The Square D XCKM101H7 is a general duty, compact limit switch from the Osiswitch family, intended for position sensing in industrial control circuits. It carries a 1NO-1NC contact configuration rated 240 VAC at 3 A and 250 VDC at 0.27 A — the DC rating is the one to watch for solenoid or brake loads, where the lower current limit reflects the arc-quenching challenge of DC switching. The rotary lever plunger actuator provides spring-return snap action, meaning the contacts transfer abruptly at a defined operating position, not gradually. This makes it suitable for interlock or limit detection where repeatability of the switching point matters.
Enclosure and environmental fit
The ZAMAK zinc alloy body carries a NEMA 1/2/4/6/6P/12/13 and IP66 enclosure rating. That covers indoor use (NEMA 1/2/12/13) and outdoor or washdown zones (NEMA 4/6/6P, IP66). The 1/2-inch NPT cable gland entry accepts standard conduit or cord grips; screw-clamp terminals inside accept solid or stranded wire without ferrules. Operating temperature range is -13 to 158 °F (-25 to 70 °C). The lower limit is typical for general-purpose limit switches; if the application sees sustained condensation or freezing, verify the seal integrity at the cable entry.