Abstract: In an electrolysis apparatus comprisingelectrolytic cells (2), in which groups of electrodes are suspended and the longitudinal walls (17) of which are capped with two rows (19, 20) of supports (21, 22) for the suspension lugs (12, 16) of the electrodes, these rows extending on both sides of a median element (23) of electrical connection, andhandling means (5) for introducing a group of electrodes in a cell and for withdrawing it therefrom,the supports (21, 22) dominate the median element (23) of electrical connection, the lugs (12, 16) of the electrodes suspended in the cells extend beyond their supports (21, 22) and the handling means (5) are adapted to lift the electrodes by the under-side of the extremities of their lugs (12, 16).