Patent ID: 8512068

Claim:
A conductor insertion plug comprising: a grip section having an opening for receiving a conductor cable; and at least one conductive plug section provided for connection with the condor cable for insertion into a conductor insertion opening in a spring force terminal, wherein the spring force terminal has an insulating material housing with at least one busbar inserted therein and at least one clamping spring, wherein the at least one clamping spring has a clamping edge which is oriented at an acute angle in relation to an electrical conductor which is inserted into the conductor insertion opening and, together with an opposite section of the busbar, forms a clamping point for the electrical conductor, and wherein the at least one conductive plug section which is located outside the grip section is formed, at least in a contact region which is intended to make contact with the clamping spring, with at least two layers comprising a first layer which faces the clamping spring and is composed of a first metal material and a second layer which faces the busbar and is composed of a second metal material, and wherein the first layer is harder than the second layer, and the second layer has a higher electrical conductivity than the first layer.