Low-voltage circuit breaker with an arc-extinguisher chamber and a switching gas damper
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United States of America Patent
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-
Dec 30, 2003
Grant Date -
Sep 11, 2003
app pub date -
May 2, 2003
filing date -
Jul 5, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A low-voltage circuit breaker (1) has an arc-extinguishing chamber (2) and a switching gas damper (4) which consists of two partial bodies (6, 7) that are displaceable in relation to each other. One (6) of the partial bodies (6, 7) is fixed to the circuit-breaker (1), while the other (7) is pre-stressed against the first partial body (6) with an elastic restoring force (spring 12). The switching gases that; are discharged from the arc-extinguishing chamber (2) are contained inside (8) the switching gas damper (4) until the relative displacement of the partial bodies (6, 7) forms a flow outlet through which the switching gases can escape.
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