A plug connection for electrically and mechanically coupling at least two electrical conductors, having - a coupling with at least one bushing element which is arranged in a coupling housing of the coupling and which is for receiving at least one pin contact in a form-fitting manner and with a lever with at least one locking element, said lever being rotatably mounted at the coupling housing in an orthogonal manner relative to a plug-in direction, - a pin strip with at least one pin contact arranged in a pin strip housing of the pin strip and with at least one recess introduced into the pin strip housing for receiving the at least one locking element, - wherein, in a pre-locking position of the lever, the coupling housing can be arranged at least in sections on the pin strip housing in a form-fitting manner and the at least one locking element is arranged adjacent to the at least one recess and by rotating the lever the at least one locking element can be brought into an operative connection with the at least one recess, - a first projection is arranged on the lever, - wherein the first projection is arranged on a side of the lever facing the pin strip housing, - wherein on the pin strip housing a second projection is arranged on a side facing the lever, - wherein the first and second projections are arranged between the lever and the pin strip housing, - wherein the first projection on the lever and the second projection on the pin strip housing are positioned such that they are arranged in succession in the pre-locking position of the lever, - wherein the first and second projections are situated one after another in the pre-locking position of the lever, - wherein, when a plugging force is applied onto the coupling housing, a counter force which is directed against the plugging force is generated on the lever by the first and second projections, characterized in that the lever is completely pivoted from the pre-locking position into the final locking position by the counter force, - wherein the lever is designed to be bistable in such a way that raising the lever from the pre-locking position results in an independent moving of the lever into the final locking position. - a coupling with at least one bushing element which is arranged in a coupling housing of the coupling and which is for receiving at least one pin contact in a form-fitting manner and with a lever with at least one locking element, said lever being rotatably mounted at the coupling housing in an orthogonal manner relative to a plug-in direction, - a pin strip with at least one pin contact arranged in a pin strip housing of the pin strip and with at least one recess introduced into the pin strip housing for receiving the at least one locking element, - wherein, in a pre-locking position of the lever, the coupling housing can be arranged at least in sections on the pin strip housing in a form-fitting manner and the at least one locking element is arranged adjacent to the at least one recess and by rotating the lever the at least one locking element can be brought into an operative connection with the at least one recess, - a first projection is arranged on the lever, - wherein the first projection is arranged on a side of the lever facing the pin strip housing, - wherein on the pin strip housing a second projection is arranged on a side facing the lever, - wherein the first and second projections are arranged between the lever and the pin strip housing, - wherein the first projection on the lever and the second projection on the pin strip housing are positioned such that they are arranged in succession in the pre-locking position of the lever, - wherein the first and second projections are situated one after another in the pre-locking position of the lever, - wherein, when a plugging force is applied onto the coupling housing, a counter force which is directed against the plugging force is generated on the lever by the first and second projections, characterized in that the lever is completely pivoted from the pre-locking position into the final locking position by the counter force, - wherein the lever is designed to be bistable in such a way that raising the lever from the pre-locking position results in an independent moving of the lever into the final locking position.