The Square D / Telemecanique XCKJ50511 is a heavy-duty limit switch in a fixed-body format, built around a Zamak metal enclosure rated NEMA 1/2/3/4/12 and IP66. That means it handles indoor washdown, outdoor rain, and the dust and oil mist common on a packaging or material-handling line — no extra cover needed. The thermoplastic roller lever actuator is the standard cam-follower style you see on conveyor diverters, pallet stops, and machine guard positions.
What the contact ratings actually mean for your circuit
The XCKJ50511 is rated 240 VAC at 3 amperes and 250 VDC at 0.27 ampere. The switch meets UL 508 (industrial control equipment), CSA C22.2, CE, and CCC — so it is accepted for North American panels and for machinery exported to Europe and China. It also references EN/IEC 60204-1, the machinery safety standard, which matters when the limit switch is part of a guard interlock circuit.
The fixed body measures 1.57 in wide by 1.73 in deep by 3.03 in high. Connection is through a 1/2 inch NPT conduit entry. Operating temperature range is -13 to 158 °F.
