Siemens 3SE5132-0PC03 Enclosure width 40 mm acc. to EN 50041. Siemens 3SE5132-0PC03 is the exact printed commercial reference for a limit or safety switch in the SIRIUS 3SE range. Siemens' official product description is: Position switch Plastic enclosure 40 mm according to EN 50041 Device connection 1x (M20 x 1.5) 2 NO/1 NC slow-action contacts Rounded plunger made of plastic.