... -length rectangular busbar, double-T Universal bus bar frame , , is used for bus bar of 12,15,20,25,3*5/10UL ... - bus bar frame, is used for busbar of 12,2,30 ... *5/10 Bottom groove , suitable for UL - bus bar framePE/E-bus bar frame, is ... used for 12,15,20,25,30*5/10Bus ...