The device (1) for the connection of a towing vehicle to a trailer, comprises: at least one base frame (2) associable with a towing vehicle; at least one attachment portion (3) which is adapted to engage with a trailer and associated movable in a sliding manner with the base frame (2) along at least one adjustment direction (4); detachable blocking means for blocking the position of the attachment portion (3) with the base frame (2) along the adjustment direction (4); wherein it comprises at least one actuating assembly (9) of the attachment portion (3) associated with the base frame (2) and provided with motor means (10) kinematically connected to the attachment portion (3) to command the movement thereof along the adjustment direction (4).