and breaker body parts adopt integration design.Thank for this design, 
breaker not only can be a fixed installation unit , but also can be a withdraw-able unit with a specially pushing framework.
For meet the requirement of XGN2,GG1A cabinet , the fixed type breaker can be install additionally interlock.  

2.Product Reference Standard 
Shall be in accordance with standards in GB1984-89 Alternating Current High Voltage Breaker, JB3855-1996 
3.6~40.5kV Indoor Alternating Current High Voltage Vacuum Breaker, and DL403-1999 Specification for Order 
of 10~35kV Indoor High Voltage Vacuum Breaker, and subject to relative requirements in IEC56 (87 publication).


3.Operating environment conditions
a) Normal operating environment condition
Highest temperature:+40oC
Lowest temperature:-15oC
b) Environment humidity
Daily average relative humidity: ≤95%
Monthly average relative humidity:≤90%
Daily average saturated vapor pressure:≤2.2×10-3 MPa
Monthly average saturated vapor pressure:≤1.8×10-3 MPa
c) Altitude: below 1000m area;
d) Earthquake intensity: no more than 8 degree;
e) he product shall be away from weep, fire and explosion, chemical corrosion and strenuous vibration place.

4. Technical Parameter

Item  Unit Data
Rated voltag KV 7.2, 12   
1 min power frequency withstand voltage   KV 42
Lightning impulse withstand voltage     KV 75
Rated frequency  Hz 50
Rated current A 630, 1250, 1600, 2000, 2500, 3150, 4000
Rated short-time withstand current   KA 20, 25, 31.5, 40
Rated withstand current(peak)         KA 50, 63, 80, 100
Rated short-circuit opening current  KA 20, 25, 31.5, 40
Rated short-circuit closing current KA 50, 63, 80, 100
Rated duration of short-circuit       S 4
Rated operating sequence   O-0.3s-CO-180s-CO 
Mechanical life   times 10000, 30000

5.Outline Dimensions

7.2kv / 
12kv circuit breaker / embedded pole styled / 150mm pole distance   




7.2kv / 12kv circuit breaker / assembly pole styled / 150mm pole distance





7.2kv / 12kv circuit breaker / embedded pole styled / 210mm pole distance





7.2kv / 12kv circuit breaker / assembly pole styled / 210mm pole distance




7.2kv / 
12kv circuit breaker / embedded pole styled / 275mm pole distance





7.2kv / 
12kv circuit breaker / assembly pole styled / 275mm pole distance


Tel: 0086-574-88431113

Fax: 0086-574-88478873

Email: info@macwey.com

Web: www.macwey.com

Add: No.218 Weier Road,Chongshou

   Industrial Park, Cixi City

   (Ningbo), China

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Tel: 0086-574-88431113

Fax: 0086-574-88478873

Add: No.218 Weier Road,Chongshou Industrial

         Park, Cixi City(Ningbo), China

Email: info@macwey.com

Web: www.macwey.com

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