Siemens 3SE5112-0CH80 Enclosure width 40 mm acc. to EN 50041. Siemens 3SE5112-0CH80 is the exact printed commercial reference for a limit or safety switch in the SIRIUS 3SE range. Siemens' official product description is: Position switch Metal enclosure 40 mm according to EN 50041 Device connection 1x (M20 x 1.5), 1 NO/1 NC quick action contacts, Rotary actuator right/left adjustable, rod lever made of aluminum 200 mm long.