Part identity and deployment
The Square D Telemecanique XCKT2106G11 is a general/heavy duty limit switch rated for 240 Vac. This is the class of switch you find on conveyor transfer stations, machine guards, and valve position feedback where the contact block needs to survive repeated mechanical actuation in a panel or on-machine enclosure.
It means the contacts are designed to break inductive loads at that voltage without excessive arcing or contact welding — a standard requirement for interlocking a motor starter or PLC input module.