This document is about the Nemko ATEX certificate and describes three new frequency converters, a new grounding device, and a new IP code. The frequency converters can be used with ABB ACS 800, ABB ACS 550, and ABB ACS 350 motors. For frame size 112-180, the use of IP 56 or IP 66 protection class is allowed if the design for IP65 according to the assembly drawings is used. Additionally, a new alternative external grounding device is added. The document provides technical descriptions and drawings.