{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"D4NS2DF","brand":"Omron","brandSlug":"omron","productSlug":"D4NS2DF","canonicalUrl":"https://aoctrl.com/omron/D4NS2DF","factsUrl":"https://aoctrl.com/api/mcp/products/D4NS2DF","rawCanonicalId":null},"summary":{"shortDescription":"Omron D4NS series safety interlock switch, key actuator, 3NC contact configuration, 240 VAC 3 A / 250 VDC 270 mA, IP67, screw terminal, 30 mm depth, 96 mm height.","salesMarkdown":"## What the 3NC contacts and IP67 rating mean for a safety circuit The D4NS2DF is Omron's D4NS-series compact safety interlock switch — the 3NC contact configuration is the defining safety characteristic here. All three contacts are normally-closed when the guard is open, and they open (breaking the safety circuit) as soon as the actuator is withdrawn. Power must be applied to hold the circuit closed — a fail-safe behavior that makes this topology standard for machine guarding on EN ISO 14119-compliant machinery. The 500,000-cycle electrical service life gives a realistic replacement interval for a guarded panel that cycles frequently; the 1,000,000-cycle mechanical rating covers the actuator mechanism itself, which typically outlasts the contacts under load. ## What the AC and DC ratings govern The AC side is rated 3 A at 240 V — that covers the small auxiliary contactor coils and indicator lamps common on a guard-monitoring circuit. At 250 VDC the rating drops to 270 mA, which reflects the harder DC arc to suppress. A 24 VDC pilot relay coil drawing well under that limit is fine; a DC solenoid pulling 1 A at 24 V is not — the DC rating, not the AC headline, is the limiting figure for low-voltage DC control circuits. Screw terminals accept a range of wire sizes and ferrule terminations — the clamp mechanism grips the full conductor cross-section without cold flow on the resin body.","metaTitle":"Omron D4NS2DF Safety Interlock Switch, 3NC, IP67","metaDescription":"Omron D4NS series safety interlock switch, 3NC contacts, 240 VAC / 250 VDC, IP67, screw terminal. Mature active line — quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Limit Switches"],"specifications":{"Depth":"30 mm","Width":"31 mm","title":"D4NS2DF","Height":"96 mm","Series":"D4NS","Switch Type":"Interlock Switch","description":"Safety Interlock Switch, 3NC, IP67, Screw Terminal","Actuator Type":"Key","lifecycle_stage":"mature","Housing Material":"Resin","Termination Type":"Screw Terminal","Protection Rating":"IP67","Contact Configuration":"3NC","Switching Current - AC":"3 A","Switching Current - DC":"270 mA","Switching Voltage - AC":"240 V","Switching Voltage - DC":"250 V","Service Life - Electric":"500000 Cycles","Number of Head Directions":"4","Service Life - Mechanical":"1 Million Cycles"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$37.34","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/f0077ece5228fec3a0193697a43e1d79.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the D4NS2DF's depth and how does it fit in a panel?","answer":"The listed depth is 30 mm and the width is 31 mm — a compact form factor that fits a standard 40 mm DIN rail without protrusions, or a panel cutout. The head rotates through four directions, so the actuator entry orientation can be set in the field without swapping the body, which simplifies installation on a guard door that opens from either side."},{"question":"What compliance documentation does Omron provide for D4NS2DF?","answer":"The spec table does not list specific certification standards (UL, CSA, CE, IEC) against this order code — those details are confirmed in the full Omron D4NS datasheet, which carries the applicable safety-function declarations and test conditions for the guard-monitoring circuit. Request the compliance documentation directly from Omron or an authorized channel as part of the machine's risk assessment under EN ISO 13849."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/omron/D4NS2DF","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/D4NS2DF 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}}