The Square D / Telemecanique XCKJ50513 is a heavy-duty, non-plug-in limit switch from the OsiSwitch line, built for position sensing on industrial machinery where the environment is wet, dusty, or sees washdown. The ZAMAK zinc-alloy body and NEMA 1/2/4/12 / IP66 enclosure mean this switch survives on conveyor lines, packaging machines, and material-handling equipment where a standard limit switch would corrode or let moisture in. The rotary head with a steel roller lever gives it a 23-degree pretravel and 90-degree total travel, with 11 degrees of differential travel before the contacts reset — figures that matter when you are setting up cam-actuated position detection on a transfer station or a gate. The contact block is SPDT slow make/break, rated at 240 VAC 10 A and 250 VDC 0.27 A. That DC rating is the real constraint for most control circuits — if you are switching a DC solenoid or a PLC input at 24 VDC, verify the inrush and inductive load against the 0.27 A limit. The AC-15 or general-use inductive load curve for this switch is not separately stated, so the 10 A AC rating should be treated as a resistive or general-use figure; for motor-starter pilot duty, derate accordingly. The switch complies with EN/IEC 60204-1 (machine safety) and EN/IEC 60947-5-1 (control circuit devices), so it meets the standards a panel builder expects for a safety-related position interlock.
UL and CSA approvals are listed, covering North American panel inspections. The Proposition 65 warning (DINP/DIDP) is a California labeling requirement and does not affect the part's functional compliance with UL 508 or CSA C22.2. For European CE marking, the EN/IEC standards cited cover the machinery directive, but the switch itself carries no explicit CE mark in the spec — verify with your compliance team if the end machine requires a CE declaration from the component level.
Wiring and installation constraints
Connection is via a PG13.5 cable gland with screw-clamp terminals inside. The screw-clamp terminal is a field-proven, vibration-resistant termination — no special tooling beyond a screwdriver. The non-plug-in body means the switch is hardwired; there is no quick-disconnect base for swap-out without rewiring. If the panel requires rapid replacement without disturbing the conduit, consider the plug-in variant of this OsiSwitch family. The IP66 rating means the switch withstands high-pressure water jets — suitable for washdown zones in food processing or automotive paint lines. The NEMA 4/12 rating covers indoor use against dust, falling dirt, and non-corrosive liquids.