额定电     主回路额                           主回路总          支路额                            管螺纹 Thread         电缆外径(mm)          防护等级        
      型号            压(V)        定电流(A)     支路数       开关数(台)        电流(A)      防爆标志      进线       出线          进线        出线          Protection
     Type           Rated       Rated current   Branch       Switch No.         Branch         Ex-mark        Inlet        Outlet         Inlet       Outlet 
                         voltage     of main circuit  number       of main circuit   current  CBP51-4                                                      4                                           1                          
  CBP51-6                                                      6                                           3
  CBP51-8          380                63                   8