ARC EXTINGUISHING DEVICE OF DC CIRCUIT BREAKER
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United States of America Patent
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Issued Date -
Oct 5, 2023
app pub date -
Jun 29, 2022
filing date -
Jun 29, 2022
priority date (Note) -
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status (Latency Note)
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Abstract
An arc extinguishing device of a DC circuit breaker is proposed. The arc extinguishing device is provided with electromagnets installed on opposite sides of an arc extinguishing chamber, so as to increase arc resistance, thereby quickly extinguishing an arc. The arc extinguishing device includes: an arc extinguishing chamber installed above contact terminals and provided with an internal space formed open up and down; a plurality of grids installed side by side in the internal space of the arc extinguishing chamber; a cover installed on an upper part of the arc extinguishing chamber, and including a filter for filtering out impurities remaining in an arc which is extinguished in the arc extinguishing chamber; and electromagnets installed on the one side and the other side of the internal space of the arc extinguishing chamber.
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