Earth leakage breaker having leakage current limiting function

An earth leakage breaker having a leakage current limiting function, comprising:

• input terminals including a phase voltage line input terminal connected to a phase voltage line of an input-side wire, and a neutral line input terminal connected to a neutral line of the input-side wire;
• output terminals including a phase voltage line output terminal connected to a phase voltage line of an output-side wire, and a neutral line output terminal connected to a neutral line of the output-side wire;
• an earth leakage breaker part having both ends to which the input terminals and the output terminals are respectively connected, and configured to block electrical connection between the input terminals and the output terminals when an overcurrent flows;
• an input-side leakage current limiting part disposed between the input terminals and the earth leakage breaker part to limit an input-side leakage current;
• and
• an output-side leakage current limiting part disposed between the earth leakage breaker part and the output terminals to limit an output-side leakage current,
• wherein the input-side leakage current limiting part has a large conductor area so that the conductor area of the neutral line input terminal is larger than a conductor area of the phase voltage line input terminal, thereby the input-side leakage current is limited by an area difference between the phase voltage line input terminal and the neutral line input terminal having different areas,
• wherein the output-side leakage current limiting part has a large conductor area so that the conductor area of the neutral line output terminal is larger than a conductor area of the phase voltage line output terminal, thereby the output-side leakage current is limited by an area difference between the phase voltage line output terminal and the neutral line output terminal having different areas,
• wherein the input-side leakage current limiting part includes an input-side conductor area expansion plate electrically connected to the neutral line input terminal,
• wherein the phase voltage line input terminal and the neutral line input terminal are disposed on a substantially same plane, and
• wherein the input-side conductor area expansion plate is disposed above and in parallel with the phase voltage line input terminal and the neutral line input terminal, respectively.