1 and Zone 2 dangerous places. 
 Ⅱ A, Ⅱ B IIC explosive gas environment. 
 Note: The requirements specified class IIC. 
 Features 
 1, die cast aluminum alloy shell, the surface high-pressure electrostatic spray; 
 2, the interior switch for the electrical circuit current less than 60A, played the role of the control circuit; 
 3, conventional three-pole of this product may be common to two pole switch, then the case for the quadrupole to be changed accordingly; 
 4, conduit or cable wiring.