VS1-12 Indoor Vacuum Circuit Breaker
Inquire NowDescription
The VS1-12 Indoor Vacuum Circuit Breaker is a state-of-the-art medium voltage switchgear designed for reliable performance in indoor electrical systems. Operating at a rated voltage of 12kV with a frequency of 50Hz/60Hz, this innovative circuit breaker integrates advanced technology derived from the expertise of ABB Corporation in Switzerland and is further developed in China. Adhering to the stringent standards of GB1984 and IEC62271-100, the VS1-12 is engineered to meet the demands of modern electrical installations.
This vacuum circuit breaker is commonly mounted in switchgear panels such as KYN28 and XGN. It is particularly suited for applications requiring frequent operation, thanks to its high-speed recloser capability and reliable mechanical interlock. Available in both fixed and withdrawable types, the VS1-12 provides flexibility and convenience in various operational environments.
Constructed with composite insulated materials, the VS1-12 boasts a high level of insulation without pollution or explosion risk, ensuring safety and reliability in electrical operations.
Specifications
| Item | Unit | Data |
|---|---|---|
| Rated voltage | kV | 10 |
| Maximum working voltage | kV | 12 |
| Rated current | A | 630, 1250, 1600, 2000 |
| Rated short circuit breaking current | kA | 20, 25, 31.5 |
| Rated short circuit making current (peak) | kA | 50, 63, 80 |
| Rated withstand current (peak) | kA | 50, 63, 80 |
| Rated short-duration withstand current (4s) | kA | 20, 25, 31.5 |
| Rated insulation level | KV | 42 (fracture 48), 75 (fracture 85) |
| Mechanical life | Times | Spring Operation 10,000; Permanent Magnetic 30,000 |
| Rated operating voltage of closing coils (DC/AC) | V | 110, 220 |
| Rated operating voltage of opening coils (DC/AC) | V | 110, 220 |
| Main circuit resistance of each phase | μΩ | 630≤50; 1250≤40 |
| Permissible wearing accumulated depth for movable and fixed contact | mm | 3 |
Additional Information
- Clearance between open contacts: 11±1 mm
- Contacting travel: 4±0.5 mm
- Opening time: ≤ 0.05 s (under maximum operating voltage), ≤ 0.08 s (under minimum operating voltage)
- Closing time: ≤ 0.1 s
- Average opening speed: 0.9 ~ 1.2 m/s
- Average closing speed: 0.5 ~ 0.8 m/s
