Joe ,or Greg, I finally picked up two Crouzet #GN 84134011 relays/like this one,
http://www.galco.com/scripts/cgiip.exe/wa/wcat/itemdtl.r?listtype=Catalog&pnum=84134011-CROU


there is no schematic but it looks like the switched load connects to terminals 1/L1 and 2/T1 and the control to 3/A1 and 4/A2...
I did not see any heatsinks for this relay in the Newark catalog , but it seems I need them since one of these will be pulling 21 A...so I looked at Joes' link and think I can figure out which one to use, but I still can't find them anywhere

Tom