Static switches are now replacing mechanical and electromechanical switches both because of several advantages are listed below :
- A static switch has no moving parts, therefore, maintenance cost is very low
- A static switch has a long operational life
- A static switch has no bouncing at the time of when is turning on
- On time of a static switch is of the order microseconds, it has therefore very high switching speed
- Inbuilt AC overvoltage protection
- High-performance AC line quality monitoring