{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH1911-2FB11","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH1911-2FB11","canonicalUrl":"https://aoctrl.com/siemens/3RH1911-2FB11","factsUrl":"https://aoctrl.com/api/mcp/products/3RH1911-2FB11","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RH1911-2FB11 auxiliary switch block, 1 NO + 1 NC, 10 A, spring-loaded terminals, snap-on mounting for Size S00 contactors.","salesMarkdown":"It provides one normally open (NO) and one normally closed (NC) contact, rated for a maximum of 10 A, with switching capacities specified across a range of voltages — for example, 6 A at 24 V, 6 A at 230 V, and 3 A at 400 V. The spring-loaded terminals accept conductors without core end processing up to 2x 2.5 mm², making for quick wiring in panel builds. ## Integration Notes Snap-on mounting onto Size S00 contactors or contactor relays means it clips directly onto the device front without tools. The 36.5 mm width and 46 mm depth keep the assembly within the standard DIN-rail envelope. Spring-loaded terminals reduce wiring time compared to screw terminals, and the IP20 front protection is standard for enclosed panel use. ## Key Ratings in Context The 10 A maximum rating applies across the contact set, but the actual switching capacity depends on the circuit voltage and load type. For AC-15 control-circuit duty at 690 V, the rated value is 1 A.","metaTitle":"Siemens 3RH1911-2FB11 SIRIUS Auxiliary Switch Block, 10 A, S","metaDescription":"Siemens 3RH1911-2FB11 SIRIUS auxiliary switch block, 1 NO + 1 NC, 10 A max, spring-loaded terminals, snap-on mounting. Phased-out; successor 3RH2911-2FB11 available. Sourced to ord","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"46 mm","Width":"36.5 mm","Height":"37.5 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, 5 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)","Without Core End Processing":"2x (0.5 ... 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 ... 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":"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=166833&mlfb=3RH1911-2FB11","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RH1911-2FB11/alternatives.json"},"ai":{"faq":[{"question":"What replaces the 3RH1911-2FB11?","answer":"The official successor is the SIRIUS 3RH2911-2FB11, which is the preferred replacement type."},{"question":"What are the key dimensions of the 3RH1911-2FB11?","answer":"Width is 36.5 mm, height is 37.5 mm, and depth is 46 mm."},{"question":"What type of terminals does the 3RH1911-2FB11 use?","answer":"Spring-loaded terminals for the auxiliary and control current circuits, accepting 2x (0.5... 1.5 mm²) with core end processing or 2x (0.5... 2.5 mm²) without."},{"question":"Can the 3RH1911-2FB11 be mounted on a 3RT1015-1BB42 contactor?","answer":"Yes, it is designed for snap-on mounting onto Size S00 contactors and contactor relays, which includes the 3RT1015 series. The mounting footprint and interface are standard across the SIRIUS Size S00 family."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH1911-2FB11","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/3RH1911-2FB11 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}}