Pluggable lightning current and surge arrester combination (type 1+2/Class I+II arrester) consisting of protective plugs and base element for DIN rail mounting. Protection circuit for 3-phase power supply networks, with combined N and PE in one conductor (5-wire system: L1, L2, L3, N, PE). Equipment includes enclosed spark gaps with ignition mechanism for triggering the response voltage, directly parallel connected varistors, and an additional pluggable sum current spark gap between N and PE. Function monitoring is available for Class I and Class II arresters, with disconnection of the individual L-N protection paths in the event of a fault. There is operating current-free (mechanical) optical fault indication and remote fault indication in the L-N paths for Class I and Class II arresters via a common potential-free changeover contact. The basic element can be mounted with variable connections (outer conductor from above or below). Protective plugs can be inserted into the base element rotated by 180° (plug inscription legible). Mechanical coding of the base element and plug prevents incorrect insertion of connectors. There is a labelling option for protective plugs and terminals, as well as biconnect terminals for connecting round conductors and wiring bridges.