Small-magnitude currents that flow through the overvoltage protectors, which lose their sensitivity as the voltage they are exposed to increases, can damage electric and especially electronic devices. Therefore, it is very important to protect the energy supplies of electric and electronic products along with the protection of the energy input of buildings and installations. Additionally, it is required to use sensitive protective products (coaxials, spark gaps, etc.) in order to prevent the lightning discharge that cannot be absorbed and disperses underground from reaching the electronic devices inside the construction through the underground image and data cables.