Leakage current detection and interruption device and related electrical connectors and electrical appliances

A leakage current detection and interruption device, comprising:

• a plurality of current carrying lines having an input end and an output end;
• a switch module, coupled on the plurality of current carrying lines between the input end and the output end, configured to connect or disconnect an electrical connection between the input end and the output end;
• a leakage current detection module, configured to detect a leakage current signal on the plurality of current carrying lines and to generate a leakage fault signal in response to detecting the leakage current signal;
• a drive module, coupled to the switch module and the leakage current detection module, configured to receive the leakage fault signal, and to drive the switch module to disconnect the electrical connection in response to the leakage fault signal;
• a self-test module, coupled to the leakage current detection module and the drive module, configured to periodically generate a simulated leakage current signal to detect a malfunction in the leakage current detection module and/or the drive module, and to generate a self-test fault signal in response to detecting the malfunction of the leakage current detection module and/or the drive module;
• and
• an alarm module, coupled to the self-test module, configured to receive the self-test fault signal, and to generate an alarm signal in response to the leakage fault signal and/or the self-test fault signal.