Importance

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Abstract

Embodiments of the present disclosure provides a solid state circuit breaker, comprising: a first switch; a second switch, connected in series with the first switch in a circuit to be protected; an operation switch, connected to the second switch, wherein the second switch is closed in a case that the operation switch is in a closed position, and is opened in a case that the operation switch is in an opened position; a micro switch, connected to the operation switch, and cable of being driven to a predetermined opened position by the operation switch during the process of the operation switch being switched from the closed position to the opened position; a position detection circuit, connected to the micro switch, capable of generating an opening feedback signal in a case that the micro switch is driven to a predetermined opened position; a control unit, connected to the position detection circuit to receive an opening feedback signal, capable of generating a predetermined opening signal based on the opening feedback signal; a first on-off circuit, connected to a first output terminal of the control unit to receive a predetermined opening signal, an output terminal of the first on-off circuit being connected to a control terminal of the first switch to open the first switch under the control of a predetermined opening signal.

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First Claim