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VK12s-12P Vacuum circuit breaker with fixed pole

VK12s-12p indoor high-voltage vacuum circuit breaker with fixed pole is a kind of solid seal product with unique technology and special type certificate, which was designed by Shanghai Weikai Electric Co., Ltd. after its establishment. The main design concepts are as follows: the main circuit adopts the fixed pole to improve the environmental adaptability and insulation reliability of the circuit breaker; the mechanism design is improved to extend the mechanical life and improve the mechanical reliability. Reliable mechanical and electrical performance and extended mechanical and electrical life make maintenance free of circuit breaker possible
Product Information
VK12s-12p indoor high-voltage vacuum circuit breaker with fixed pole is a kind of solid seal product with unique technology and special type certificate, which was designed by Shanghai Weikai Electric Co., Ltd. after its establishment. The main design concepts are as follows: the main circuit adopts the fixed pole to improve the environmental adaptability and insulation reliability of the circuit breaker; the mechanism design is improved to extend the mechanical life and improve the mechanical reliability. Reliable mechanical and electrical performance and extended mechanical and electrical life make maintenance free of circuit breaker possible.


VK12s-12p circuit breaker is an indoor switchgear with rated voltage of 12kV and AC of 50 Hz. The product meets the requirements of GB 1984-2003, dl403-2000, IEC62271-100 and other relevant standards, and its performance reaches the level of m2-e2-c2.


Vk12s-12p circuit breaker can be equipped with special propulsion mechanism to form a handcart type unit, and can also be used for fixed installation unit. The circuit breaker is equipped with reliable interlocking unit, which can meet the "five prevention" protection function of the switch cabinet.


It also has the following advantages:


1. The superior mechanism performance makes the mechanical life of the circuit breaker as high as 30000 times


2. It has passed the type test of authoritative organization, breaking short circuit current for 50 times at full capacity


3. Breaking rated short circuit current DC component up to 57%


3. Pass 1.1 times of rated current temperature rise test


4. Strong environmental tolerance


5. Good interchangeability


6. Excellent corrosion resistance


7. Stable performance


8. It has been verified by type test of authoritative organization


9. Excellent comprehensive performance
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