Abstract: An operating element for the engaging and extraction of planar sub-assemblies, with a display element in the operating lever, a front element for a planar sub-assembly with operating element and component support for accommodating planar sub-assemblies.

Abstract: An actuating element for inserting and removing a flat module by leverage, the element having an end piece designed to be connected to a flat module. An actuating lever, which is pivotally mounted on the end piece, has at least one grip section and a locking element, which can be displaced, particularly slid between two connection positions. In a first connection position, the actuating lever retains the flat module in its inserted state and in a second connection position, the actuating lever is released to remove the module by leverage. The actuating element has a connecting element, which is activated in the first connection position of the locking element, which can be displaced into a third connection position, in which the actuating lever is retained in the first position, corresponding to the inserted state of the flat module and in which the connecting element is disconnected.

Abstract: A rack assembly (1) includes cross-connecting bars (5) and guide bars (15) for printed circuit boards (59). These guide bars each include a fixing device (36) for the placement of a receiving element (17) which has a contact zone (37) and is placed into electric contact on a cross-connecting bar. The invention also provides for front elements (13) having centering contacts (25) that protrude into, and thereby come into contact with, the contact zone, in a low-ohmic, current-carrying manner, when the front element is set in place. The receiving element preferably has a contact blade (54) which extends into a guide groove (26) of the guide bar.

Abstract: A contact spring connector that contains a holding strip, from which a contact spring leaf and a clamping leaf alternatingly extend in rows. A contact spring leaf has a contact leg, which is spread away from the holding strip and is connected with the holding strip via a cap area. A clamping leaf has a clamping leg connected with the holding strip by spring bands and from which a clamping element is spread away from between the spring bands. The decoupling of the contact spring leaf from the clamping leaf in particular results in ruggedness in respect to mechanical effects.

Abstract: A module rack has on its front at least one upper and one lower crossrail and at least one left and one right vertical corner profile strip. A vertical mounting groove is formed in at least one vertical corner profile strip. The vertical mounting groove faces away from the front of the module rack. Additional fastening capabilities may be provided on the front of the module rack. These additional fastening capabilities are used for external add-on parts such as a covering box, a handle, and cover panels. The module rack may be used for e.g., plug-in modules having electric circuits and components mounted on a printed circuit board.