Telemecanique Sensors - XCKN2127P20The Schneider Electric Limit switches are used in all automated installations and also in a wide variety of applications, due to the numerous advantages inherent to their technology . All limit switches incorporating either a slow break contact block or a snap action NC + NO (form Zb), NC + NO + NO, NC + NC + NO, NC + NC + NO + NO contact block are positive opening operation, in complete conformity with standard IEC 60947 5 1 Appendix K. Hohe