Loss-prevention system, - in which the loss-prevention system has at least one securing element, a first component, a second component, and at least a first releasable connection and a third releasable connection, - in which the securing element is configured for securing the two components (141, 142) of the rail vehicle, wherein the securing element has a first portion, a first lug and a second lug, wherein the first portion is configured in the form of an elongate plate and extends in a first plane, wherein at least one first through-opening is arranged in the first portion, wherein the first through-opening is configured to at least partially receive the first releasable connection for fastening the securing element to the first component, wherein the first portion has a long side, wherein the first lug and the second lug are arranged opposite one another on the long side of the first portion and project from the first plane onto a common side of the first portion, wherein the first lug is configured to rest on the top side of the first component, and wherein the second lug is configured to support the second component on its underside and to secure it against falling off, - in which the first releasable connection engages through the first through-opening and fastens the securing element to the first component, - in which the third releasable connection, loaded in tension, connects the first component to the second component, - in which the first component and the second component are arranged at least partially between the first lug and the second lug, - in which the second component, upon failure and/or releasing of the third releasable connection, rests on the second lug and the second lug secures the second component against falling down, and the first lug, upon failure and/or releasing of the first releasable connection, rests on the first component and retains the securing element on the first component. - in which the loss-prevention system has at least one securing element, a first component, a second component, and at least a first releasable connection and a third releasable connection, - in which the securing element is configured for securing the two components (141, 142) of the rail vehicle, wherein the securing element has a first portion, a first lug and a second lug, wherein the first portion is configured in the form of an elongate plate and extends in a first plane, wherein at least one first through-opening is arranged in the first portion, wherein the first through-opening is configured to at least partially receive the first releasable connection for fastening the securing element to the first component, wherein the first portion has a long side, wherein the first lug and the second lug are arranged opposite one another on the long side of the first portion and project from the first plane onto a common side of the first portion, wherein the first lug is configured to rest on the top side of the first component, and wherein the second lug is configured to support the second component on its underside and to secure it against falling off, - in which the first releasable connection engages through the first through-opening and fastens the securing element to the first component, - in which the third releasable connection, loaded in tension, connects the first component to the second component, - in which the first component and the second component are arranged at least partially between the first lug and the second lug, - in which the second component, upon failure and/or releasing of the third releasable connection, rests on the second lug and the second lug secures the second component against falling down, and the first lug, upon failure and/or releasing of the first releasable connection, rests on the first component and retains the securing element on the first component.