Difference between high voltage load switch and vacuum circuit breaker

1. High voltage load switch can be broken with load and has the function of self-extinguishing arc, but its breaking capacity is very small and limited.

2. The high voltage isolation switch is generally not able to break with load. There is no arc extinguishing cover on the structure, and there is also an isolation switch that can break load.

3. High voltage load switch and high voltage isolation switch, can form an obvious disconnect point, most of the circuit breakers do not have isolation function, there are a few circuit breakers isolation function.

4. High voltage isolation switch does not have protection function, the protection of high voltage load switch is generally protected by fuse, only fast break and overcurrent.

5. The breaking capacity of high voltage circuit breakers can be made very high during manufacturing. It mainly relies on adding current transformer and secondary equipment to protect. With short circuit protection, overload protection, leakage protection and other functions. 

High voltage load switch is a kind of electrical appliance whose function is between high voltage circuit breaker and high voltage isolating switch. Used to control power transformers. The high voltage load switch has a simple arc extinguishing device because it can turn on and off certain load current and over load current. But it can not break the short circuit current, so it is generally used in series with high voltage fuse, with the help of fuse to short circuit protection.