| 摘要 |
Device for surge guards of user terminals (1) of electricity networks that contains a varistor (2), whose first and second terminals (21, 22) are connected with a connecting cable (51, 52) serving to connect to the live contact (L) or neutral contact (N) of the user terminal, whereas one of the outlets (21, 22) is connected to a fixed contact (31) of a heat disconnecting electric switch, whereas the fixed contact (31) is a low-fusing soldered joint linked to a disconnecting contact (32) subject to the action of resistance force (F) applied to the disconnecting contact (32) in the direction from the fixed contact (31). The disconnecting contact (32) of the heat disconnecting electric switch is a wire carrier (34) connected with a second connecting cable (52) and at the same time it is interconnected with the resisting device (35) mounted in the construction of the equipment and producing the inductive resistance force (F).<IMAGE> |
