A pressure-type socket affording isolation

A connecting socket is described which has been developed for use with component group boards using printed wiring. Precious-metal contacts are employed. Connections to the board are made by operating a cam member after the board has been inserted, thus avoiding damage to the contact surfaces due to repeated insertion and withdrawal. The group board can be disconnected from the rest of the equipment by releasing the cam member, and arrangements can be made for this to be done automatically in cases of circuit failure.