... For the dangerous sites with explosive air mixture: 1 division, 2 division;2. Flammable gas, steam class: ABC;3. Temperatures classification: T1 ... 3, 5, 10, 15, 20, 25, 32, 40, 50, 600.03, 0.05, 0.075, 0.1000.5In Explosion-proofing makerProtectioncategoryCorrosion-proofing gradeInlet's ... CT4IP54W, WF1, WF2G11/4 Φ15~Φ22G3/4 Φ10~Φ15G11/2Φ20~Φ26G1 Φ12~Φ18 Explosion proof lighting/power distribution Box