The TNR-CH type signal lightning arrester circuit adopts two level protection, terminal type connection. It is applied to analog signal and switch quantity signal transmitted by twisted pair below 2MHz, to prevent damage caused by lightning overvoltage.

The series in the input circuit, using the 35mm standard rail is fixed, such as multi way can use multiple combinations of installation, input terminal (IN) connected to the signal input channel (OUT) is connected with a signal processing device. No inverse, the intermediate terminal is the ground end, connected to the ground confluence.