{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH2911-2XF12-0KS1","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH2911-2XF12-0KS1","canonicalUrl":"https://aoctrl.com/siemens/3RH2911-2XF12-0KS1","factsUrl":"https://aoctrl.com/api/mcp/products/3RH2911-2XF12-0KS1","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS auxiliary switch, 3RH2911-2XF12-0KS1, solid-state compatible, 3-pole, 2 NC + 1 NO, spring-loaded terminals, snap-on size S00, IP20.","salesMarkdown":"The spring-loaded terminals accept 2x (0.5 to 2.5 mm²) without core-end processing or 2x (0.5 to 1.5 mm²) with ferrules, and the equivalent AWG range is 2x (20 to 14). The AC-15 rating of 1 A at 690 V tells you this switch can handle inductive loads — contactor coils, solenoid valves — at higher voltages without welding contacts. For DC switching, the 24 V rating is 10 A (resistive) or 6 A (likely inductive, per the at-24-V entry), dropping to 0.3 A at 220 V DC and 0.26 A at 600 V DC. That DC derating is steep: if you're switching a DC coil at 110 V, you're limited to 1 A. The mechanical life is 10 million switching cycles typical, so this block outlasts most contactors it rides on. ## Integration notes Snap-on mounting to a DIN rail, size S00. The block is 36 mm wide, 47.7 mm deep, and 41.5 mm tall — it shares the same footprint as the 3RH2 contactor relay series it's designed for. Two NC contacts are instantaneous (no leading or lagging delay), and one NO contact is also instantaneous. The leading contact count is zero, so all contacts switch simultaneously. Front-side protection is IP20 — suitable for enclosed panels, not for washdown environments.","metaTitle":"Siemens 3RH2911-2XF12-0KS1 SIRIUS Auxiliary Switch, 2NC+1NO,","metaDescription":"Siemens SIRIUS 3RH2911-2XF12-0KS1 solid-state compatible auxiliary switch, 2 NC + 1 NO, spring-loaded terminals, snap-on S00, IP20, AC-15 1 A at 690 V. Current production, sourced","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":"1","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/e7d465f63efa9b3db108500c4a868f7a.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1182789&mlfb=3RH2911-2XF12-0KS1","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RH2911-2XF12-0KS1/alternatives.json"},"ai":{"faq":[{"question":"What is the closest functional second-source or alternative?","answer":"The 3RH2422-1AB00 is a similar SIRIUS auxiliary switch block, but it uses screw terminals instead of spring-loaded terminals and may have a different contact configuration. The 3RH2911-2XF12-0KS1 is the spring-terminal, solid-state-compatible variant. For a drop-in replacement without rewiring, verify the contact arrangement and terminal type against your existing panel."},{"question":"What does the note 'with 3RH2' mean?","answer":"The note indicates this auxiliary switch block is designed to mount on 3RH2 contactor relays and the S00 frame power contactors. It shares the same snap-on footprint and wiring interface."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH2911-2XF12-0KS1","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/3RH2911-2XF12-0KS1 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}}