For a capacitor (1), in particular an intermediate circuit capacitor for a polyphase system, having a first plane electrode and a second plane electrode opposite to the first plane electrode at a distance; at least one capacitor structure having at least one dielectric and arranged between the first plane electrode and the second plane electrode; a first voltage layer of an adjacent plane in an extension part of the side face of the first plane electrode; at least one first pole joint which is in contact with the first voltage layer; and at least one second pole joint which is in contact with the second plane electrode. Each first voltage layer guides around the capacitor structure so as to allow the first voltage layer of the capacitor and the second plane electrode to form overlapping regions. The first voltage layers and the second plane electrodes are mutually parallel to each other in the overlapping regions and are up-down overlapped at the bottom side of the capacitor in a way of being mutually separated through slits. The first voltage layers are arranged on outer side faces, opposite to the capacitor structure, of the second plane electrodes.