Non-rotationally symmetrical spark gap, in particular horn spark gap with deion chamber

A non-rotationally symmetrical horn spark gap with horn electrodes, a deion chamber and a multi-part insulating material housing as a support and receiving body (1) for the horn electrodes and the deion chamber (2), and means for conducting a gas flow related to an arc, wherein the insulating material housing is divided on a plane (3) defined by the horn electrodes and has two half shells, the half shells having an outer surface, and plug or screw connections (4;

• 5) which are lead out on an end face;
• characterized in that,
• with exception of sections of the plug or screw connections (4;
• 5) which are lead out, the insulating material housing is surrounded on all sides by a cooling surface (7;
• 14) formed as a sheathing which is near the housing and lies against the housing surface,
• wherein the cooling surface (7;
• 14) formed as a sheathing is at least partly supported on webs (8) present on the outer surface of the half shells which are designed to conduct the gas flow on the outer surface of the half shells.