Circuit board arc chamber filter assembly to filter arc products uses silicone gaskets to seal filter body to filter housing under forces formed on filter

摘要

Each of the filter elements (18) is separately mounted in a silicone gasket (20) in an associated recess of the housing or cup (12) to provide a composite filter, so that the effective electrical resistance is increased in the conductive path as the path is broken by the nonconductive material of the cups and of the frame portions (22). This reduces the amount of leakage current during short circuiting. Independent claims are included for a molded coarse hole diffuser and for a method of filtering high energy arcing in a circuit breaker.