| CPC H01R 13/631 (2013.01) [H01R 13/625 (2013.01)] | 11 Claims |

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1. A coding installation assembly for establishing a plug connection, the coding installation assembly comprising:
a plug connector and a mating plug connector configured to be inserted into the plug connector;
at least one first coding mechanism and one second coding mechanism compatible with the first coding mechanism, wherein the first coding mechanism is coupled to an inner surface of the plug assembly, and the second coding mechanism is coupled to an outer surface of the mating plug connector,
wherein the at least one first coding mechanism is coupled so as to be rotatable in relation to the plug connector such that a mutual orientation of the plug connector and the mating plug connector for establishing a plug-connection contact, is able to be established by rotating the first coding mechanism at least in portions relative to the plug connector.
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