62 Use in Hazardous Environments WAGO-I/O-SYSTEM 750750-652 Serial Interface RS-232 / RS-485ManualVersion 1.4.0Table 45: Description of Marking Example for Approved I/O Modules According to ATEX andIECExPrinting on Text DescriptionTÜV 07 ATEX 554086 XIECEx TUN 09.0001 XApproving authority and certificate numbersDustII Equipment group: All except mining3D Category 3 (Zone 22)Ex Explosion protection marktc Dc Type of protection and equipment protectionlevel (EPL):protection by enclosureIIIC Explosion group of dustT 135°C Max. surface temperature of the enclosure(without a dust layer)MiningI Equipment group: MiningM2 Category: High level of protectionEx Explosion protection markd Mb Type of protection and equipment protectionlevel (EPL): Flameproof enclosureI Explosion group for electrical equipment formines susceptible to firedampGasesII Equipment group: All except mining3G Category 3 (Zone 2)Ex Explosion protection marknA Gc Type of protection and equipment protectionlevel (EPL): Non-sparking equipmentnC Gc Type of protection and equipment protectionlevel (EPL): Sparking apparatus with protectedcontacts. A device which is so constructed thatthe external atmosphere cannot gain access to theinteriorIIC Explosion group of gas and vapoursT4 Temperature class: Max. surface temperature135°C
