| 摘要 |
<p num="1">An electronic circuit breaker includes controllable contacts 812) adapted to connect a power source (10) to at least (11), and a microcontroller (14) for monitoring the flow of power to the load (11), detecting different types of fault conditions and automatically opening the contacts (12) in response to a fault. A primary power supply (15, 16) of the breaker receives power from the line source (10) when the contacts (12) are closed, and supplies power to the microcontroller (12). Fault indicators (19) in the microcontroller indicate the type of fault that caused the contacts (12) to open. A secondary power supply (10, 18, R1, 21, D1) provides power to the microcontroller (12) when the contacts (12) are open and a switch (18) is closed.
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