The invention relates to a busbar pack comprising n busbars (2) and at least n−1 insulating bars (4) the surfaces of which project beyond the busbars (2), one insulating bar (4) being interposed between two busbars (2), said stack of bars (2, 4) being immobilized in their position relative each other by devices. The invention is characterized in that at least one inner busbar (2) is provided with a reticular bar (6) on both sides thereof and has perforations (14) that are arranged to match crossbars (12) of corresponding reticular bars (6). The invention allows production of a busbar pack at least the inner busbar (2) of which is convection-cooled, said busbar cooling system being producible at low costs.