... single 115V or dual 115/230V primary,rated 50/60 Hz 3.UL approved,Class B 1,Quick connect power transformers ... design applied to small power transformers. The result is a line where, for a given VA rating, size, and weight are reduced ... single 115V or dual 115/230V primary, rated 50/60 Hz. a,UL Recognized File#301240 b,Approved to CSA 22.2 ...