A safety breakaway coupling for emergency separation of two lines, comprising: - a first coupling half comprising a first tubular housing defining an outer periphery and having an end and defining a first line end with a first self-sealing fluid barrier; - a second coupling half comprising a second tubular housing defining an outer periphery and having an end and defining a second line end with a second self-sealing fluid barrier; - two or more levers mounted at pivot points, having a longer lever arm and a shorter lever arm, wherein each longer lever arm is urged radially outwards in the pivoting direction, by an associated compression spring, and wherein the shorter lever arm is urged radially inwards with its end in the pivoting direction, in order to hold together the coupled coupling halves at the ends of the first tubular housing and the second tubular housing; characterized in that - at the end of the first tubular housing, the first coupling half has a first end flange or collar having an inclined surface and a bearing recess adjacent thereto, which is associated with a rolling body pivot surface provided at the respective lever; - at the end of the second tubular housing, the second coupling half has a second end flange or collar having inclined surfaces; - each lever has two pivot points, of which the first pivot point is a fulcrum which is defined by a front surface of an adjusting screw, and the second pivot point is the bearing recess adjacent to the inclined surface of the first end flange or collar, wherein the rolling body pivot surface provided on the respective lever is associated with the bearing recess; - the shorter lever arm of each lever is in the form of a locking lever provided with a detent lug and engages behind the inclined surface of the end flange or collar of the second coupling half; and that - the breakaway coupling is configured so that by virtue of the inclined surfaces, the force of the compression springs and of the lever arms of the locking levers, in the event of an excessive tensile force in the separation direction of the coupling halves (1, 2) the respective shorter lever arms of the locking levers will pivot radially outwards against the forces of the respective compression springs acting on the respective longer lever arms, so that the detent lugs release the end flanges or collars (11, 21), whereby the coupling halves separate from each other. - a first coupling half comprising a first tubular housing defining an outer periphery and having an end and defining a first line end with a first self-sealing fluid barrier; - a second coupling half comprising a second tubular housing defining an outer periphery and having an end and defining a second line end with a second self-sealing fluid barrier; - two or more levers mounted at pivot points, having a longer lever arm and a shorter lever arm, wherein each longer lever arm is urged radially outwards in the pivoting direction, by an associated compression spring, and wherein the shorter lever arm is urged radially inwards with its end in the pivoting direction, in order to hold together the coupled coupling halves at the ends of the first tubular housing and the second tubular housing; characterized in that - at the end of the first tubular housing, the first coupling half has a first end flange or collar having an inclined surface and a bearing recess adjacent thereto, which is associated with a rolling body pivot surface provided at the respective lever; - at the end of the second tubular housing, the second coupling half has a second end flange or collar having inclined surfaces; - each lever has two pivot points, of which the first pivot point is a fulcrum which is defined by a front surface of an adjusting screw, and the second pivot point is the bearing recess adjacent to the inclined surface of the first end flange or collar, wherein the rolling body pivot surface provided on the respective lever is associated with the bearing recess; - the shorter lever arm of each lever is in the form of a locking lever provided with a detent lug and engages behind the inclined surface of the end flange or collar of the second coupling half; and that - the breakaway coupling is configured so that by virtue of the inclined surfaces, the force of the compression springs and of the lever arms of the locking levers, in the event of an excessive tensile force in the separation direction of the coupling halves (1, 2) the respective shorter lever arms of the locking levers will pivot radially outwards against the forces of the respective compression springs acting on the respective longer lever arms, so that the detent lugs release the end flanges or collars (11, 21), whereby the coupling halves separate from each other.