{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"D4SLN4DFA","brand":"Omron","brandSlug":"omron","productSlug":"D4SLN4DFA","canonicalUrl":"https://aoctrl.com/omron/D4SLN4DFA","factsUrl":"https://aoctrl.com/api/mcp/products/D4SLN4DFA","rawCanonicalId":null},"summary":{"shortDescription":"Omron D4SL series, guard lock safety-door switch, D4SLN4DFA, 4NC, IP67, terminal block, 1.5 A AC / 220 mA DC, 120 V AC / 125 V DC.","salesMarkdown":"The Omron D4SLN4DFA is a guard lock safety-door switch from the D4SL series, with a key-actuated locking mechanism and 4NC contact configuration. It is rated IP67, meaning the housing and terminal area are sealed against dust ingress and temporary water immersion — suitable for washdown zones in food, beverage, or pharmaceutical lines. ## Switching Ratings and Service Life Rated switching current is 1.5 A AC at 120 V and 220 mA DC at 125 V. These are the maximum continuous switching limits; the electric service life is listed at 150,000 cycles, while mechanical endurance reaches 1 million cycles. The 4NC contact set provides dual-channel redundancy for safety circuits up to PL d / SIL 3, typical for guard-door monitoring on a machine cell. ## Mounting and Actuation Dimensions are 39 mm wide by 39 mm deep by 180 mm tall, fitting a standard panel cutout for safety interlock switches. The key actuator can be inserted from four head directions, simplifying alignment on hinged or sliding guards. Termination is via a terminal block — no connector to crimp, but the wiring must be secured inside the IP67 enclosure before the cover is closed.","metaTitle":"Omron D4SLN4DFA Guard Lock Safety-Door Switch, 4NC, IP67","metaDescription":"Omron D4SLN4DFA guard lock safety-door switch, 4NC contacts, IP67, terminal block. Mature lifecycle stage; sourced to order against an RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Limit Switches"],"specifications":{"Depth":"39 mm","Width":"39 mm","title":"D4SLN4DFA","Height":"180 mm","Series":"D4SL","Lock Type":"Guard Locking","Switch Type":"Safety-Door Switch","description":"Guard Lock Safety-Door Switch, 4NC, IP67, Terminal Block","Actuator Type":"Key","lifecycle_stage":"mature","Termination Type":"Terminal Block","Protection Rating":"IP67","Contact Configuration":"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":"$217.30","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/67db0dd0bb84decbfc081f8f0ce98f36.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What are the key switching ratings for this switch?","answer":"The switch is rated for 1.5 A AC at 120 V and 220 mA DC at 125 V, with an electric service life of 150,000 cycles and a mechanical life of 1 million cycles."},{"question":"What is the protection rating and contact configuration?","answer":"IP67 rated, with a 4NC contact configuration — four normally-closed contacts providing dual-channel safety monitoring."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/omron/D4SLN4DFA","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/D4SLN4DFA 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}}