CIRCUIT BREAKER DEVICE AND METHOD
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United States of America Patent
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Issued Date -
Feb 8, 2024
app pub date -
Dec 21, 2021
filing date -
Dec 21, 2020
priority date (Note) -
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Abstract
A circuit breaker device has a mechanical break contact unit connected in series with an electronic interruption unit. The mechanical break contact unit is switched by breaking contacts to prevent current from flowing or by closing the contacts to allow current to flow in the low-voltage circuit. The electronic interruption unit is switched by semiconductor-based switching elements into a high-impedance state of the switching elements to prevent current from flowing or into a low-impedance state of the switching elements to allow current to flow in the low-voltage circuit. An amplitude of the current in the low-voltage circuit is ascertained such that analog momentary current values are provided which are compared with a current threshold value by an analog comparator, and if the threshold value is exceeded, prevention of current flowing in the low-voltage circuit is initiated, in particular by switching the electronic interruption unit into the high-impedance state.
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