Is the safety device really useful?

The protector can not only protect the personal safety of people who get an electric shock, but also automatically cut off the power supply due to overvoltage of series lines, and reflect the hidden danger of leakage. It has also played a positive role in preventing electricity theft and reducing electricity charges.

When the protector is used as a switch, it is easy to produce large current sparks when it is turned on and off, which will burn the contacts of the protector and lead to poor contact, thus losing the performance of the protector.