... G3/4" 4. Pole: single pole high quality SW-10 Series Explosion Proof Light Switch (IIB, DIP)•Application1. Design for Explosive atmosphere Zone ... coated surface after shot blasted.2. Built-in combination switch with stable property.3. Special designed water resistance ... 2,GB3836.3,IEC60079-0,IEC60079-1,IEC60079-72.Explosion protectionExed IIBT6, DIPA20TA,T63.Rated voltageAC220V4.Polesingle pole5.Rated ...