A process for the preparation of a medium-voltage - or high-voltage switch for outdoor applications with a vacuum interrupter chamber (3), in the switching contacts are provided, for driving at least one of the electric switching contacts of a drive rod (4) is provided, which acts directly on the corresponding switching contact, for protection against uv - light within an insulating housing (2) of the switch is arranged and consists of a plastics material which is coated with silicone, wherein the drive rod (4) in the production by immersing or spraying is coated with silicon, and before coating the surface of the drive rod (4) is provided with an adhesion agent.
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