| 摘要 |
<p>The invention deals with a combined protective device in the field of surge and overcurrent protection within low-voltage networks, which usually includes a two-part bottom with input and output terminals in a single-phase or three-phase application, as well as separate earthing terminals to a standard screw terminal strip, attached by spring clamps for protection and drainage of overcurrents upon lightning and overvoltages including apart from the attached and thermally protected disconnecting circuit with melting solder for the disconnection of active elements for surge and lightning protection, which is new to the recently developed varistors and/or gas arrestor and self-extinguishable spark-gaps, also all sub-assemblies and properties of differential current switches.</p> |
