{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RK1902-1NB50","brand":"Siemens","brandSlug":"siemens","productSlug":"3RK1902-1NB50","canonicalUrl":"https://aoctrl.com/siemens/3RK1902-1NB50","factsUrl":"https://aoctrl.com/api/mcp/products/3RK1902-1NB50","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 3RK1902-1NB50 M12 bus cable, angled plug on angled socket, 2-pole, 4 A per pin, 5 m wire length, polyurethane jacket, UL/CSA/IEC/RoHS.","salesMarkdown":"## What this cable is — and what it connects The 3RK1902-1NB50: This is a pre-assembled M12 bus drop cable, angled on both ends — one M12 plug, one M12 socket, both with a right-angle outlet. The 5 m length with a 7.8 mm cable diameter is a standard Siemens fieldbus interconnect for ET 200 or SIMATIC remote I/O stations where the cable runs along a panel wall or into a tight enclosure corner. Two cores with red/green insulation carry the bus signal; the shield is a tinned copper braid. The M12 x 1 thread lock keeps the connection tight under vibration — no secondary latch needed. ## Rated for the panel, not the bench Pollution degree 3 means this cable is rated for conductive dust and occasional condensation — standard for industrial control cabinets, not clean-room or dry indoor-only use. The polyurethane jacket and thermoplastic polyurethane enclosure resist mineral oil and grease, though Siemens flags those as conditional — verify against your specific coolant or lubricant before committing the BOM line. Rated 4 A per pin max at 60 V AC/DC. That ampacity covers bus-powered sensors or a small auxiliary supply, but not a motor or heater circuit — keep it on signal duty. The cable is rated for 5,000,000 bending cycles — a high-flex rating for cable tracks or robot dress packs. The moulded strain relief handles the flex without pulling on the M12 contacts. ## Approvals and compliance — what the certs mean UL and CSA approved — accepted for North American panel builds without a separate evaluation. IEC approval covers the CE-mark jurisdictions. RoHS compliant. CCC and cUL are listed as No — if your shipment destination is China or you need a cUL mark for a Canadian job, this specific order code does not carry those marks. The cable itself may be functionally identical, but the cert stamp is absent.","metaTitle":"Siemens 3RK1902-1NB50 M12 Bus Cable, Angled, 2-Pole, 4A","metaDescription":"Siemens 3RK1902-1NB50 M12 angled plug/socket bus cable, 2-pole, 4A per pin, 5m length. UL, CSA, IEC, RoHS approved. Active production — quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Remote I/O & Fieldbus Modules"],"specifications":{"CCC":"No","title":"3RK1902-1NB50","C-Tick":"No","To Water":"conditional, must be checked relative to the application","To Grease":"conditional, must be checked relative to the application","at 9.6 kHz":"300Ω","UL approval":"Yes","Wire Length":"5m","at 38.4 kHz":"20Ω","description":"Bus cable for PROFIBUS assembled on both ends 2 x M12 angled 2-core, shielded Length 5.0 m angled","CSA approval":"Yes","IEC approval":"Yes","Of The Cable":"7.8mm","cUL approval":"No","at AC maximum":"60V","at DC maximum":"60V","Connector Type":"Plug/socket","To Mineral Oil":"conditional, must be checked relative to the application","Number Of Poles":"2","Of Cable Sheath":"Polyurethane","RoHS conformity":"Yes","lifecycle_stage":"current","Of The Enclosure":"Thermoplastic polyurethane","at 4 MHz maximum":"26dB/km","Cable Designation":"BUS: 1P24-19/2,55 02YS(ST)C11Y","at 16 MHz maximum":"52dB/km","Of Inner Conductor":"0.64mm","at 9.6 kHz maximum":"3dB/km","Degree Of Pollution":"3","Product Description":"M12 plug, angled on M12 socket, angled","at 3 MHz ... 20 MHz":"15Ω","at 38.4 kHz maximum":"5dB/km","Cable End Components":"populated on both sides","Design Of The Shield":"Shielding braid of tinned copper wire","Type Of Cable Outlet":"angled","Type Of Strain Relief":"molded","Of The Wire Insulation":"Polyethylene","Type Of Plug Interlock":"M12 x 1 thread","Ampacity Per Pin Maximum":"4A","Number Of Bending Cycles":"5 000 000","Number Of Electrical Cores":"2","Of The Insulation Of Data Wires":"Red, green","Conductor Cross Section Rated Value":"0.25mm²","Surge Voltage Resistance Rated Value":"1.5kV","With Single Bend Minimum Permissible":"58.5mm","Mechanical Service Life (Mating Cycles)":"100","With Multiple Bends Minimum Permissible":"78mm","connector coding of the M12 circular connector":"B","Symmetrical Tolerance Of The Outer Diameter Of The Cable":"0.2mm"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/2506c84bc50fd54eb200b0e325c9c833.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=352352&mlfb=3RK1902-1NB50"},"ai":{"faq":[{"question":"What compliance documentation does Siemens provide for 3RK1902-1NB50?","answer":"The cable carries UL, CSA, IEC, and RoHS declarations. No CCC or cUL certification. The polyurethane jacket and thermoplastic polyurethane enclosure are specified — material declarations are available from Siemens on request."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RK1902-1NB50","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/3RK1902-1NB50 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}}