A plug housing with a first and a second housing part, wherein the first and second housing part form between them a cable channel, wherein the cable channel has a cable channel longitudinal axis which determines a cable guidance direction, and the cable channel contains at least one strain and pressure relief means for fixing a cable securely against strain and pressure, wherein in the non-mounted state, the second housing part opens the cable channel for cable insertion and closes it in a mounted state, wherein the at least one strain and pressure relief means, is characterized by: a) at least one leaf spring element which has a middle part and a first side part and second side part bent away therefrom, wherein the first side part is elastically bent away from the middle part via a first bending edge, and the second side part is elastically bent away from the middle part via a second bending edge which lies opposite the first bending edge on the middle part are bent elastically towards the cable in such a way that they narrow the cable duct; b) wherein the middle part extends along a middle part longitudinal axis between the first and the second bending edge, the first and the second bending edge are each formed perpendicularly to the middle part longitudinal axis, and the middle part longitudinal axis lies substantially in a common plane with the cable channel longitudinal axis; c) wherein the first side part may assume a variable acute first angle to the middle part, and the second side part may assume a variable acute second angle to the middle part, and a first end portion of the first side part lying opposite the first bending edge may assume a variable first height towards the middle part, and a second end portion of the second side part lying opposite the second bending edge may assume a variable second height towards the middle part; d) wherein the first and second side part are formed to constrict the cable channel so far that, in mounted state of the plug housing with the cable inserted, the respective first and second end portion press against the cable with a respective elastic force and thus fix the cable securely against strain and pressure. a) at least one leaf spring element which has a middle part and a first side part and second side part bent away therefrom, wherein the first side part is elastically bent away from the middle part via a first bending edge, and the second side part is elastically bent away from the middle part via a second bending edge which lies opposite the first bending edge on the middle part are bent elastically towards the cable in such a way that they narrow the cable duct; b) wherein the middle part extends along a middle part longitudinal axis between the first and the second bending edge, the first and the second bending edge are each formed perpendicularly to the middle part longitudinal axis, and the middle part longitudinal axis lies substantially in a common plane with the cable channel longitudinal axis; c) wherein the first side part may assume a variable acute first angle to the middle part, and the second side part may assume a variable acute second angle to the middle part, and a first end portion of the first side part lying opposite the first bending edge may assume a variable first height towards the middle part, and a second end portion of the second side part lying opposite the second bending edge may assume a variable second height towards the middle part; d) wherein the first and second side part are formed to constrict the cable channel so far that, in mounted state of the plug housing with the cable inserted, the respective first and second end portion press against the cable with a respective elastic force and thus fix the cable securely against strain and pressure.