{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"6GT2891-4UH20","brand":"Siemens","brandSlug":"siemens","productSlug":"6GT2891-4UH20","canonicalUrl":"https://aoctrl.com/siemens/6GT2891-4UH20","factsUrl":"https://aoctrl.com/api/mcp/products/6GT2891-4UH20","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIMATIC RF1000 connecting cable, pre-assembled RS232, 2 m, 300 V, 4-core LiYCY, M12 female 8-pole to PicoBlade 5-pole.","salesMarkdown":"## What this cable is for The 6GT2891-4UH20: This is a pre-assembled RS232 communication cable that links an RF1040R or RF1070R reader to an RF166C, RF170C, or RF18xC/CI interface module. It's a 4-core LiYCY cable, 2 m long, with a braided shield of tin-plated copper wires for noise rejection on the serial link. Rated 300 V maximum — that's the insulation rating for the cable and its UL AWM listing (2464/2517 applies to the cable without plug). On an RFID reader line running at 24 VDC or similar low-voltage control power, this is well above the working voltage; the 300 V rating is about the cable's ability to coexist in a tray or panel with higher-voltage circuits without derating. The cable is resistant to water and mineral oil, and it's silicon-free — important if this runs through a washdown zone or near potting/painting lines where silicone contamination causes adhesion failures. It's not halogen-free, so check local fire-smoke requirements for enclosed spaces. Flame resistance per IEC 60332-1-2 means the cable won't propagate flame along a vertical run — standard for control cables inside cabinets or cable trays. ## Connector and wiring detail One end is an M12 female, 8-pole, straight connector; the other is a PicoBlade 51021 5-pole. That M12 end plugs directly into the reader; the PicoBlade end connects to the interface module's internal header. The 4 cores are color-coded per international standard, and the shield is a braided tin-plated copper construction — ground it at the reader end per usual RS232 practice.","metaTitle":"Siemens 6GT2891-4UH20 SIMATIC RF1000 Connecting Cable, 300 V","metaDescription":"Active Siemens SIMATIC RF1000 connecting cable, 2 m, 300 V rated, UL AWM listed, pre-assembled RS232 for RF1000 readers to RF166C/RF170C/RF18xC/CI. Sourced to order.","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 with RF166C, RF170C or RF18xC/CI","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":"M12 (female, 8-pole, straight) / 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/12d9d13833ae942bea1197ac8bf4c057.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1357617&mlfb=6GT2891-4UH20","alternativesUrl":"https://aoctrl.com/api/mcp/products/6GT2891-4UH20/alternatives.json"},"ai":{"faq":[{"question":"What is the voltage rating on this cable?","answer":"300 V maximum, per the UL AWM listing (2464/2517 for the cable without plug). This is the insulation rating, not the signal voltage — the RS232 link runs at control-level voltages well below that."},{"question":"What connectors does this cable use?","answer":"M12 female, 8-pole, straight on one end; PicoBlade 51021 5-pole on the other. The M12 end connects to the RF1000 reader; the PicoBlade end goes to the interface module."},{"question":"Is this cable suitable for washdown environments?","answer":"It's resistant to water and mineral oil, and it's silicon-free, which helps in food or paint environments. But it's not halogen-free and the jacket is PVC, so check your plant's chemical exposure and fire-smoke requirements."},{"question":"Does this cable have UL listing?","answer":"Yes — UL AWM 2464/2517 applies to the cable portion (without the molded plug). The listing covers the 300 V rating and flame resistance."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/6GT2891-4UH20","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/6GT2891-4UH20 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}}