Abstract: A magnetically operated switch is disclosed, which has at least two electrical contacts and a permanent-magnet actuation device, at least regions of which are electrically conductive, which contacts and device can be arranged in a common housing. The magnetic actuation device in a first end position electrically conductively bridges the two contacts and, in the event of the presence of an attractor component, which interacts magnetically with the device, can be moved into a second end position, in which the electrical connection between the two contacts is interrupted. At least one of the electrical contacts can be made from a ferromagnetic material and/or coated with a ferromagnetic material. The magnetic attractive force between the ferromagnetic contact and the magnetic actuation device can be smaller than the magnetic attractive force between the magnetic actuation device and the attractor component.

Abstract: 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; H1, H2) 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; H1, H2) can change, e.g., the polarity becomes reversed.

Abstract: 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; H1, H2) 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; H1, H2) can change, e.g., the polarity becomes reversed.