A high-voltage distributor for an ignition system of an internal combustion engine has a distributor cap (10) of insulating material and a distributor rotor (14), which rotates in a distributor housing (11). A center electrode (12) and several fixed electrodes (13) are arranged in the distributor cap (10). The distributor rotor (14), which rotates synchronously with the camshaft of the internal combustion engine, in each case establishes an electrical connection between the center electrode (12) and one of the fixed electrodes (13) during its rotation around an axis of rotation (15). To achieve a long wearing contact between the center electrode (12) and the rotor electrode (16), the distributor rotor (14) carries a dome (20), which is coaxial to the distributor rotor and in which a carbon contacting body (24) is held slidably in a tight fit in a centrally located cylindrical guide therein. The carbon contacting body (24) is pressed with its front end, carrying a convex portion (25) with a tip, against the center electrode by a compression spring (23), which is supported on the rotor electrode (16). The distributor rotor has an integral annular wall surrounding the dome spaced a distance therefrom, which protrudes axially beyond a free end of the dome.