The Square D XCKL10011H7 is a compact limit switch from the Telemecanique line, built for general/heavy-duty position sensing in industrial environments. It carries a SPDT 1NO-1NC contact block rated 240 VAC at 3 Ampere and 250 VDC at 0.27 Ampere, with a spring-return snap-action mechanism. The Zamak metal body and NEMA 1/2/3/4/12 (IP66) enclosure make it suitable for washdown or dusty locations. Actuation is via a thermoplastic roller lever, and the 1/2 inch NPT conduit entry simplifies wiring into standard fittings.
The 3 A at 240 VAC contact rating is for general-purpose pilot duty; the 0.27 A at 250 VDC rating covers DC control circuits, which is typical for limit switches in relay logic or PLC input circuits. The 14.2 oz-inch operating force is moderate — it will not trip from vibration but requires a positive cam or lever strike. The -13 to 158 °F operating range covers most indoor and outdoor enclosures. The NEMA 4/IP66 seal means it handles hose-down cleaning, so it fits food or chemical processing areas where washdown is routine.