Indoor High-Voltage Vacuum Circuit Breaker
Product Overview
The VS1 (ZN63)-12 series indoor handcart-type high-voltage vacuum circuit breaker is a three-phase, 50 Hz, 12 kV rated indoor switchgear designed for the control and protection of industrial and mining enterprises, power plants, substations, and electrical installations, and is particularly suitable for applications involving frequent operation. It features an integrated operating mechanism and circuit-breaker body, allowing it to be configured either as a fixed installation unit or as a handcart unit when equipped with a dedicated pusher mechanism. The main circuit section can incorporate fully encapsulated pole assemblies, enabling miniaturization, high reliability, and maintenance-free operation. This product can be paired with KYN28A-12 (GZS) and other center-mounted handcart-type switchgear cabinets for fixed installations, or with XGN-series fixed switchgear cabinets for stationary applications.
Terms of Use
● Altitude not exceeding 2,000 meters;
● Ambient temperature: maximum +40°C; minimum -15°C
● Ambient humidity: daily average relative humidity ≤95%; monthly average relative humidity ≤90%.
● Seismic intensity: below magnitude 8
● Use in locations where there is no standing water, no risk of fire or explosion, no severe contamination, no chemical corrosion, and no severe vibration.
Technical Specifications
Project |
Unit |
Parameters |
|||
Rated voltage |
kilovolt |
12 |
|||
Maximum operating voltage |
kilovolt |
12 |
|||
Rated current |
A |
630 1250 |
630 1250 1600 2000 2500 3150 |
1250 1600 2000 2500 3150 4000 |
|
Rated short-circuit breaking current (rated thermal withstand current—RMS value) |
kA |
20/25 |
31.5 |
40 |
|
Rated dynamic stability current (peak) |
kA |
50/63 |
80 |
100 |
|
Rated Insulation Withstand Current (Rated Dynamic Stability Current—Peak Value) |
kA |
50/63 |
80 |
100 |
|
4S rated short-circuit withstand current |
kA |
20/25 |
31.5 |
40 |
|
Rated Insulation Level |
Withstand voltage during operation (before and after rated breaking) / 1 min power-frequency withstand voltage |
kilovolt |
To ground 42 (fracture 48) |
||
Impact and voltage withstand (before and after rated breaking) / Peak rated lightning impulse withstand voltage |
kilovolt |
To ground: 75 (fracture: 85) |
|||
Rated thermal stability time |
s |
4 |
|||
Rated Operating Sequence |
|
Break - 0.3 s - Close-break - 180 s - Close-break |
|||
Mechanical life |
time |
20000 |
|||
Rated short-circuit breaking current breaking operations |
time |
50 |
|||
Rated closing voltage of the operating mechanism (DC) |
V |
AC, DC 110, 220 |
|||
Rated Trip Voltage of the Operating Mechanism (DC) |
V |
AC, DC 110, 220 |
|||
Contact opening distance |
mm |
11±1 |
|||
Overtravel (contact spring compression length) |
mm |
3.5±0.5 |
|||
Three-phase opening and closing bounce time |
milliseconds |
≤2 |
|||
Contact closing bounce time |
milliseconds |
≤2 |
|||
Average tripping speed |
m/s |
0.9~1.2 |
|||
Average closing speed |
m/s |
0.5~0.8 |
|||
Trip time |
At the maximum operating voltage |
S |
≤0.05 |
||
At the minimum operating voltage |
S |
≤0.08 |
|||
Closing time |
S |
0.1 |
|||
Main circuit resistance of each phase |
microohm |
630 ≤50 |
1250 ≤45 |
||
Allowable cumulative wear thickness of moving and stationary contacts |
mm |
3 |
|||
External mounting dimensions
Previous
Contact Us
0411-83167110
No. 95, West Section of Shiji Road, Pulandian District, Dalian City, Liaoning Province
Leave a message to get a product quote.
Copyright © 2025 Dalian Fenghe Electric Technology Co., Ltd. All Rights Reserved.
电话：
邮箱：
WhatsApp：
在线客服添加返回顶部
屏蔽页面上图片的alt/title提示
右侧在线客服样式 1,2,3 2
图片alt标题设置： Dalian Fenghe Electric Technology Co., Ltd.
表单验证提示文本： Cannot be empty!
循环体没有内容时： No content!
CSS / JS 文件放置地