Siemens 3SE5000-0AE03 Enclosure width 40 mm acc. to EN 50041. Siemens 3SE5000-0AE03 is the exact printed commercial reference for a limit or safety switch in the SIRIUS 3SE range. Siemens' official product description is: Actuator head for position switch 3SE51 Roller lever Stainless steel lever and Plastic roller 22 mm.