Disclosed is a sensor comprising a sensor element that detects a measurand, the sensor element being in electrical contact with a sensor circuit that processes values derived from data from a secondary coil and/or from the measurand. The sensor circuit is in electrical contact with an ex-circuit. The sensor circuit is supplied a maximum input voltage and a maximum input current. The ex-circuit includes the secondary coil that receives an electrical signal from a primary coil. The electrical signal includes the data that are modulated onto the electrical signal. The sensor also includes a voltage limit that limits the voltage of the electrical signal to the maximum input voltage of the sensor circuit and a current limit that limits the current of the electrical signal to the maximum input current of the sensor circuit. Also disclosed are a sensor arrangement and a use of a sensor.