The Isolating Enclosures are classified into five groups: * KS-, KL-, CS-, CL-Enclosures (IP66/67): With cover coupling with or without cover interlock, strong durable plastic and increased wiring space. * ST1-Enclosures (IP54): With abundant wiring space and entries with thread. * PN-, PF-Enclosures (IP42, IP65): Small dimensions and entries with thread. * PFA - PFF-Enclosures (IP54, IP65): For KG-switches only; entries with thread, with and w/o cover coupling and strongest durable plastic. * PK-Enclosures (IP44): Enclosure with Lateral drive and entries with and w/o thread