Abstract: A connection module, in particular a junction block, having connection terminals that are interconnectable by means of moving conductive pieces that can be driven from outside the module. A box of insulating material contains the connection terminals and respective electric link strips for each module, which strips are fixed and terminate in individual extensions serving as contact elements, said extensions extending parallel to a common plane inside the box, with elements on any one level being in alignment. A conductive piece includes at least one comb of parallel spring-blade contact clips enabling it to come into contact with the extensions on a given level by the clips coming astride them when a drive member carrying the clips is moved inside the box from outside the box where said drive member has a handle-forming head.