Current adjustable miniature circuit breaker

The utility model relates to a miniature leakage circuit breaker with adjustable leakage action current grading, which comprises a current transformer, a gear switch with three moving contacts, a leakage action current grading adjustable circuit with a first resistance, a second resistance and a third resistance. The first resistance, the second resistance and the third resistance are connected in series in turn, and one end of the first resistance is connected with an output end of the current transformer, The other end of the first resistance is connected with one end of the second resistance, the other end of the second resistance is connected with one end of the third resistance, the other end of the third resistance corresponds to the third moving contact of the gear switch, the first contact of the first resistance and the second resistance corresponds to the first moving contact of the gear switch, and the second contact of the second resistance and the third resistance corresponds to the second moving contact of the gear switch, The static contact of the gear switch is connected with the other output terminal of the current transformer. Through the conversion of the moving contact of the gear switch, the leakage action current value of the micro leakage circuit breaker can be adjusted in real time and level by level to adapt to different power consumption environments.

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