The invention relates to a cable gland plate for passing cables in a sealed fashion through a casing, such as the wall of a low voltage switchgear. The cable gland plate includes a substantially rectangular rigid frame (6) and, a set of gland elements (7,8,9) and a pressure unit (16). According to the invention, one pair of opposed edges (12) of the rigid frame includes slide bars (10); one pair of opposed edges of each gland element (7,8,9) includes slide posts (14) arranged to be fitted to the opposed slide bars; and the pressure unit (16) includes an actuator (35) carrying out two sequential pressure actions in such a way that the first pressure action presses the gland elements to each other in the lengthwise direction of the slide bars, and the second pressure action pushes the pressure unit against the frame and the adjacent gland elements.