| 摘要 |
An electric unit is used for supplying or feeding at least two service lines and for carrying out the three functions 'main disconnection', 'contact voltage(s) protection' and 'excess current(s) protection'. It is suitable for use with domestic equipment such as water heaters, washing machines and dish washers. To overcome the disadvantages of earlier types of unit wherein several lines to one consumer or load needed a separate unit in each line and a common distributor to provide protection, thus resulting in increased costs and large overloads, a main disconnector is provided in the feed line, and a fault-current member, and two or more line protection switches with thermal and magnetic tripping are provided for a line. The fault-current member excites a release or trip unit in the event of a faul-current, and the trip unit simultaneously switches all the line protection switches out of circuit. |
