{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH1911-2NF11","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH1911-2NF11","canonicalUrl":"https://aoctrl.com/siemens/3RH1911-2NF11","factsUrl":"https://aoctrl.com/api/mcp/products/3RH1911-2NF11","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS auxiliary switch block, 3RH1911-2NF11, 1 NO + 1 NC, spring-loaded terminals, snap-on mounting for size S00 contactors, 690 V insulation, 6 kV surge, IP20 front.","salesMarkdown":"The Siemens SIRIUS 3RH1911-2NF11 is a solid-state compatible auxiliary switch block designed for use with SIRIUS contactor relays and power contactors. It provides one normally open and one normally closed contact, rated for switching at 24 V and 60 V at 0.3 A, in a compact size S00 housing that snaps onto the contactor. The spring-loaded terminals accept 2x (0.5... 1.5 mm²) with ferrule or 2x (0.5... 2.5 mm²) solid/stranded without, making for quick wiring in a panel build. Mechanical life is 5 million switching cycles typical, and contact reliability is rated at 1 faulty switching per 100 million operations at 17 V, 1 mA — solid for low-level signal switching in PLC or safety circuits. This part is a phased-out product. The official Siemens successor is the SIRIUS 3RH2911-2NF11, which is the preferred drop-in replacement. For new designs, specify the 3RH2911-2NF11 to avoid a future last-time-buy scramble. The 36.5 mm width and 46 mm depth fit the S00 footprint, so it does not steal extra rail space.","metaTitle":"Siemens 3RH1911-2NF11 SIRIUS Auxiliary Switch, 1 NO + 1 NC,","metaDescription":"Siemens SIRIUS 3RH1911-2NF11 solid-state compatible auxiliary switch, 1 NO + 1 NC, spring-loaded terminals, 690 V insulation, 6 kV surge. Phased-out; successor 3RH2911-2NF11. Avail","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Note":"with 3RH1","Depth":"46 mm","Width":"36.5 mm","Height":"37.5 mm","at 24 V":"0.3 A","at 60 V":"0.3 A","Mounting type":"snap-on mounting","During Storage":"-55 ... +80 °C","lifecycle_stage":"current","During Operation":"-25 ... +60 °C","Product brand name":"SIRIUS","Suitability for use":"Contactor relay and power contactor","Instantaneous Contact":"1","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 conductors 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":"5 000 000","Insulation voltage with degree of pollution 3 at AC rated value":"690 V","Type of electrical connection for auxiliary and control current circuit":"spring-loaded terminals"}},"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=57221&mlfb=3RH1911-2NF11","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RH1911-2NF11/alternatives.json"},"ai":{"faq":[{"question":"What is the closest functional replacement for 3RH1911-2NF11?","answer":"The Siemens 3RH2911-2NF11 is the direct successor and a drop-in replacement. It uses the same spring-loaded terminal technology and S00 footprint."},{"question":"Where can I buy 3RH1911-2NF11?","answer":"It is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — no stock numbers or prices are listed publicly."},{"question":"What are the key ratings for 3RH1911-2NF11?","answer":"It provides 1 NO + 1 NC contact rated at 0.3 A at 24 V and 60 V, with 690 V insulation voltage, 6 kV surge resistance, and 5 million mechanical cycles typical. The spring-loaded terminals accept 0.5–2.5 mm² wire."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH1911-2NF11","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/3RH1911-2NF11 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}}