{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"D4SLN4NFADN","brand":"Omron","brandSlug":"omron","productSlug":"D4SLN4NFADN","canonicalUrl":"https://aoctrl.com/omron/D4SLN4NFADN","factsUrl":"https://aoctrl.com/api/mcp/products/D4SLN4NFADN","rawCanonicalId":null},"summary":{"shortDescription":"Omron D4SL series guard lock safety-door switch, D4SLN4NFADN, 2NO / 4NC contacts, IP67, connector termination, 39 x 39 x 155 mm.","salesMarkdown":"The Omron D4SLN4NFADN is a guard-locking safety-door switch from the D4SL series, built for interlocking access on machinery where the guard must stay locked until conditions are safe. It uses a key-actuated head with four direction options, so you can mount it top, bottom, left, or right depending on the door swing. Contact arrangement is 2NO + 4NC — the normally-open pair drives the machine control circuit, the four normally-closed contacts feed the safety chain. That's a lot of NC contacts for one switch; it gives you room to wire multiple safety relays or a dual-channel safety PLC input without adding auxiliary blocks. IP67 rating means the switch body and head handle washdown and dust — out here in the grease, that's what keeps a guard switch from failing when the hose hits it. Connector termination speeds replacement; no need to re-terminate individual wires inside the panel. ## Switching ratings and life Switching capacity is 1.5 A at 120 V AC and 220 mA at 125 V DC. That's plenty for pilot-duty control circuits — think safety relay coils, PLC inputs, or contactor auxiliaries. Don't plan on switching motor loads directly; this is a signal-level interface. Electrical life is rated at 150,000 cycles, mechanical life at 1 million cycles. The gap tells you the contacts wear before the mechanism does. In a high-cycle application — say a robot cell door opening every 30 seconds — the electrical life will be the limit, not the lock mechanism.","metaTitle":"Omron D4SLN4NFADN Guard Lock Safety-Door Switch, 2NO/4NC, IP","metaDescription":"Omron D4SLN4NFADN guard lock safety-door switch with 2NO/4NC contacts, IP67, connector termination. Rated 1.5 A AC / 220 mA DC. Mature lifecycle, sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Limit Switches"],"specifications":{"Depth":"39 mm","Width":"39 mm","title":"D4SLN4NFADN","Height":"155 mm","Series":"D4SL","Lock Type":"Guard Locking","Switch Type":"Safety-Door Switch","description":"Guard Lock Safety-Door Switch, 2NO / 4NC, IP67, Connector","Actuator Type":"Key","lifecycle_stage":"mature","Termination Type":"Connector","Protection Rating":"IP67","Contact Configuration":"2NO;4NC","Switching Current - AC":"1.5 A","Switching Current - DC":"220 mA","Switching Voltage - AC":"120 V","Switching Voltage - DC":"125 V","Service Life - Electric":"150000 Cycles","Number of Head Directions":"4","Service Life - Mechanical":"1 Million Cycles"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$210.73","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/67db0dd0bb84decbfc081f8f0ce98f36.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What are the key dimensions of the D4SLN4NFADN?","answer":"Depth is 39 mm, width is 39 mm, height is 155 mm. The square 39 x 39 mm footprint fits standard 40 mm cutouts."},{"question":"What compliance documentation does Omron provide for the D4SLN4NFADN?","answer":"The evidence does not list specific compliance certifications (RoHS, REACH, UL, IEC). As a standard Omron safety switch, it typically carries CE and UL marks, but confirm with the datasheet for the exact listing."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/omron/D4SLN4NFADN","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/omron/D4SLN4NFADN 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}}