| 摘要 |
<p>In order to prevent an electrical tool, for example a hand-drill, a mowing machine or similar, from starting up again by itself after an interruption in the power supply or a line fault, owing to the fact that it has not been switched off, the control unit is designed in the form of a switch-box that can be added, in which the usual motor (protection) switch (1) can be incorporated as a module with the electromagnetic triggering component (4) of a circuit arrangement for controlling the mains voltage, so as to be able, with the aid of a locking mechanism (11-17), to switch on or off the relevant electrical appliance by hand by means of two operating buttons (7, 8) arranged on the front, as well as to immediately protect the appliance electrically against overloading and erroneous operation after an interruption in the mains supply.</p> |
