{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RK1902-1GB50","brand":"Siemens","brandSlug":"siemens","productSlug":"3RK1902-1GB50","canonicalUrl":"https://aoctrl.com/siemens/3RK1902-1GB50","factsUrl":"https://aoctrl.com/api/mcp/products/3RK1902-1GB50","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 3RK1902-1GB50, M12 angled B-coded socket with open end, 2-pole, 5m PUR cable, 4A per pin max, UL/CSA/IEC approved.","salesMarkdown":"The Siemens 3RK1902-1GB50 is an M12 angled B-coded socket with an open cable end, designed for fieldbus and sensor/actuator connections in industrial automation panels. It carries a 5-meter polyurethane (PUR) cable sheath, rated for high-flex applications with 5,000,000 bending cycles, making it suitable for cable tracks or moving machine parts. The 2-pole, 2-core configuration with a shielding braid of tinned copper wire handles signal integrity up to 4 MHz with an attenuation of 26 dB/km at that frequency. Each pin is rated for a maximum ampacity of 4 A, and the connector is approved under UL, CSA, and IEC standards, with RoHS conformity confirmed. The M12 x 1 thread locking ensures a vibration-resistant connection in panel or machine-mount applications. ## Cable and Signal Characteristics The cable carries the designation BUS: 1P24-19/2,55 02YS(ST)C11Y, with an inner conductor diameter of 0.64 mm and an overall cable diameter of 7.8 mm. The wire insulation is polyethylene, and the data wire insulation colors are red and green. Impedance values are specified for the switching frequencies: 300 Ω at 9.6 kHz, 20 Ω at 38.4 kHz, and 15 Ω across the 3 MHz to 20 MHz range. Attenuation is rated at 3 dB/km maximum at 9.6 kHz, 5 dB/km at 38.4 kHz, 26 dB/km at 4 MHz, and 52 dB/km at 16 MHz. The shield design uses a tinned copper braid, and the strain relief is molded into the angled outlet.","metaTitle":"Siemens 3RK1902-1GB50 M12 Angled B-Coded Connector, 4A, 5m","metaDescription":"Siemens 3RK1902-1GB50 M12 angled B-coded socket with 5m PUR cable, 2-pole, 4A per pin. UL/CSA/IEC approved, RoHS compliant. Current lifecycle. 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":"3RK1902-1GB50","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 Pre-assembled at one end 1 x M12 angled, Socket 2-core, shielded Length 5.0 m","CSA approval":"Yes","IEC approval":"Yes","Of The Cable":"7.8mm","cUL approval":"No","at AC maximum":"60V","at DC maximum":"60V","Connector Type":"Socket/open","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 socket, angled B coded","at 3 MHz ... 20 MHz":"15Ω","at 38.4 kHz maximum":"5dB/km","Cable End Components":"open on one side","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":"5.85mm","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=487900&mlfb=3RK1902-1GB50"},"ai":{"faq":[{"question":"Where can I buy 3RK1902-1GB50 and get a price?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"What approvals does 3RK1902-1GB50 carry?","answer":"It carries UL, CSA, and IEC approvals, and is RoHS compliant. It does not carry CCC, C-Tick, or cUL approvals."},{"question":"What is the cable length and connector type?","answer":"The cable length is 5 meters, and the connector is an M12 angled B-coded socket with an open end."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RK1902-1GB50","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/3RK1902-1GB50 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}}