>  Product profile

The cabinet comprises of the smart 12 kV vacuum permanent magnet circuit breaker on pole, smart 12 kV permanent magnet (or spring) vacuum circuit breaker on pole, etc. It is used in 12 kV MV overhead line distribution network for breaking and closing of load current & overcurrent and short-current circuit, and is suitable for power construction and transformation of urban and rural power networks, mines, railways, etc.

>  Advantages and characteristics

(1) There are fewer transmission parts and it is highly reliable: By adopting the leadingsingle-coil monostable permanent magnet operation mechanism in the domestic market,the mechanism parts are reduced by 80%; compared with the spring

 mechanism,vulnerable components such as the mechanical buckle, gear chain, bearing spring andmotor coil are less used. Also, the permanent magnet mechanism adopts a whole-linearmotion mode, thus simplifying the operation mechanism to the greatest extent, andsignificantly improving reliability of the mechanism to elastic operation mechanism;

(2) The mechanical life of the operation mechanism is up to 20,000 times;

(3) The supporting three-phase integrated strut cylinder structure is fully closed, and thesealing performance is good;

(4) The circuit breaker has strong damp-proof and anti-condensation performance and isespecially suitable for use in severely cold or humid areas.