A remotely controlled electronic general switch in at least one DC electrical power supply system, for ensuring a switching function and a control function of the power supply current and voltage, composed of an electronic module comprising: - a power input; - a power output; - an electronic circuit breaker or switching circuit, connected to the power input; - a measurement circuit provided with a contactless current sensor and a voltage sensor, said measurement circuit being connected in series between the switching circuit and the power output; - a communication interface connected to a bidirectional communications bus; - a controller or processor connected to the switching circuit and to the measurement circuit on the one hand, the controller being configured so that, when it receives a voltage and a current measurement from the measurement circuit, it is respectively capable of verifying whether the input voltage is in a predetermined interval and of controlling a current interruption by means of the switching circuit during a certain period, depending on the value of said current measurement, and connected to the communication interface on the other hand, the connection between the communication interface connected to the communications bus and the controller being bidirectional, so that the controller can be remotely programmed; - an addressing bus to which the controller is also connected, giving the possibility of selecting, among several ones, a particular power supply system connected to the general switch. said switch being characterized in that the connection between the controller and the measurement circuit is bidirectional and in that the measurement circuit comprises an additional winding which allows the controller to inject a test signal detectable by the current sensor and giving the possibility of verifying proper operation of the sensor at each ignition of the system and/or of determining the accuracy of the sensor. - a power input; - a power output; - an electronic circuit breaker or switching circuit, connected to the power input; - a measurement circuit provided with a contactless current sensor and a voltage sensor, said measurement circuit being connected in series between the switching circuit and the power output; - a communication interface connected to a bidirectional communications bus; - a controller or processor connected to the switching circuit and to the measurement circuit on the one hand, the controller being configured so that, when it receives a voltage and a current measurement from the measurement circuit, it is respectively capable of verifying whether the input voltage is in a predetermined interval and of controlling a current interruption by means of the switching circuit during a certain period, depending on the value of said current measurement, and connected to the communication interface on the other hand, the connection between the communication interface connected to the communications bus and the controller being bidirectional, so that the controller can be remotely programmed; - an addressing bus to which the controller is also connected, giving the possibility of selecting, among several ones, a particular power supply system connected to the general switch.