Siemens 3SE5000-0AA04 Enclosure width 40 mm acc. to EN 50041. Siemens 3SE5000-0AA04 is the exact printed commercial reference for a limit or safety switch in the SIRIUS 3SE range. Siemens' official product description is: twist lever for position switch 3SE51 metal lever 27 mm long, Step 9 mm with 2 plastic rollers 19 mm.