Abstract: A radiation protective device for a fire-protecting lead-through intended to accommodate electric, metal-encased cables passing through a metal wall, said lead-through comprising a frame having its opening filled with packing pieces, stay strips and an arrangement for compressing the block formed of the packing pieces, the protective device including metal shield plates inserted in their respective packing piece in a plane parallel with the packing piece block and covering, together with the through-passed cables, the entire cross-sectional area of each packing piece and forming upon compression of the block a continuous metal shield which is in electrically conducting contact with the frame, the stay strips and the cable casings.

Abstract: A fireproof lead-through with a frame, comprising at least one frame half for fitting on one side of a wall with a rectangularly shaped pack of packing blocks through which cables pass filling the opening in each frame half, and engaging with it peripheral portions in channel-like profiled portions in each frame half. Stay strips with a special configuration engage with their ends in the profiled portions for stiffening the pack of blocks. The transit is made pressure-tight by the use of conventional wedging means or pouring composition.