| 摘要 |
<p>A sensor device for a residual current circuit breaker has a magnetic core (1) on which portions of respective conductors (3, 4) carrying current to and from a load are wound, and a Hall Effect element (2) located in an air gap in the core for producing an output signal dependent upon the resultant flux intensity induced in the core. The circuit breaker includes a signal processor (16) controlling actuation of a tripping solenoid (11) to open contacts (RC1, RC2) to interrupt supply of electric power to a load (10) when the currents flowing in the respective conductors (3, 4) differ by more than a given amount.</p> |
