Telemecanique XCKD21H0N12 Limit Switch, Medium Duty, Square

The Telemecanique XCKD21H0N12 is a Medium Duty Limit Switch from Square D Switches & Sensors, the brand behind the Telemecanique limit switch line. It is a mechanically actuated position sensor used to detect the presence, absence, or travel limits of moving machine parts — think conveyor belt edges, robot arm endpoints, or gate positions on a packaging line. The medium-duty class means it is built for industrial environments where the actuation force and cycle rates fall below heavy-duty foundry or mining applications but above light-duty panel indicators. Expect a robust metal or reinforced thermoplastic housing with a roller-plunger or lever actuator (the exact head style is confirmed by the full order code).