{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"140CRA21120","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"140CRA21120","canonicalUrl":"https://aoctrl.com/schneider/140CRA21120","factsUrl":"https://aoctrl.com/api/mcp/products/140CRA21120","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric Modicon Quantum DIO drop interface, 140CRA21120, 30 I/O words, 24 V DC, 2 redundant ports, UL 508.","salesMarkdown":"The Schneider Electric 140CRA21120 is a Modicon Quantum DIO drop interface — 30 input words, 32 output words, 24 V DC supply with 20…30 V limits. It is now listed as obsolete by the manufacturer. ## What the ratings tell you Two redundant ports, each handling the full I/O count. Supply current maxes at 1.6 A at 24 V with a 30 A inrush for 1 ms. Outputs rated 3 A nominal with short-circuit and overvoltage protection built in. Power dissipation sits at 11 W. On a standard Quantum backplane, the part occupies one slot and works with 2-, 3-, 4-, 6-, 10-, or 16-position racks. ## Sourcing an obsolete Quantum DIO drop Schneider has formally obsoleted this module. There is no direct factory replacement listed. For legacy systems still running this part, supply runs through independent channels — surplus stocks, last-time-buy leftovers, and broker networks. Availability is project-specific. Quoting to an RFQ is the standard path; lead time and condition vary with lot found. ## Integration notes Field-side wiring lands on a 7-pole terminal block. Diagnostics run checksum and RAM address tests at startup and during runtime. Operating ambient 0…60 °C, storage -40…85 °C, altitude to 5000 m. UL 508 listed. Fit check: verify the backplane model accepts this standard-format module.","metaTitle":"Schneider 140CRA21120 Quantum DIO Drop, Obsolete","metaDescription":"Obsolete Modicon Quantum 140CRA21120 DIO drop interface, 30 I/32 O words, 24 V DC. Sourced to order against RFQ through independent channels.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":[],"specifications":{"Category":"US1PC2118155","I/O words":"30 I/32 O","Standards":"UL 508","Module format":"Standard","Inrush current":"30 A 24 V","Number of port":"2 redundant","Output voltage":"5.1 V","lifecycle_stage":"eol_hot","Range of Product":"Modicon Quantum automation platform","Relative Humidity":"95 % without condensation","Operating altitude":"<= 16404.2 ft (5000 m)","Typical backplanes":"2 positions 3 positions 6 positions 16 positions 4 positions 10 positions","Diagnostics startup":"Checksum RAM RAM address","Maximum buffer time":"1 ms","Diagnostics run time":"Checksum RAM address RAM","Minimum load current":"0 A","Protective treatment":"TC","Nbr. of units in pkg.":"1","Supply voltage limits":"20...30 V","Associated fuse rating":"2.5 A","Maximum supply current":"1.6 A 24 V","Nominal Output Current":"3 A","Power dissipation in W":"11 W","Connections - Terminals":"Terminal block, 7 poles","Short-circuit protection":"With","Product or Component Type":"DIO drop interface","[Us] rated supply voltage":"24 V DC","Output overvoltage protection":"With","Ambient Air Temperature for Storage":"-40...185 °F (-40...85 °C)","Resistance to electromagnetic fields":"9.1 V/m (10 V/m) 80...2000 MHz IEC 801-3","Ambient Air Temperature for Operation":"32...140 °F (0...60 °C)","Resistance to electrostatic discharge":"4 kV contact IEC 801-2 8 kV on air IEC 801-2"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2,355.16","priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/bb94de3be528b0eb9625b5e24065cb91.pdf","sourceUrl":null,"alternativesUrl":"https://aoctrl.com/api/mcp/products/140CRA21120/alternatives.json"},"ai":{"faq":[{"question":"What are the key ratings for the 140CRA21120?","answer":"30 input words and 32 output words, 24 V DC supply (20…30 V range), 3 A nominal output per point, two redundant ports, UL 508 listed."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/140CRA21120","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/schneider/140CRA21120 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:21:01.794Z","lastPublished":"2026-09-02T08:21:01.794Z","indexable":true}}