Abstract: An electrical switching device for fault-current, overcurrent and short-circuit current protection, has a contact point in a current path and a switching mechanism for permanently opening the contact point. The switching device further has a configuration for detecting the fault current, the overcurrent and the short-circuit current, and contains two permanent magnets and a core. The core is disposed between the like poles of the permanent magnets which point toward one another and one of which is fixed and the other is guided such that it can move. The permanent magnets are at least partially surrounded by a coil through which a fault, an overcurrent or a short-circuit current flows. When a current flow occurs in the coil, the magnetic field is changed causing a relative movement of the moving part, and the movement is transmitted to the contact point.

Abstract: An electrical service distribution board is accommodated in a housing, has a feed conductor that is inserted into the housing and has outgoer conductors that lead to individual loads. Electrical service devices with different protection tasks, such as fault current protection, short circuit or over-current protection and the like, which can be connected to the feed conductor and to the outgoer conductors by a plug connection via a connection system which contains connection conductors connected to them. A mounting plate is providing for holding the service devices, with the connection conductors disposed underneath the mounting plate and the mounting plate having openings into which plug elements which are disposed on the service devices can be inserted.

Abstract: An electrical switching device for fault-current, overcurrent and short-circuit current protection, has a contact point in a current path and a switching mechanism for permanently opening the contact point. The switching device further has a configuration for detecting the fault current, the overcurrent and the short-circuit current, and contains two permanent magnets and a core. The core is disposed between the like poles of the permanent magnets which point toward one another and one of which is fixed and the other is guided such that it can move. The permanent magnets are at least partially surrounded by a coil through which a fault, an overcurrent or a short-circuit current flows. When a current flow occurs in the coil, the magnetic field is changed causing a relative movement of the moving part, and the movement is transmitted to the contact point.

Abstract: An electrical service distribution board is accommodated in a housing, has a feed conductor that is inserted into the housing and has outgoer conductors that lead to individual loads. Electrical service devices with different protection tasks, such as fault current protection, short circuit or over-current protection and the like, which can be connected to the feed conductor and to the outgoer conductors by a plug connection via a connection system which contains connection conductors connected to them. A mounting plate is providing for holding the service devices, with the connection conductors disposed underneath the mounting plate and the mounting plate having openings into which plug elements which are disposed on the service devices can be inserted.

Abstract: A service switching device is described. The service switching device has a thermal release, an electromagnetic release, a switching mechanism with a latching point, a contact point with a moving contact piece and a stationary contact piece. When an over-current condition occurs, the thermal release unlatches the latching point so that the contact points are opened permanently and, when a short-circuit current occurs, the electromagnetic release moves the moving contact piece to the open position. The service switching device has a housing and an associated actuator in the form of a piezoelectric bending strip, which likewise acts on the latching point in order to open the contact point permanently, with a fault current detection device being provided, whose output signal drives the actuator when a fault current occurs.

Abstract: Receiver configuration for microwave signals with a receiver antenna, a rectifier circuit and a detector circuit, wherein only one single antenna is provided to receive a vertically polarized energy signal and a horizontally polarized data signal. It has separate detector circuits available for the energy signal and the data signal. The detector circuit for the energy signal consists of a voltage doubling circuit to generate an operating voltage and the detector circuit for the data signal consists of a diode with a shunt resistor to generate a modulated DC voltage.