{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"D4SLN4EFADN","brand":"Omron","brandSlug":"omron","productSlug":"D4SLN4EFADN","canonicalUrl":"https://aoctrl.com/omron/D4SLN4EFADN","factsUrl":"https://aoctrl.com/api/mcp/products/D4SLN4EFADN","rawCanonicalId":null},"summary":{"shortDescription":"Omron D4SL series guard lock safety-door switch, D4SLN4EFADN, 2NO/3NC contact configuration, IP67, connector termination, 39 x 39 x 155 mm.","salesMarkdown":"## Guard locking — holds the door shut until the safety circuit releases it The D4SLN4EFADN is a guard lock safety-door switch from Omron's D4SL series. Unlike a basic interlock that only detects the door position, this switch physically locks the guard door closed until the machine controller de-energizes the lock solenoid — preventing access while hazardous motion is still coasting down. The contact configuration is 2 normally-open and 3 normally-closed (2NO/3NC). The NC contacts are the safety-rated channel wired into the safety relay or PLC safety input; the NO contacts signal door-locked status back to the standard control logic. ## IP67 and connector termination — built for washdown zones Rated IP67, the switch body and the connector interface withstand hose-directed water and dust ingress — suitable for food processing, beverage lines, or any area where the guard sees periodic washdown. Termination is via a connector, not a hardwired pigtail. The mating cordset (typically an M12 or similar industrial connector) must be ordered separately; the connector style is not specified here, so confirm the pinout and cordset part number against the machine wiring diagram before ordering. ## Switching limits and cycle life — signal-level duty, not power switching The contacts are rated for 1.5 A at 120 V AC and 220 mA at 125 V DC. This is a signal-level switch feeding a safety PLC or relay input — it is not designed to break motor currents or solenoid loads directly. If the load exceeds these limits, an interposing safety relay or contactor must be used. Electrical life is 150,000 cycles; mechanical life is 1 million cycles. On a high-cycle door (e.g., a packaging machine that opens and closes every 30 seconds), the electrical life is reached in about 1,250 hours of operation — budget a replacement interval accordingly. ## Physical fit — 39 mm square body, 155 mm tall The switch body measures 39 mm wide by 39 mm deep by 155 mm tall. The 39 mm square cross-section fits standard 40 mm panel cutouts; the 155 mm height is the dimension that determines enclosure clearance — ensure the guard frame or enclosure has at least 160 mm of vertical space for the switch body and actuator key travel. The actuator is a key type, and the head can be oriented in four directions — top, bottom, left, or right entry — giving flexibility for different door hinge configurations without changing the switch body.","metaTitle":"Omron D4SLN4EFADN Guard Lock Safety-Door Switch, 2NO/3NC","metaDescription":"Omron D4SLN4EFADN guard lock safety-door switch, 2NO/3NC contacts, IP67, connector termination. Sourced to order against 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":"D4SLN4EFADN","Height":"155 mm","Series":"D4SL","Lock Type":"Guard Locking","Switch Type":"Safety-Door Switch","description":"Guard Lock Safety-Door Switch, 2NO / 3NC, IP67, Connector","Actuator Type":"Key","lifecycle_stage":"mature","Termination Type":"Connector","Protection Rating":"IP67","Contact Configuration":"2NO;3NC","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":"$172.00","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/63ab5d6e36f2ff7074266b06a82e8a5f.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the contact configuration on the D4SLN4EFADN?","answer":"The switch has 2 normally-open and 3 normally-closed contacts (2NO/3NC). The three NC contacts are the safety-rated channel; the two NO contacts provide door-locked status feedback to the control system."},{"question":"What is the IP rating and where can this switch be used?","answer":"The D4SLN4EFADN is rated IP67, meaning it is dust-tight and protected against temporary immersion in water. It is suitable for washdown environments such as food processing, beverage, or pharmaceutical lines where the guard door sees periodic hose-down cleaning."},{"question":"What are the switching current limits for this safety switch?","answer":"The contacts are rated for 1.5 A at 120 V AC and 220 mA at 125 V DC. This is a signal-level switch for safety PLC or relay inputs — it cannot directly break motor or solenoid loads. Use an interposing safety relay or contactor for higher current loads."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/omron/D4SLN4EFADN","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/D4SLN4EFADN 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}}