Protection standards are liable to DIN Norms and always start with IP (International Protection or Ingress Protection). The first digit indicates the level of protection that the enclosure provides against access to hazardous parts and the ingress of solid foreign objects whereby “6” indicates “dust tight”. The second digit indicates the level of protection that the enclosure provides against harmful ingress of water whereby the “7” indicates “protected against ingress of water” (max. 30min at 1m below the surface).