Low-voltage protective device

A protective device comprising:

• at least a first outer conductor path from an outer conductor power supply connection of the protective device to an outer conductor load connection of the protective device;
• a neutral conductor path from a neutral conductor connection of the protective device connected to a neutral conductor load connection of the protective device,
• a mechanical bypass switch arranged in the first outer conductor path;
• a first semiconductor circuit arrangement of the protective device connected in parallel to the mechanical bypass switch, the first semiconductor circuit arrangement comprising at least one power semiconductor;
• at least a first voltage-dependent resistor is arranged in parallel with the bypass switch and the first semiconductor circuit arrangement;
• a control and driver unit configured to drive the first semiconductor circuit arrangement with a control voltage;
• a voltage-detection-arrangement configured to detect a voltage drop at the first voltage-dependent resistor;
• and
• at least one temperature-detection-device configured to measure a temperature of the first voltage-dependent-resistor at least before a switch on of the protective device,
• wherein the switch on of the protective device is configured to be carried out based on the voltage drop at the first voltage-dependent resistor and the measured temperature of the first voltage-dependent resistor.