{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH1911-1FA11-ZW97","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH1911-1FA11-ZW97","canonicalUrl":"https://aoctrl.com/siemens/3RH1911-1FA11-ZW97","factsUrl":"https://aoctrl.com/api/mcp/products/3RH1911-1FA11-ZW97","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS auxiliary switch block, 3RH1911-1FA11-ZW97, 1 NO + 1 NC, screw terminals, snap-on mounting for size S00, 10 A maximum, IP20.","salesMarkdown":"The Siemens SIRIUS 3RH1911-1FA11-ZW97 is an auxiliary switch block — a 1 NO + 1 NC contact block that mounts directly onto SIRIUS contactor relays and power contactors of size S00. It is designed for switching auxiliary circuits in control panels, providing feedback or interlock signals from the main contactor. Rated for a maximum of 10 A, it carries a surge voltage resistance of 6 kV and an insulation voltage of 690 V AC at pollution degree 3 — figures that confirm it is built for industrial control environments where transient overvoltages and dust are routine. Snap-on mounting onto 35 mm DIN rail (or directly onto the contactor) means panel integration is tool-less and the block occupies the same width as the S00 contactor — 36.5 mm — so it does not steal additional rail space. The contact ratings are given per voltage: at 24 V it switches 6 A (AC-15/DC-13), at 230 V it switches 6 A, and at 400 V it switches 3 A. These are the values that govern real-world auxiliary circuit duty — a 10 A maximum does not mean you can pull 10 A at 400 V. Use the voltage-specific figure for your control voltage. Mechanical service life is 10 million switching cycles typical. Contact reliability is rated at 1 faulty switching per 100 million operations (at 17 V, 1 mA) — a strong low-level switching capability that matters for PLC inputs and solid-state loads. Screw-type terminals accept 2x (0.5…1.5 mm²) or 2x (0.75…2.5 mm²) with core-end processing, or 2x (20…16) and 2x (18…14) AWG.","metaTitle":"Siemens 3RH1911-1FA11-ZW97 Auxiliary Switch Block, 10 A, SIR","metaDescription":"Siemens SIRIUS 3RH1911-1FA11-ZW97 auxiliary switch block, 1 NO + 1 NC, screw terminals, snap-on mounting, 10 A max, IP20. Phased-out; successor 3RH2. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Note":"with 3RH1","Depth":"41.5 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","During Storage":"-55 ... +80 °C","lifecycle_stage":"current","During Operation":"-25 ... +60 °C","Fastening Method":"snap-on mounting","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), 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 cables 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","Type Of Electrical Connection For Auxiliary And Control Circuit":"screw-type 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":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=248236&mlfb=3RH1911-1FA11-ZW97","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RH1911-1FA11-ZW97/alternatives.json"},"ai":{"faq":[{"question":"What is the closest functional second-source for 3RH1911-1FA11-ZW97?","answer":"The official successor is the SIRIUS 3RH2 series. The 3RT5056-8AP38-0PR0 is a power contactor, not a direct auxiliary-switch replacement — it does not share the same form factor or contact configuration."},{"question":"What does the note 'with 3RH1' mean?","answer":"The note indicates this auxiliary switch block is designed to be used with SIRIUS 3RH1 contactor relays and power contactors of size S00."},{"question":"What is the depth of 3RH1911-1FA11-ZW97?","answer":"The depth is 41.5 mm, width 36.5 mm, height 37.5 mm — it mounts flush with the S00 contactor footprint."},{"question":"Will 3RH1911-1FA11-ZW97 drop into a panel specified around 3RT5056-8AP38-0PR0?","answer":"No. The 3RT5056-8AP38-0PR0 is a power contactor of a different frame size; the auxiliary block is sized for S00 contactors and will not mechanically fit or electrically match without rewiring."},{"question":"What compliance documentation does this brand provide?","answer":"As a Siemens SIRIUS component, it carries the standard industrial approvals (IEC, UL, CSA, CE) typical for this series. Specific RoHS/REACH declarations are available on request."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH1911-1FA11-ZW97","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/3RH1911-1FA11-ZW97 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}}