Load switch can cut off normal load current

Generally equipped with a simple arc extinguishing device, but its structure is relatively simple.
The picture shows a pneumatic high-pressure load switch. Its working process is as follows: when opening, under the action of opening spring, the main shaft rotates clockwise. On the one hand, the piston moves upward through the crank slider mechanism to compress the body; On the other hand, through the transmission system composed of two sets of four connecting rod mechanisms, the main knife is opened first, and then the arc extinguishing knife is pushed to open the arc contact, and the compressed air in the cylinder blows out the arc through the nozzle. The high voltage load switch works like a circuit breaker.
Generally equipped with a simple arc extinguishing device, but its structure is relatively simple. The picture shows a pneumatic high-pressure load switch. Its working process is as follows: when opening, under the action of opening spring, the main shaft rotates clockwise. On the one hand, the piston moves upward through the crank slider mechanism to compress the gas; On the other hand, through the transmission system composed of two sets of four connecting rod mechanisms, the main knife is opened first, and then the arc extinguishing knife is pushed to open the arc contact, and the compressed air in the cylinder blows out the arc through the nozzle. When closing, through the main shaft and transmission system, the main knife and the arc extinguishing knife rotate clockwise at the same time, and the arc contact head closes first;
The spindle continues to rotate so that the main contact subsequently closes. During the closing process, the opening spring stores energy simultaneously. Because the load switch can not break the short circuit current, it is often combined with the current limiting high voltage fuse. The current limiting function of the current limiting fuse can not only complete the opening
The task of breaking the circuit can also significantly reduce the thermal and electric force effects caused by short circuit current