The Square D XCMD2101C12 is a severe-duty limit switch from the Osiswitch line, built for environments where ingress and mechanical abuse are the real concerns. It carries NEMA 1/2/4/4X/6/12/13 and IP66, IP67, IP68 enclosure ratings — that covers washdown, submersion, and corrosive atmospheres without a secondary cover. Contact rating is 240 VAC at 1.5 A and 250 VDC at 0.1 A, with a 1NO-1NC snap-action configuration. That DC rating is the one to watch — at 0.1 A it's sized for signal-level switching, not power interruption. The M12 5-pin male connector keeps wiring consistent with modern sensor cabling; no pigtail to splice. Body is ZAMAK zinc alloy, rotary head without lever arm. Operating force is 35 oz-in, pretravel 3.1 mm, differential travel 1.4 mm. Temperature range -13 to 158 °F.
Applicable standards include EN/IEC 60204-1 and EN/IEC 60947-5-1, with UL and CSA approval. That covers machinery safety and control circuit isolation requirements for most industrial panels.