Pluggable lightning current arrester, according to Type 1 / Class I, for use in power supply networks between N and PE. This pluggable lightning current arrester (Type 1/Class I arrester) serves as an N/PE spark gap, featuring an ignition mechanism for triggering the response voltage. It provides protection against incorrect plugs through mechanical coding of the base element and plug. There is an option for labeling protective plugs and connection terminals on the base element. It includes two biconnect terminals each for N and PE, allowing for the connection of round conductors and wiring bridges.