The XCKN2118P20C and XCKN2118P20 limit switches are compact, rugged devices designed for precise position sensing in automation and machinery. With a thermoplastic roller lever, a 1 NC plus 1 NO contact arrangement, a snap action mechanism, and an M20 mounting thread, these switches deliver fast, reliable actuation in a small, easy to install package. Key benefits Flexible two contact configuration: 1 normally closed and 1 normally open contact allow versatile wiring for safety interlocks, signaling, and control circuits without needing additional devices. Reliable, fast actuation: snap action ensures quick decision making and repeatable performance across many cycles. Durable roller lever: thermoplastic roller lever provides smooth actuation and wear resistance, reducing maintenance needs in cycling applications. Easy installation: threaded body supports straightforward mounting in standard enclosures and mounting hardware. Key attributes Actuator: thermoplastic roller lever for smooth and consistent actuation. Contacts: 1 normally closed (NC) and 1 normally open (NO) for flexible wiring schemes. Contact action: snap type for fast switching and reliability. Mounting: threaded mounting for compatibility with common installation configurations. Models: XCKN2118P20C and XCKN2118P20 represent these limit switches in the XCKN series. Application: designed for end of travel and position sensing in automation equipment, conveyors, and machinery. What it offers Precise end of travel or position detection in automated lines. Dual contact output to support different control logics or safety circuits from a single device. Robust lever mechanism suited for repetitive cycling in industrial environments. Simple integration with standard control systems and PLC inputs through the 1 NC + 1 NO configuration. Typical use cases Endoftravel detection on a conveyor system to stop or reverse a belt and trigger downstream processes. Position sensing for tooling or workpieces on CNC machines or robotic arms, enabling accurate stop points and cycle control. Safety interlock or signaling on access doors or guards, using the NC contact to monitor closed positions and the NO contact to indicate an open state. Compatibility and integration notes Suitable for integration with standard automation control circuits and PLC inputs that support NC and NO configurations. The mounting thread enables straightforward installation in equipment designed for switch bodies. The dual contact arrangement provides wiring flexibility for singledevice signaling or safety logic without extra components. Overview The XCKN2118P20C XCKN2118P20 limit switches deliver reliable position sensing with a thermoplastic roller lever, a 1 NC + 1 NO contact arrangement, snap action for rapid switching, and mounting. They are suited for endoftravel sensing, machine safeguarding, and general automation signaling where compact, durable limit switches are needed.