Automatic switch-off for small DC motors

This device is switching off small DC motors, if current reaches a defined value (e.g. 0,1A - 1A). It works with both polarities of the supply voltage (5-24V) and for this reason in both directions of rotation. 
Dimensions are 21.5 x 21,5 x 7 mm.
 
This particular device is driving small 24V DC gear motors for blinds and shutters.
The motor must be switched off when it achieves its limit in both directions.