Strain relief device and plug connector

A plug connector, the plug connector comprising:

• a plug connector housing with a feed-through opening for feeding through a cable;
• and
• a strain relief device, including:
• a lamella element including a base element with a through-opening, which is set up for a feeding through of a strand-shaped element substantially parallel to an axial direction, and a lamella which projects from the base element along the axial direction, and
• a clamping body, which is annular in shape, and is arranged rotatably on the lamella element radially outside the lamella,
• wherein the lamella, in a front portion facing away from the base element, is ramp-shaped on its outer side facing the clamping body in a direction of rotation, with a distance to the through-opening that increases along the direction of rotation, and
• wherein the clamping body has at least one projection projecting radially inward, which is set up to couple with the front portion of the lamella when there is a rotation of the clamping body and to displace the lamella in a direction away from the clamping body.