Explosion-proof 4-Pole switch 1.Ex mark:Ex 2GD Ex tD A21 2.Degree of protection:IP66 3.Intended use:zone1 and 2;zone21 and 22 Explosion-proof 2-Pole switch feature:1.Ex mark:Ex 2GD Ex e2 EX tD A21 2.Degree of protection:IP 663.Intended use:zone1 and 2;zone21 and 224.Temperature: -40---55 5.Material:polyamide6.Meet the standard :IEC60079 IEC61241 EN60079 EN612417.Conformity to:CE 0575 Explosion- ...