A multi-pole electric connection device is described, comprising a multi-pole male electric connection device and a multi-pole female electric connection device, these devices comprising a front capsule comprising a seat inside which a module-holder core is adapted to be inserted, comprising suitable recesses designed to contain contact modules for contacts of an electric type and/or for transporting signals, the front capsule and the module-holder core being made of conductive material to keep a screening between the contacts and to keep unaltered the characteristics of the transmitted signals, these devices being mutually connectable by means of the respective male contacts coupled with the female contacts.