Patent ID: 8908346

Claim:
An overvoltage protection device for protecting electrical low voltage installations, comprising: a lower device part, having input and output terminals for electrical conductors to be connected and contact elements which are connected to the input and output terminals, at least one upper device part, having at least one overvoltage protection element, and an intermediate device part which has mating contact elements which correspond to the contact elements of the lower device part enabling it to be plugged onto the lower device part and contact elements onto which mating contact elements of the upper device part can be plugged, wherein the intermediate device part has at least one longitudinal electrical element which is connected between the two mating contact elements thereof, and wherein the mating contact elements of the intermediate device part are one of plug pins and plug sockets and wherein the contact elements which are connected to the mating contact elements of the intermediate device part are the other of plug sockets and pins.