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VK12-12(G) Vacuum circuit breaker with special for high altitude area

VK12-12 (G) series indoor medium voltage AC vacuum circuit breaker is a plateau type circuit breaker developed by our company on the basis of VK12-12 products. It is suitable for power systems with rated voltage of 12kV and below and three-phase AC 50Hz. It is used in conjunction with KYN28A-12 plateau type switchgear, especially for plateau areas within 3000 meters of sea level
Product Information


Product introduction of VK12-12(G) series indoor medium voltage vacuum circuit breaker
VK12-12(G) series indoor medium voltage AC vacuum circuit breaker is a high-profile circuit breaker developed by our company on the basis of VK12-12 products. It is suitable for power system with rated voltage of 12KV and below, three-phase AC 50Hz, and KYN28A. The -12 high prototype switchgear is especially suitable for use in highland areas up to 3,000 meters above sea level.
The VK12-12(G) circuit breaker complies with the relevant domestic standards such as GB, DL and IEC, and its performance reaches the level of M2-E2-C2.
The VK12-12(G) circuit breaker is equipped with a special propulsion mechanism to form a handcart unit. The circuit breaker is equipped with a reliable interlocking unit to meet the user's “five-proof” protection function.
Product Information of VK12-12(G) Series Indoor Medium Voltage Vacuum Circuit Breaker  
1.Meet the requirements for use within 3,000 meters above sea level 

The circuit breaker adopts a high-prototype arc-extinguishing chamber and insulation performance structure to improve the insulation strength of the circuit breaker switch cabinet and meet the requirements for use in high-altitude areas.
2.The main circuit uses composite insulation 
The vacuum interrupter and the primary conductive circuit are installed in the insulating cylinder. The insulating cylinder is cast by epoxy resin using the APG process. This composite insulating structure improves the insulation level of the circuit breaker and also reduces the dust in the arc extinguishing chamber. The accumulation of the surface effectively prevents the vacuum interrupter from being affected by external factors.
3.The circuit breaker can be used at low temperature -25 ° C 
The circuit breaker uses special low temperature grease and a buffer that can operate at low temperatures, allowing the circuit breaker to be used at low temperatures of -25 °C.
4.The circuit breaker is M2 circuit breaker 
 Superior mechanical performance, can be used in frequent operation, circuit breakers meet the requirements of M2 circuit breakers, mechanical life of small current circuit breakers up to 30,000.
5.The circuit breaker is E2 circuit breaker 
The circuit breaker meets the requirements of the E2 circuit breaker, the small current circuit breaker opens the full capacity short circuit current for 50 times, and the large current circuit breaker opens the full capacity short circuit current for 20 times.
6.The circuit breaker is a C2 circuit breaker  
During the breaking current of the circuit breaker, it has a very low probability of heavy breakdown and meets the requirements of the C2 class circuit breaker.
7.The circuit breaker uses spring operating mechanism   
The circuit breaker adopts a stable spring operating mechanism, which can realize electric AC/DC operation and manual operation. It can also be equipped with anti-jumping device, latching electromagnet, overcurrent, undervoltage and other components. Realize overcurrent, undervoltage, anti-jump and closing lock.

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