{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"XCKN3903F12S66","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"XCKN3903F12S66","canonicalUrl":"https://aoctrl.com/schneider/XCKN3903F12S66","factsUrl":"https://aoctrl.com/api/mcp/products/XCKN3903F12S66","rawCanonicalId":null},"summary":{"shortDescription":"Telemecanique Osiswitch XCKN compact limit switch, model XCKN3903F12S66, PF 1/2 cable entry, 240 VAC 3 A / 250 VDC 0.1 A contacts, IP65 plastic enclosure, UL/CSA approved.","salesMarkdown":"The Telemecanique XCKN3903F12S66 is a compact plastic-body limit switch from the Osiswitch family, rated for 240 VAC at 3 A and 250 VDC at 0.1 A. That 0.1 A DC rating is the one to watch — it limits the switch to low-current DC signal circuits, not power switching on DC bus lines. PF 1/2 cable entry accepts standard metric or PG gland sizes common in European panels. The switch is designed to EN/IEC 60947-5-1 (control circuit devices) and EN/IEC 60204-1 (machinery safety), so it fits into CE-marked machine builds.","metaTitle":"Telemecanique XCKN3903F12S66 Limit Switch, Compact, IP65, 24","metaDescription":"Telemecanique XCKN3903F12S66 limit switch, compact plastic body, IP65, UL/CSA, 240VAC 3A / 250VDC 0.1A contacts. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Limit Switches"],"specifications":{"UPC":"78590159424","Type":"COMPACT","Model":"XCKN","title":"XCKN3903F12S66","Approval":"UL, CSA","Category":"Medium Duty Limit Switches","Enclosure":"IP65","Brand Name":"Osiswitch[R]","description":"SQUARE D XCKN3903F12S66: LIMIT SWITCH","Sub-Category":"General/Heavy Duty Limit Switch","UPC 12 Digit":"389119051340","Body Material":"PLASTIC","Contact Rating":"240 VAC 3 AMPERE, 250 VDC 0.1 AMPERE","Connection Type":"PF 1/2 CABLE ENTRY","lifecycle_stage":"current","Manufacturer Brand":"Square D Co.","Product Description":"Telemecanique XCKN3903F12S66 Limit Switch","Operating Temperature":"-32 TO 21 DEG F","Additional Information":"APPLICABLE STANDARD EN/IEC 60204-1, EN/IEC 60947-5-1","Full Technical Description":"Compact Type; PF 1/2 Cable Entry Connection Type; 240 VAC 3 Ampere, 250 VDC 0.1 Ampere Contact Rating; UL, CSA Approval; IP65 Enclosure; Plastic Body Material; -32 to 21 Deg F Operating Temperature; OSISWITCH[R] Brand; Applicable Standard En/Iec 60204-1, En/Iec 60947-5-1; XCKN Model"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$138.09","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/5351e428632880adcae26ba45d82f169.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What are the key electrical ratings for XCKN3903F12S66?","answer":"Contacts are rated 240 VAC at 3 A and 250 VDC at 0.1 A. The DC rating is the limiting factor — use it for signal-level DC loads only, not for switching DC motors or solenoids."},{"question":"What approvals does this limit switch carry?","answer":"UL and CSA approvals are listed, covering North American installation requirements."},{"question":"What is the enclosure protection class?","answer":"IP65, meaning dust-tight and protected against water jets. Suitable for washdown environments but not for submersion."},{"question":"What standards does the XCKN3903F12S66 comply with?","answer":"It complies with EN/IEC 60204-1 (machinery safety) and EN/IEC 60947-5-1 (control circuit devices), supporting CE-marked machine builds."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/XCKN3903F12S66","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/schneider/XCKN3903F12S66 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}