Abstract: The fire block module includes a number of rectangular plate strips, arranged vertically and parallel to each other to form a grid layer. The grid layer is arranged horizontally in respect of the vertical direction of flame propagation occurring in the event of a fire, thus achieving good heat energy dissipation and preventing flame propagation.

Abstract: The fire block module includes a number of rectangular plate strips, arranged vertically and parallel to each other to form a grid layer. The grid layer is arranged horizontally in respect of the vertical direction of flame propagation occurring in the event of a fire, thus achieving good heat energy dissipation and preventing flame propagation.

Abstract: The invention relates to a subrack (9) for a composite subrack (14) for receiving modules. Furthermore, the invention relates to a composite subrack (14) with at least two subracks (9) arranged one vertically above the other. The invention is distinguished by the fact that the composite subrack (14) contains at least two subracks (9), the upper side (20) and underside (24) of which are respectively provided with at least one clearance (13) over a large area, and two shielding plates (7) are provided, shielding the upper side (20) of the upper subrack (9) and the underside (24) of the lower subrack (9).

Abstract: The invention relates to a subrack (9) for a composite subrack (14) for receiving modules. Furthermore, the tow subracks (9) arranged one vertically above the other. The invention is distinguished by the fact that the composite subrack (14) contains at least two subracks (9), the upper side (20) and underside (24) of which are respectively provided with at least one clearance (13) over a large area, and two shielding plates (7) are provided, shielding the upper side (20) of the upper subrack (9) and the underside (24) of the lower subrack (9).

Abstract: A shielding apparatus is connected in contacting fashion to a shielding ply of a backplane printed circuit board of a module chassis, is provided with contact openings at which the shielding apparatus can be contacted with metallic guide sleeves onto which plug connectors for light waveguides coming from the outside can be plugged. Specifically, contact openings are provided with star-shaped slots between which resiliently deflectable, radially resilient contact tongues are formed which engage an outside surface of the guide sleeves.

Abstract: A shielded mounting rack has a shielding plate (11) on its rear, which shielding plate (11) covers the back-panel wiring and is provided with apertures (12) for shielded plug connectors (1) which can be plugged on at the rear. The latter are in each case provided with a shielding casing (3) which has feathered contact tongues (4) which make contact with circumferential ground contact pins (10) on a back-panel wiring board (8). The ground contact pins (10) project into the apertures (12) in the shielding plate (11) and are pressed, by the contact tongues (4), against its inner wall. As a consequence, a fine-meshed ground connection is produced between the plug connector (1), the shielding plate (11) and the back-panel wiring (8).