HAVE MAYBE 300 OF THESE TRANSFORMERS, CONTACT ME FOR A BULK DEAL. I had someone share the following with me concerning this transformer: Hi Mike, Just though you'd like to know that this is a "control transformer". It is used in industrial machinery to supply single phase 120V power from a "Wye" connected 3 phase transformer or power line. 4 PIECE LOT :MICRON TRANSFORMER (ONAN 315-6040) 415/380/347-120V NOS NEW OLD STOCK. you are bidding on 4 transformers Micron Industries Industrial Control Transformer Stone Park, IL UL listed 702X .010 KVA 50/60 HZ VOLTS: PRI. 347/380/415 CAT # BX010R015-ON-XX Winner pays only $9.95 shipping and handling anywhere in USA. Please look at my other auctions and treat yourself to a trip through my store then put me on YOUR FAVORITE SELLERS list. I am not an expert concerning much of what I sell but I do have a certain amount of "resourcefulness". Please send part numbers when inquiring about certain parts. Thank you. Mike ... Powered by Turbo Lister The free listing tool. List your items fast and easy and manage your active items. 11-3-21