Siemens 3SE5000-0AD03 Enclosure width 31 mm acc. to EN 50047. Siemens 3SE5000-0AD03 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 Roller plunger, Form C, with Plastic roller 10 mm according to EN 50047.