The XUB0SKSNM12T is a cylindrical photoelectric sensor from the Telemecanique XUB line, branded under Square D Switches & Sensors — a standard M18-class photoelectric body used for non-contact object detection on conveyor sections, packaging lines, and small-parts presence checks in control panels. Lifecycle stage on this code is listed as current, so the part is still in normal production through the Square D / Telemecanique channel rather than being run out as a last-time-buy.
On a panel that was originally specified around a sibling code such as XUB0BPSNL5, the swap decision comes down to body geometry, sensing mode, and connector keying rather than the brand label alone — confirm the M12 connector pinout and the through-beam versus diffuse-polarised mode match before treating either code as a true drop-in for the other.