Leakage current detection and interruption device for power cord, and power connector and appliance employing the same

A leakage current detection and interruption device, comprising:

• a first and a second power supply line having an input end and an output end;
• a switch module, coupled on the first and second power supply lines between the input and output ends, configured to control an electrical connection between the input and output ends;
• a leakage current detection module, including a leakage current detection line configured to detect a leakage current on at least one of the first and second power supply lines, and to output a leakage current fault signal in response to detecting the leakage current;
• a drive module, configured to drive the switch module to disconnect the electrical connection between the input and output ends in response to either the leakage current fault signal or an open circuit fault signal, wherein the open circuit fault signal is correlated to an open circuit condition of the leakage current detection line, wherein the drive module includes:
• a solenoid;
• a rectifier bridge, coupled between the first and second power supply lines, configured to supply a working current to the solenoid;
• and
• a semiconductor switch element, coupled to the rectifier bridge, configured to change the working current in response to either the leakage current fault signal or the open circuit fault signal, to cause the solenoid to drive the switch module to disconnect the electrical connection between the input and output ends;
• and
• a test module, including a test switch coupled to the leakage current detection module, wherein the leakage current detection module is configured to, in response to the test switch being closed, output the leakage current fault signal to the drive module.