The Square D XCKL106 is a compact general-duty limit switch with a cat whisker actuator — a fine, flexible wire that detects the lightest touch, tripping at 0.13 N. That makes it suited for detecting small parts, film, or labels on a line where a standard roller lever would deflect or damage the target. Rated 240 VAC 3 A and 250 VDC 0.27 A, the SPDT 1NO-1NC snap-action contacts switch cleanly under those loads. The AC rating is for pilot duty or small motor control; the DC rating is low enough that arcing on break is manageable — but don't expect to switch a DC solenoid at the AC current level.
Zamak metal body with a NEMA 1/2/3/4/12 and IP66 enclosure — that means it's dust-tight and protected against hose-down, so it lives on a conveyor frame or packaging machine in a washdown area. Operating temperature spans -13 to 158 °F (-25 to 70 °C), which covers most indoor plant environments. The cat whisker actuator is a spring-return, snap-action type — it resets automatically once the target clears, and the snap action gives a clean make/break without contact chatter.
Compliance and sourcing posture
Listed as current production (active lifecycle). Approvals include UL 508, CSA C22.2, CE, and CCC — so it's accepted in North America, Europe, and China without additional certification work. Also compliant with EN/IEC 60947-5-1 and EN/IEC 60204-1 for machinery safety and control circuit isolation. RoHS compliant; no REACH or Proposition 65 conflict beyond the standard lead warning. The UPC 78590164651 matches the packaging barcode for receiving verification.