PDF document of 147 KB filed as a schematic under the name 60EPU04. No device, manufacturer or board number is given. The code looks like a specific part number in a power semiconductor range, with the trailing digits likely marking a grade within the series. Use it as a reference for terminal layout and limits while checking or swapping the part. Any PDF viewer will open it. Verify that the code on the physical component matches exactly before ordering a substitute.
The button opens the matching file on RM Schematics, or a source page if it is not catalogued there yet. The original attachment is from @cyberlanelectonik. Enginerys does not host this file.
How to open a .pdf file
The standard format for schematics, block diagrams, power-sequence charts and service manuals.