RIB Functional Devices, Inc. PSH300A-LVC See pics for labels and details.

300 VA Power Supply, Three 100 VA Class 2 Outputs, 480/277/240/120 Vac to 24 Vac, Enclosure

This is new, straight out of the box. Never previously opened. It's been sitting in my garage, waiting for me to do something with it. Now your chance!

I found it for $475 from a supply house. Only asking $300.