Medium Duty — what that means for the line
The XCKD2128M12 is classified as a Medium Duty limit switch, which places it in the standard industrial range — not the light-duty snap-action used in packaging turntables, nor the heavy-duty foundry-rated switch with metal-bodied enclosures. Medium Duty covers most conveyor, machine-tool door interlock, and material-handling positions where the actuation force and overtravel fall within the XCKD family's mechanical travel envelope.
Sourcing and cross-reference
Branded under Schneider Electric's Square D Sensors & Safety line, the XCKD2128M12 carries the full Telemecanique XCKD series mechanical and electrical ratings. The UPC 12-digit code 389110198525 is the standard inventory identifier used in MRO and procurement systems for this specific switch variant.