Siemens AG Snap Action, Limit Switches 3SE51220BE01

The Snap Action Limit Switch 3473-3SE51220BE01-ND features a metal enclosure with a width of 56 mm and is designed for mechanical position switching. It includes one normally open (NO) and one normally closed (NC) slow-action contact, operated by a roller lever with a metal lever and plastic roller. The switch is suitable for safety applications, offering positive opening functionality. This product has an insulation voltage rating of 400 V and a surge voltage resistance of 6 kV. It is rated for IP66/IP67 protection, making it suitable for harsh environments. The mechanical service life is rated at approximately 15 million switching cycles, while the electrical endurance at AC-15 is about 100,000 cycles at 230 V. The switch can operate at a frequency of 50 to 60 Hz and has a thermal current rating of 10 A. It supports various conductor cross-sections for electrical connections and is mountable in any position using screw fixing. The product is compliant with safety standards and has received relevant certifications for functional safety and machinery safety.