Siemens 3SE5000-0AF05 Enclosure width 40 mm acc. to EN 50041. Siemens 3SE5000-0AF05 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 3SE51/52 EN 50041, Angular roller lever Metal lever with Plastic roller 22 mm.