{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH2911-2XF22-0KS1","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH2911-2XF22-0KS1","canonicalUrl":"https://aoctrl.com/siemens/3RH2911-2XF22-0KS1","factsUrl":"https://aoctrl.com/api/mcp/products/3RH2911-2XF22-0KS1","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS auxiliary switch block, 3RH2911-2XF22-0KS1, 2 NO + 2 NC, solid-state compatible contacts, spring-loaded terminals, snap-on mounting, 10 A max, 690 V insulation.","salesMarkdown":"It provides 2 normally open and 2 normally closed contacts, with two of the NC contacts explicitly rated as solid-state compatible — meaning they can reliably switch low-level logic signals from a PLC or safety relay without the contact wetting issues that plague standard auxiliary contacts. The spring-loaded terminals accept 2x (0.5 to 1.5 mm²) with ferrule or 2x (0.5 to 2.5 mm²) solid, and the snap-on mounting clips directly onto the contactor without tools. ## Contact configuration and solid-state compatibility — the detail that matters The contact arrangement is 2 NO + 2 NC, with the NC contacts on current paths 1 and 4 designated as solid-state compatible (paths 11/12 and 41/42). The NO contacts on paths 23/24 and 33/34 are standard. The solid-state compatible designation means the contacts are gold-plated or otherwise treated to maintain a reliable connection at the low voltage and current levels typical of electronic inputs — 17 V, 1 mA is the stated reliability test condition, with a failure rate of 1 faulty switching per 100 million operations. This is critical when the auxiliary switch feeds a PLC input card or safety module rather than directly switching a contactor coil. ## Current ratings across voltage and duty The block carries a maximum thermal current of 10 A. For DC switching at 24 V it handles 6 A (resistive) or 10 A (rated value), dropping to 0.3 A at 220 V DC and 0.26 A at 600 V DC. For AC-15 control circuit duty at 690 V it is rated 1 A. The 10 A maximum is the thermal current — the actual switching capacity depends on voltage and load type, so match the specific curve for your application. ## Mechanical life and environmental limits Mechanical service life is typical 10 million switching cycles. The block measures 36 mm wide, 47.7 mm deep, and 41.5 mm high.","metaTitle":"Siemens 3RH2911-2XF22-0KS1 SIRIUS Auxiliary Switch, 2NO+2NC,","metaDescription":"Siemens SIRIUS auxiliary switch block 3RH2911-2XF22-0KS1 with 2 NO + 2 NC contacts, 10 A max, solid-state compatible. Spring-loaded terminals, snap-on mounting. Current production.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Note":"with 3RH2","Depth":"47.7 mm","Width":"36 mm","Height":"41.5 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","During Storage":"-55 ... +80 °C","Leading Contact":"0","lifecycle_stage":"current","During Operation":"-25 ... +60 °C","Fastening Method":"snap-on mounting","Lagging Switching":"0","Product Brand Name":"SIRIUS","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":"2","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 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":"spring-loaded 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":"https://cdn.aoctrl.com/cb144da5bc54595bd125e686724ec22a.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1435345&mlfb=3RH2911-2XF22-0KS1","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RH2911-2XF22-0KS1/alternatives.json"},"ai":{"faq":[{"question":"What are the solid-state compatible contacts on this auxiliary switch?","answer":"Two of the four contacts (the NC contacts on paths 11/12 and 41/42) are solid-state compatible, rated for reliable switching at 17 V, 1 mA with a failure rate of 1 per 100 million operations."},{"question":"What contactor is this auxiliary switch block designed for?","answer":"It is specified for use with the Siemens 3RT2448-6KB40-0KS0 contactor, front-mounted via snap-on clips."},{"question":"Where can I buy 3RH2911-2XF22-0KS1 and get current pricing?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution — availability and current pricing are confirmed at quote time."},{"question":"What is the AC-15 rating at 690 V for this switch?","answer":"The AC-15 control circuit rating at 690 V is 1 A."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH2911-2XF22-0KS1","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/3RH2911-2XF22-0KS1 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}}