| Breaking Capacity: | High Voltage Circuit Breakers |
|---|---|
| Operation: | Energy-storage Type |
| Speed: | Normal Type Circuit Breaker |
| Arc-extinguishing Medium: | Vacuum |
| Installation: | Insert |
| Structure: | Vcb |
| Customization: |
|---|
Suppliers with verified business licenses
Audited Supplier 
Summary: The VSG-12 Model is an indoor high voltage 12kV 3 Pole High Voltage Vacuum Circuit Breaker designed for power systems with a rated voltage of 12kV. It serves as a protective and control unit for power grid and industrial power equipment, compatible with KYN28(GZS1), XGN, GG-1A, and other switchgear panels. Related products include isolated handcart, fuse handcart, and voltage transformer handcart.
Structural Features: The VSG series of circuit breakers are suitable for rated voltages of 12-24kV, rated short circuit breaking currents of 20 and 50KA, and rated currents of 630-5000A. With a mechanical endurance of 20000 operations and 50 full capacity breaking abilities at small currents, it is ideal for applications with frequent operation, maintenance-free, and minimal service requirements. It can be used with Model KYN28A(GZS1) metal-enclosed switchgear and other fixed or handcart cabinets.
Applying Ambient Conditions:
Specification: For detailed specifications, please refer to the product documentation provided by Yueqing Liyond Electric Co., Ltd.
| No. | Name | Unit | Data | ||||||
| 1 | Rated voltage | kV | 12 | ||||||
| 2 | Rated current | A | 630 | 1000 1250 | 1600 2000 2500 3150 | ||||
| 3 | Rated short circuit breaking current | kA | 20 | 25 | 20 | 25 | 31.5 | 31.5 | 40 |
| 4 | Rated peak withstand current | kA | 50 | 63 | 50 | 63 | 80 | 80 | 100 |
| 5 | Rated short time withstand current | kA | 20 | 25 | 20 | 25 | 31.5 | 31.5 | 40 |
| 6 | Rated short circuit making current | kA | 50 | 63 | 50 | 63 | 80 | 80 | 100 |
| 7 | Switching operations of short circuit current | times | 50 | ||||||
| 8 | Rated operating sequence | O-0.3s-CO-180s-CO-180s-CO(40KA) | |||||||
| 9 | Mechanical endurance | times | 10000 | ||||||
| 10 | Rated breaking operations of the rated current | times | 20000 | ||||||
| 11 | Rated lighting impulse withstand voltage(full wave) | kV | 75 | ||||||
| 12 | 1 min. rated power frequency withstand voltage | kV | 42 | ||||||
| 13 | Contact stroke | mm | 9±1 | ||||||
| 14 | Over-travel of contacts | mm | 3.5±0.5 | ||||||
| 15 | Closing speed | m/s | 0.4∼0.8 | ||||||
| 16 | Opening speed | m/s | 0.9∼1.2 | ||||||
| 17 | Contact bouncing duration at closing operation | ms | ≤2 | ||||||
| 18 | Simultaneity of three phase closing operation | ms | ≤2 | ||||||
| 19 | Closing time | ms | 30∼70 | ||||||
| 20 | Opening time | m/s | 20∼50 | ||||||
| 21 | Distance between phases | mm | 150, 210, 275 | ||||||
| 22 | D.C component | 50% | |||||||
Yueqing Liyond Electric Co., Ltd. offers the Medium Voltage Handcraft VCB Circuit Breaker, suitable for indoor use with a rated current of 4000A. This front-mounted vacuum switchgear is crafted for efficiency and reliability.
FAQ
Suppliers with verified business licenses
Audited Supplier 
){kind=link}
){kind=link}