{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH2911-1DB11","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH2911-1DB11","canonicalUrl":"https://aoctrl.com/siemens/3RH2911-1DB11","factsUrl":"https://aoctrl.com/api/mcp/products/3RH2911-1DB11","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS auxiliary switch block, 3RH2911-1DB11, 1NO+1NC, 10 A max, snap-on mounting, screw terminals.","salesMarkdown":"It provides one normally-open and one normally-closed contact, with a maximum rated current of 10 A. The current-carrying capacity depends on the operating voltage: at 24 V it handles 6 A (AC-15), at 230 V it handles 6 A, and at 400 V it handles 3 A. For DC switching, the ratings are lower — 6 A at 24 V, 2 A at 60 V, 1 A at 110 V, and 0.3 A at 220 V. Snap-on mounting directly onto the 3RT2 contactor or contactor relay — no tools needed. The block is 10 mm wide, 57.4 mm tall, and 66 mm deep, so it adds minimal width to the contactor assembly. Screw terminals accept 2x (0.5...1.5 mm²) or 2x (0.75...2.5 mm²) solid or stranded wire, or 2x (20...16) or 2x (18...14) AWG. The front face is IP20 rated, which is standard for panel-mounted auxiliary contacts.","metaTitle":"Siemens 3RH2911-1DB11 SIRIUS Auxiliary Switch, 1NO+1NC, 10 A","metaDescription":"Siemens 3RH2911-1DB11 SIRIUS auxiliary switch block, 1NO+1NC, rated 10 A max, snap-on mount for 3RT2 contactors. IP20 front. Current lifecycle. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Note":"with 3RT2","Depth":"66 mm","Width":"10 mm","Height":"57.4 mm","Maximum":"10 A","at 24 V":"6 A","at 60 V":"2 A","at 110 V":"1 A","at 125 V":"6 A","at 220 V":"0.3 A","at 230 V":"6 A","at 250 V":"6 A","at 400 V":"3 A","Mounting type":"snap-on mounting","During Storage":"-55 ... +80 °C","Leading Contact":"1","lifecycle_stage":"current","During Operation":"-25 ... +60 °C","Lagging Switching":"1","Product brand name":"SIRIUS","Contact reliability":"one incorrect switching operation of 100 million switching operations (17 V, 1 mA)","Suitability for use":"Contactor relay and power contactor","at 24 V rated value":"10 A","at 60 V rated value":"4.7 A","at 110 V rated value":"3 A","at 220 V rated value":"1.2 A","at 440 V rated value":"0.5 A","at 600 V rated value":"0.26 A","Instantaneous Contact":"0","With Core End Processing":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)","at AC-15 at 690 V rated value":"1 A","Protection class IP on the front":"IP20","Surge voltage resistance rated value":"6 kV","at AWG conductors for auxiliary contacts":"2x (20 ... 16), 2x (18 ... 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","Insulation voltage with degree of pollution 3 rated value":"690 V","Type of electrical connection for auxiliary and control current circuit":"screw-type 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=317006&mlfb=3RH2911-1DB11","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RH2911-1DB11/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3RH2911-1DB11 and how do I get a price?","answer":"This part is sourced to order against an RFQ through independent distribution. Submit an RFQ to confirm current availability and pricing — no stock or price figures are published here."},{"question":"What is the closest functional second-source for 3RH2911-1DB11?","answer":"The 3RH2911-1DB11 is specific to the 3RT2 contactor family. A functional equivalent from the same SIRIUS family is the 3RH2122-1WB40, which also provides 1NO+1NC but is designed for the 3RT1 contactor series — verify the contactor model before substituting."},{"question":"What is 3RH2911-1DB11's listed note (with 3RT2) on this component line?","answer":"The note states 'with 3RT2' — meaning this auxiliary switch block is designed for lateral mounting onto Siemens 3RT2 contactor relays and power contactors."},{"question":"What is 3RH2911-1DB11's listed depth (66 mm) on this component line?","answer":"The depth is 66 mm, which is the dimension from the mounting surface to the furthest point of the block when snapped onto the contactor."},{"question":"Will 3RH2911-1DB11 drop into a panel that was specified around 3RT5056-8AP38-0PR0 without rewiring?","answer":"No — the 3RH2911-1DB11 is designed for the 3RT2 contactor family, while the 3RT5056-8AP38-0PR0 belongs to the 3RT5 series. The mounting interface and terminal layout differ; rewiring would be required."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH2911-1DB11","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/3RH2911-1DB11 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}}