{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"6GT2891-6UH20","brand":"Siemens","brandSlug":"siemens","productSlug":"6GT2891-6UH20","canonicalUrl":"https://aoctrl.com/siemens/6GT2891-6UH20","factsUrl":"https://aoctrl.com/api/mcp/products/6GT2891-6UH20","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIMATIC RF1000 connecting cable, pre-assembled RS232, 4-core, 2 m, 300 V, black, braided shield.","salesMarkdown":"The Siemens 6GT2891-6UH20 is a pre-assembled RS232 communication cable that connects an RF1040R or RF1070R reader to the RF120C communication module. It's a 4-core LiYCY cable, 2 m long, with a braided shield of tin-plated copper wires and a PVC jacket. One end terminates in a D-sub male 9-pole connector at a 45° angle; the other in a PicoBlade 51021 5-pole. That D-sub angle matters when you're routing inside a tight enclosure — it keeps the cable profile low against the panel wall. Rated for 300 V maximum, which is the UL AWM 2464/2517 listing for the cable itself (cable only, not the assembled plug). That 300 V rating covers the signal isolation between reader and module in an industrial environment. ## Fit and routing constraints Fixed at 2 m — no field-cut length adjustment. The minimum bend radius is 69 mm for both single and multiple bends, so plan your cable tray or trunking path with that radius in mind. Loop resistance is 130 mΩ/m maximum, which is fine for RS232 at this distance. Operates from -15 to +80 °C; stores and transports from -30 to +80 °C. Flame resistant per IEC 60332-1-2, so it passes the vertical-wire flame test for control panels. Silicon-free and UV-resistant, which matters if the cable passes near a window or UV-curing station. ## What it resists and what it doesn't Resistant to water, mineral oil, and UV radiation. Not halogen-free — the PVC insulation will produce hydrogen chloride gas in a fire, so factor that into your panel fire-suppression strategy if you're in a zone that mandates low-halogen cabling.","metaTitle":"Siemens 6GT2891-6UH20 SIMATIC RF1000 connecting cable, 2 m,","metaDescription":"Siemens 6GT2891-6UH20 SIMATIC RF1000 connecting cable, pre-assembled RS232, 2 m, 300 V rated. Active production. UL recognized. Order to RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["RFID & Auto-ID"],"specifications":{"Maximum":"300 V","To Water":"resistant","Wire Length":"2 m","Halogen-Free":"No","Silicon-Free":"Yes","Fire Behavior":"flame resistant according to IEC 60332-1-2","During Storage":"-30 ... +80 °C","To Mineral Oil":"resistant","Of Cable Sheath":"Black","lifecycle_stage":"mature","During Operation":"-15 ... +80 °C","During Transport":"-30 ... +80 °C","Cable Designation":"LiYCY 4x AWG26","Weight Per Length":"35 kg/km","During Installation":"-15 ... +80 °C","Product Description":"Communication cable (4-core)","Suitability For Use":"plug-in cable for connecting an RF1000 reader to the RF120C communication module","Design Of The Shield":"Braided shield made of tin-plated copper wires","Of The Wire Insulation":"PVC","according to IEC 81346-2":"WG","Number Of Electrical Cores":"4","Type Of Electrical Connection":"D-sub (male, 9-pole, 45°) / PicoBlade 51021 5-pole","UL/ETL listing / 300 V Rating":"Yes; UL AWM 2464/2517 (only cable without plug)","according to IEC 81346-2:2019":"WGB","Of The Insulation Of Data Wires":"international color code","Number Of Electrical Connections":"2","Loop Resistance Per Length / Maximum":"130 mΩ/m","With Single Bend / Minimum Permissible":"69 mm","With Multiple Bends / Minimum Permissible":"69 mm","radiological resistance / to UV radiation":"resistant"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/1d72b3de3d7c5c0c60f16a48ecbba58c.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1357618&mlfb=6GT2891-6UH20","alternativesUrl":"https://aoctrl.com/api/mcp/products/6GT2891-6UH20/alternatives.json"},"ai":{"faq":[{"question":"What is the maximum voltage rating?","answer":"300 V, per the UL AWM listing on the cable itself (cable only, not the assembled plug connectors)."},{"question":"Is this cable resistant to water and oil?","answer":"Yes, it's rated as resistant to water and to mineral oil. Also UV-resistant."},{"question":"Does this cable have a UL listing?","answer":"The cable (without plug) carries UL AWM 2464/2517 recognition at 300 V. The assembled cable as a whole is not separately UL-listed."},{"question":"What connectors are on each end?","answer":"One end is a D-sub male 9-pole at a 45° angle; the other is a PicoBlade 51021 5-pole. The 45° D-sub helps with low-profile routing in shallow enclosures."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/6GT2891-6UH20","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/siemens/6GT2891-6UH20 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:15:54.622Z","lastPublished":"2026-09-02T08:15:54.622Z","indexable":true}}