{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"D4SL-N4GFA-DN","brand":"Omron","brandSlug":"omron","productSlug":"D4SL-N4GFA-DN","canonicalUrl":"https://aoctrl.com/omron/D4SL-N4GFA-DN","factsUrl":"https://aoctrl.com/api/mcp/products/D4SL-N4GFA-DN","rawCanonicalId":null},"summary":{"shortDescription":"Omron D4SL-N4GFA-DN, Guard Lock Safety-door Switch, 24VDC solenoid release (orange LED), 3NC + 1NC/1NO contacts, M20 conduit, connector type.","salesMarkdown":"The Omron D4SL-N4GFA-DN is a guard lock safety-door switch with a mechanical lock and 24 VDC solenoid release, indicated by an orange LED. The built-in switch configuration is 3NC + 1NC/1NO, giving you three normally-closed safety contacts plus one auxiliary contact that can be wired NC or NO. The head is resin, the conduit outlet is M20, and the connection method is a connector. The 24 VDC solenoid release means this switch unlocks the guard when power is applied to the solenoid — a standard fail-locked configuration. The orange LED confirms solenoid power is present, which helps during commissioning and fault-finding on the line. The 3NC + 1NC/1NO contact arrangement is typical for safety circuits: the three NC contacts go into the safety relay or controller (redundant channel monitoring), while the auxiliary contact signals the guard status to a PLC or indicator lamp. The M20 conduit entry accepts standard metric cable glands, and the connector version (N in the code) means you can pre-wire a harness and plug it in during installation — saves time on panel builds or machine changeovers. This class of guard lock switch is used on machine guarding — access doors, gates, and hatches where the hazardous motion must be stopped before the guard can be opened, and the guard must stay locked until the machine is safe. The solenoid release (power-to-unlock) is the standard choice for applications where a power loss should keep the guard locked, not release it. The resin head and M20 conduit make it suitable for industrial environments with moderate washdown or dust exposure.","metaTitle":"Omron D4SL-N4GFA-DN Guard Lock Safety-door Switch, 24VDC Sol","metaDescription":"Omron D4SL-N4GFA-DN guard lock safety-door switch with 24VDC solenoid release, 3NC+1NC/1NO contacts, M20 conduit, connector type. Mature lifecycle, sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Limit Switches"],"specifications":{"title":"D4SL-N4GFA-DN","Indicator":"D = 24VDC (orange LED indicator)","Product No.":"D4SL-N4GFA-DN","description":"Guard Lock Safety-door Switch","Product Type":"Guard Lock Safety-door Switch","Head Material":"F = Resin","Conduit Outlet":"4 = M20","Built-in Switch":"G = 3NC + 1NC/1NO","Shipping Weight":"1.5 Kg","lifecycle_stage":"mature","Release Key Type":"− = Standard release key (metal)","Connection Method":"N = Connector","Estimated Lead Time":"Usually ships in 1-10 working days.","Door Lock and Release":"A = Mechanical lock/24VDC solenoid release"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$173.00","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/ee6db9fcbe980d3933c97068e27e7866.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the built-in switch configuration of the D4SL-N4GFA-DN?","answer":"The built-in switch is 3NC + 1NC/1NO. That gives three normally-closed safety contacts for redundant safety circuit monitoring, plus one auxiliary contact that can be wired normally-closed or normally-open for status feedback."},{"question":"What does the orange LED indicator mean on this switch?","answer":"The orange LED indicates that 24 VDC power is applied to the solenoid release. It is a quick visual check that the solenoid is energized and the guard is unlocked."},{"question":"What is the connection method for the D4SL-N4GFA-DN?","answer":"It uses a connector (N in the order code). This allows pre-wiring a harness and plugging it in during installation, which speeds up wiring and simplifies replacement."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/omron/D4SL-N4GFA-DN","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/D4SL-N4GFA-DN 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}}