Len--
Thank you for the reply and information on the  MRC AA370 Railpower 1370.
I am doing a repair of the Santa Ynez carriage museum HO train diorama as an unpaid volunteer. As there is no budget I was hoping someone could inform me of the bi-metal SPST relay part number. Thank you again.
Alan
AA6DW

I have several Transformers #44-6681 with bad bi-metal glass tube type devices that are bad.
Does anyone know the part number (mine are not readable) or source for them?
Thank you for the help.
Alan
AA6DW