{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1900-1SB50","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1900-1SB50","canonicalUrl":"https://aoctrl.com/siemens/3RT1900-1SB50","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1900-1SB50","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS, identification labels, 3RT1900-1SB50, 20 x 9 mm pastel-turquoise, 19 frames with 20 labels each, phased-out product.","salesMarkdown":"The Siemens 3RT1900-1SB50 is an identification-label kit for the SIRIUS contactor and motor-starter range: 19 frames, each holding 20 self-adhesive labels sized 20 x 9 mm in pastel-turquoise. It is a marking accessory — no electrical function, no switching duty. The labels fit the transparent label holders on SIRIUS devices (contactors, overload relays, auxiliary switch blocks) so the panel builder can tag each component with its circuit designation. Each frame holds 20 labels; the 20 x 9 mm size matches the standard label window on SIRIUS contactors and auxiliary blocks.","metaTitle":"Siemens 3RT1900-1SB50 SIRIUS Identification Labels, 20x9 mm","metaDescription":"Siemens 3RT1900-1SB50 SIRIUS identification labels (20x9 mm pastel-turquoise), 19 frames with 20 labels each. Phased-out; successor is SIRIUS 3RT2. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"lifecycle_stage":"current","Product Brand Name":"SIRIUS","Product Designation":"Identification labels","Substance Prohibitance (Date)":"01.07.2006"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=502439&mlfb=3RT1900-1SB50","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1900-1SB50/alternatives.json"},"ai":{"faq":[{"question":"Will 3RT1900-1SB50 labels fit a panel built around 3RT1015-1BB42 contactors?","answer":"Yes — the 20 x 9 mm label size and SIRIUS frame format are common across the SIRIUS contactor family including size S00 devices like 3RT1015-1BB42. The labels snap into the same transparent holder."},{"question":"What compliance documentation does Siemens provide for 3RT1900-1SB50?","answer":"The part carries a Substance Prohibitance date of 01.07.2006, indicating RoHS compliance for the European market from that date. Standard Siemens documentation includes the declaration of conformity for the SIRIUS accessory range."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1900-1SB50","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/3RT1900-1SB50 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}}