{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH1911-2FC22","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH1911-2FC22","canonicalUrl":"https://aoctrl.com/siemens/3RH1911-2FC22","factsUrl":"https://aoctrl.com/api/mcp/products/3RH1911-2FC22","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS auxiliary switch block, 3RH1911-2FC22, 2 NO + 2 NC contacts, 10 A maximum, spring-loaded terminals, snap-on mounting, IP20 front protection.","salesMarkdown":"It snaps onto the front of SIRIUS contactor relays and power contactors in the S00 frame size, using spring-loaded terminals for the control and auxiliary circuits. ## Switching Ratings and Contact Reliability The switching current varies significantly with voltage: 6 A at 24 V, 2 A at 60 V, 1 A at 110 V, 0.3 A at 220 V, and 3 A at 400 V. For AC-15 duty at 690 V, the rated value is 1 A. The block also carries a 10 A rating at 24 V and 6 A at 125 V, 230 V, and 250 V. ## Mechanical and Environmental Specs Dimensions are 46 mm deep, 36.5 mm wide, and 37.5 mm high. The front protection class is IP20. Surge voltage resistance is rated at 6 kV, and insulation voltage with pollution degree 3 is 690 V. The spring-loaded terminals accept 2x (0.5 to 1.5 mm²) with ferrule and 2x (0.5 to 2.5 mm²) without, or 2x (20 to 14 AWG).","metaTitle":"Siemens 3RH1911-2FC22 Auxiliary Switch Block, 2 NO + 2 NC, 1","metaDescription":"Siemens SIRIUS 3RH1911-2FC22 auxiliary switch block, 2 NO + 2 NC, 10 A max. Phased-out; successor is 3RH2911-2FC22. Sourced to order against RFQ.","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":"2","lifecycle_stage":"current","During Operation":"-25 ... +60 °C","Lagging Switching":"2","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=488966&mlfb=3RH1911-2FC22","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RH1911-2FC22/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3RH1911-2FC22?","answer":"It is sourced through independent distribution and quoted to order against an RFQ. Availability and current pricing are confirmed at quote time."},{"question":"What are the key switching ratings for 3RH1911-2FC22?","answer":"Maximum is 10 A. At 24 V it switches 6 A; at 400 V, 3 A. For AC-15 at 690 V, the rating is 1 A."},{"question":"What is the contact configuration of 3RH1911-2FC22?","answer":"It has 2 normally open (NO) and 2 normally closed (NC) contacts."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH1911-2FC22","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/3RH1911-2FC22 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}}