Schneider Electric Telemecanique XCK-M121 Limit Switch

The Schneider Electric Telemecanique XC Standard XCKM121 limit switch is a heavy-duty electromechanical position switch featuring a thermoplastic roller lever plunger and snap-action contacts for reliable end-of-travel sensing. Part of the XC Standard XCKM family, it uses a fixed body with a plunger head in Zamak housing, a spring-return thermoplastic roller lever actuator, linear head movement, and a 1 NC + 1 NO snap-action contact configuration. Rated at 3 A AC-15 at 240 V AC and 250 V DC (DC-13), it employs screw-clamp terminals, 3 × Pg 11 cable entries, and is actuated by a 30° cam, with IP66 protection and CCC, CSA, and UL certifications. Common applications include conveyors, packaging machinery, machine tools, automated production equipment, and material handling systems, and typical replacements include XCKM115, XCKM145, and Schneider Electric XCKM121.