487 Parker Hannifin Corporation Fluid Control Division Europe General Catalogue FCDE/0110/UK/V2.0 Fluid Control Solutions Europe General Catalogue FCSE/0112/UK V2.2 07/2022 ELECTRICAL APPARATUS FOR EXPLOSIVE GAS ATMOSPHERES EQUIPMENT GROUP II ELECTRICAL EQUIPMENT FOR USE IN AREAS WITH COMBUSTIBLE DUST - EQUIPMENT GROUP III EXAMPLES OF MARKING Ex db IIC T5 Gb Ex tb IIIC T95°C Db Zone Equipment Protection Level (EPL) 20 Da 21 Db and Da 22 Dc, Db and Da Equipment Groups (Dust) IIA Fibres IIB Non-conductive dust IIC Conductive dust Equipment Groups (Gas) IIA Aceton, ethane, benzene, petrol, butane, propane, methane IIB Ethylene, town gas IIC Hydrogen, acetylene Zone Equipment Protection Level (EPL) 0 Ga 1 Gb and Ga 2 Gc, Gb and Ga Temperature Class Ignition Temperature of Gas or Vapour Maximum admissible surface temperature for permanently hot surfaces T1 > 450°C 440°C T2 > 300°C 290°C T3 > 200°C 195°C T4 > 135°C 130°C T5 > 100°C 95°C T6 > 85°C 80°C Surface Temperature Max. Protection Mode Protection Mode
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