A self belay arrangement for fall arrest systems, in particular for climbing applications, comprising - a locking device, to which a rope is attachable, and - a connector element, which is performed to be attached to a safety harness of a user and to which the locking device is coupled when the user intends to climb up a climbing wall, a ladder or other extending structures, - a retainer element is provided, whereas the retainer element is performed to hold the locking device when the connector element is detached from the locking device, wherein the locking device features a receiving mouth for receiving the connector element when the connector element is coupled to the locking device, and wherein the locking device features a retainer opening for retaining at least a part of the retainer element when the locking device is attached to the retainer element, wherein the locking device features securing means, whereas the securing means are movable arranged in the locking device to secure and release the connector element to or from the locking device, whereas the securing means are performed to interact with the retainer element, wherein the securing means comprises at least one rotating disc (23, 24), wherein in case the locking device is arranged at the retainer element, the rotating disc (23, 24) can be rotated freely, wherein the locking device can be removed from the retainer element only if the rotating disc (23, 24) is rotated at a specific angle insured by the connector element, the securing means is configured to automatically release the interconnection between the locking device and the retainer element when the connector element has rotated the at least one rotating disc (23, 24) at the specific angle by means of a single insertion movement, and wherein the securing means is further configured to automatically release the interconnection between the locking device and the connector element when at least part of the retainer element is inserted into the retainer opening of the locking device so that the at least one rotating disc (23, 24) can rotate freely by means of a single insertion movement. - a locking device, to which a rope is attachable, and - a connector element, which is performed to be attached to a safety harness of a user and to which the locking device is coupled when the user intends to climb up a climbing wall, a ladder or other extending structures, - a retainer element is provided, whereas the retainer element is performed to hold the locking device when the connector element is detached from the locking device, wherein the locking device features a receiving mouth for receiving the connector element when the connector element is coupled to the locking device, and wherein the locking device features a retainer opening for retaining at least a part of the retainer element when the locking device is attached to the retainer element, wherein the locking device features securing means, whereas the securing means are movable arranged in the locking device to secure and release the connector element to or from the locking device, whereas the securing means are performed to interact with the retainer element, wherein the securing means comprises at least one rotating disc (23, 24), wherein in case the locking device is arranged at the retainer element, the rotating disc (23, 24) can be rotated freely, wherein the locking device can be removed from the retainer element only if the rotating disc (23, 24) is rotated at a specific angle insured by the connector element, the securing means is configured to automatically release the interconnection between the locking device and the retainer element when the connector element has rotated the at least one rotating disc (23, 24) at the specific angle by means of a single insertion movement, and wherein the securing means is further configured to automatically release the interconnection between the locking device and the connector element when at least part of the retainer element is inserted into the retainer opening of the locking device so that the at least one rotating disc (23, 24) can rotate freely by means of a single insertion movement.