| 摘要 |
The current path (13) between the input (11) and output (12) terminals includes movable contacts (14) driven by a locking system. An electromagnetic sensor and temperature sensor are connected to the switching lock. The current path passes through a Hall sensor (31a,b) which measures the current. The Hall sensor is connected to a control and evaluation circuit (30) with a differential amplifier (30a), an analog/digital converter (30b), a digital filter (30c) and a serial interface circuit (30d). |
