{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH1921-2FJ31","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH1921-2FJ31","canonicalUrl":"https://aoctrl.com/siemens/3RH1921-2FJ31","factsUrl":"https://aoctrl.com/api/mcp/products/3RH1921-2FJ31","rawCanonicalId":null},"summary":{"shortDescription":"Solid-state-compatible auxiliary switch 1 NO + 1 NC, solid-state compatible 2 NO conventional Size S0... S12 front, spring type! Phased-out product! Successor is SIRIUS 3RH2","salesMarkdown":null,"metaTitle":"3RH1921-2FJ31","metaDescription":"Solid-state-compatible auxiliary switch 1 NO + 1 NC, solid-state compatible 2 NO conventional Size S0... S12 front, spring type! Phased-out product! Successor is SIRIUS 3RH2","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Note":"with 3RT1","Depth":"51 mm","Width":"44 mm","Height":"38 mm","at 24 V":"0.3 A","at 60 V":"0.3 A","at 110 V":"3 A","at 220 V":"1 A","During Storage":"-55 ... +80 °C","lifecycle_stage":"current","During Operation":"-25 ... +60 °C","Fastening Method":"snap-on mounting","Product Brand Name":"SIRIUS","Suitability For Use":"Contactor relay and power contactor","Instantaneous Contact":"3","With Core End Processing":"2x (0.5 ... 1.5 mm²)","Without Core End Processing":"2x (0.5 ... 2.5 mm²)","protection class IP on the front":"IP20","Surge Voltage Resistance Rated Value":"6 kV","at AWG cables for auxiliary contacts":"2x (20 ... 14)","Contact Reliability Of Auxiliary Contacts":"1 faulty switching per 100 million (17 V, 1 mA)","Mechanical Service Life (Switching Cycles) Typical":"10 000 000","Type Of Electrical Connection For Auxiliary And Control Circuit":"screw-type terminals","insulation voltage with degree of pollution 3 at AC rated value":"690 V"}},"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=389428&mlfb=3RH1921-2FJ31","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RH1921-2FJ31/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH1921-2FJ31","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/3RH1921-2FJ31 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}}