Ah, I just love DIN rail stuff....was just getting into it the last half of my 31 year electrical / traffic signal career when I found the PLC's, relay bases, fuse blocks, circuit breakers and terminal blocks for DIN rail. From '73 to '90 I was using screws and having to drill and tap aluminum panels or screw to high grade plywood to mount the non-DIN stuff. DIN is just so neat and the snap-on raceway ducts (Panduct) really dress it up. 
