Siemens 3SE5114-0CA00-1AC5 Enclosure width 40 mm acc. to EN 50041. Siemens 3SE5114-0CA00-1AC5 is the exact printed commercial reference for a limit or safety switch in the SIRIUS 3SE range. Siemens' official product description is: basic switch for position switch 3SE51 metal enclosure 40 mm according to EN 50041 1 NO/1 NC quick action contacts with M12 plug, 5-pole, fixed pin assignment: Pin1=21, Pin2=22 Pin3=13, Pin4=14, Pin5=PE without actuator head.