| 摘要 |
<p>The invention relates to a device (1) for discharging an electrical overvoltage, having an overvoltage discharge unit (10) that has a non-linear current/voltage characteristic at least in sections, wherein a first terminal electrode (16) of the overvoltage discharge unit (10) is connected to a high-voltage terminal (18) of the device (1), and a second terminal electrode (22) of the overvoltage discharge unit (10) is connected to a low-voltage or earth terminal (24) of the device (1), and wherein the overvoltage discharge unit (10) is surrounded, at least in sections, by an insulating body (20), characterised in that the device (1) has a cutting element (40) that is connected to the low-voltage or earth terminal (24) of the device (1) and is arranged close to a high-voltage section of the device (1), particularly close to a high-voltage section of the overvoltage discharge unit (10), which cutting element cuts into the insulating body (20) in the event of said insulating body (20) blowing as a result of an electrical overloading of the device (1), thus enabling an arc to be sparked and stabilised between the high-voltage section and the cutting element (40).</p> |
