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  • VS1-12/4000-275 vacuum circuit breaker
  • VS1-12-4000-275 VCB 4000A
VS1-12/4000-275 vacuum circuit breaker
VS1-12-4000-275 VCB 4000A

VS1-12/4000-275 Insulation Cylinder Trolley Type Vacuum Circuit Breaker 4000A

Model: VS1-12/4000-275

Description

The VS1-12/4000-275 vacuum circuit breaker is a high-performance medium-voltage switchgear component, engineered for demanding industrial and distribution applications requiring reliability, efficiency, and superior safety.
  • Product Detail
  • Technical Parameters

The VS1-12/4000-275 vacuum circuit breaker is a high-performance medium-voltage switchgear component, engineered for demanding industrial and distribution applications requiring reliability, efficiency, and superior safety.

Product Highlights:

Superior Breaking Performance: Employs advanced vacuum interrupter technology to achieve safe, reliable arc extinction, ensuring secure electrical circuit protection even in challenging conditions.
Ease of Maintenance: The draw-out structure allows quick and straightforward access for maintenance or replacement, reducing downtime and associated costs.
Smooth and Stable Operation: The VS1 spring-operated mechanism provides precise, responsive switching performance, designed to meet the highest industry standards.
Enhanced Insulation Properties: The use of an insulated cylinder design improves overall dielectric strength, providing robust isolation and reducing the risk of breakdowns due to environmental factors.
High Adaptability: Versatile for a wide range of industrial applications, including power distribution, manufacturing facilities, mining operations, and large infrastructure projects where high current and strong short-circuit breaking capacity are essential.

 

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)
6.1t should be installed in the places without fire, explosion, serious filth, chemical corrosion and violent VS1 ration.
No.
Item
Unit
Data
1
Rated voltage
kV
12
2
Rated frequency
Hz
50
3
Rated insulation level
1min power frequency withstand voltage
kV
42
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%

Dimensions for reference

VS1-12-4000-275 VCB drawing

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