Hinge and system for detachably connecting a door to a frame

A hinge for detachably connecting a door to a frame, comprising:

• a frame part for fastening to the frame,
• a door part for fastening to the door,
• a hinge pin with a pin axis, and
• a locking element,
• wherein the frame part and the door part can be moved relative to one another along the pin axis between a swivel position and an assembly position,
• wherein the frame part and the door part are connected to one another in the swivel position in such manner that the frame part and the door part can be swivelled relative to one another about the pin axis between an open position and a closed position,
• wherein the locking element can be adjusted from a locking position to a release position,
• wherein the movement of the frame part and of the door part relative to one another along the pin axis from the swivel position to the assembly position is blocked in a positive-locking manner by the locking element in the locking position and is released in the release position, and
• wherein the frame part and the door part can be positionable relative to one another between two different swivel positions for connecting the door to opposing sides of the frame, and
• wherein the locking element is held on the frame part or on the door part so as to be positionable between the locking position and the release position.