Leakage protection devices, electrical connection equipment and electrical appliances

A leakage protection device, comprising:

• a switch module, coupled between an input end and an output end of current-carrying lines and configured to control a power connection between the input end and the output end;
• a leakage detection module, configured to detect a leakage current signal on the current-carrying lines and generate a leakage fault signal when the leakage current signal is detected or when the leakage current signal exceeds a preset threshold;
• an over-temperature protection module, configured to detect a temperature of a specific element and/or at a specific position and generate an over-temperature fault signal when the temperature of the specific element and/or at the specific position exceeds a preset threshold;
• and
• a driving module, coupled to the switch module, the driving module including:
• at least one first semiconductor element, coupled to the leakage detection module and configured to receive the leakage fault signal and change its switch state in response to the leakage fault signal, wherein the switch module is configured to disconnect the power connection in response to the changed switch state of the at least one first semiconductor element;
• and
• at least one second semiconductor element, coupled to the over-temperature protection module and configured to receive the over-temperature fault signal and change its switch state in response to the over-temperature fault signal, wherein the switch module is configured to disconnect the power connection in response to the changed switch state of the at least one second semiconductor element.

A leakage protection device, comprising:

• a switch module, coupled between an input end and an output end of current-carrying lines and configured to control the power connection between the input end and the output end;
• a leakage detection module, configured to detect the leakage current signal on the current-carrying lines and generate a leakage fault signal when the leakage current signal is detected or when the leakage current signal exceeds a preset threshold;
• an over-temperature protection module, configured to detect a temperature of a specific component and/or at a specific position and generate an over-temperature fault signal when the temperature of the specific component and/or at the specific position exceeds a preset threshold;
• an over-temperature self-test module, coupled to the over-temperature protection module and configured to detect whether the over-temperature protection module has failed and generate an over-temperature self-test fault signal when the over-temperature protection module has failed;
• and
• a driving module, coupled to the switch module, the leakage detection module, the over-temperature protection module and the over-temperature self-test module, and configured to receive the leakage fault signal, the over-temperature fault signal and the over-temperature self-test fault signal, and to drive the switch module to disconnect the power connection in response to one or more of the leakage fault signal, the over-temperature fault signal and the over-temperature self-test fault signal.