<p>The system has an actuation element (7) pivotally mounted at free ends of both respective parts around an axis (6). Housing (1) and/or the actuation element are equipped with actuation units. The actuation units are actuated from a direction parallel to longitudinal axis of a tension element i.e. steel cable, or a direction parallel to the tension element by an elongate standard tool for switching a coupling element between a releasing position and a locking position. A bonding layer is provided at the coupling element for isolable connection.</p>
