YB2 Explosion Proof Motor,approved CE,CCC,ISO certification !insulation Class ... 12kW~315kW Product Description General Descriptions: YB2 YB2 Series Explosion-Proof Motor used on coal mine where methane and coal ... dust may be presend EXdl and dangerous explosion areas EXdllBT4 in the plate with the class IIB ... dust may be presend(Ex d I) and dangerous explosion areas(EX d II AT4, d II BT4) in ...