Hall sensor arrangement and use of a hall sensor arrangement in a belt lock

Hall sensor arrangement is disclosed for detection of the change in the position of two components which can move relative to one another into two end positions, with a Hall sensor with at least one Hall measurement field (H; H, H) and a field magnet. An actuator is provided for transmitting to the Hall sensor the change in the position of the two components which can move relative to one another. The Hall sensor and the field magnet are combined into a preassembled structural unit. When the position of the field magnet changes relative to the Hall sensor from one end position into the other end position the polarity of the magnetic field acting on the Hall measurement field (H; H, H) can change, e.g., the polarity becomes reversed.