{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH1911-1FA20-ZW96","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH1911-1FA20-ZW96","canonicalUrl":"https://aoctrl.com/siemens/3RH1911-1FA20-ZW96","factsUrl":"https://aoctrl.com/api/mcp/products/3RH1911-1FA20-ZW96","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS auxiliary switch block, 2 NO contacts, screw-type terminals, snap-on mounting for size S00 contactors, 10 A maximum, IP20 front, 41.5 mm depth.","salesMarkdown":"It uses screw-type terminals for the auxiliary and control circuits, accepting 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. Rated for a maximum of 10 A, the contact ratings vary by voltage and duty: at 24 V it handles 6 A (10 A rated value), at 60 V it handles 2 A (4.7 A rated value), at 110 V it handles 1 A (3 A rated value), at 220 V it handles 0.3 A (1.2 A rated value), at 400 V it handles 3 A (0.5 A rated value), and at 600 V it handles 0.26 A rated value. The AC-15 rating at 690 V is 1 A. These are the switching limits for the auxiliary contacts — match your load voltage and current to the appropriate row. Mechanical service life is typical 10,000,000 switching cycles, with contact reliability rated at 1 faulty switching per 100 million operations at 17 V, 1 mA — a solid figure for low-energy signal circuits where oxide films can cause intermittent opens. This part is a phased-out product. The official successor is the SIRIUS 3RH2 series. For new designs or BOM replacements, plan to qualify the 3RH2 equivalent for your specific contactor frame and wiring scheme. Snap-on mounting directly onto the front of a size S00 contactor — no DIN rail required for the block itself, though the contactor typically mounts on a 35 mm rail. Dimensions are 36.5 mm wide, 37.5 mm high, and 41.5 mm deep, so it adds minimal depth to the contactor assembly. The 2 NO contacts follow EN 50005 terminal numbering.","metaTitle":"Siemens 3RH1911-1FA20-ZW96 Auxiliary Switch Block, 2 NO, S00","metaDescription":"Siemens SIRIUS 3RH1911-1FA20-ZW96 auxiliary switch block, 2 NO contacts, screw terminals, snap-on for S00 contactors. Phased-out; successor is SIRIUS 3RH2. Sourced 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":"2","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=429044&mlfb=3RH1911-1FA20-ZW96","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RH1911-1FA20-ZW96/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3RH1911-1FA20-ZW96?","answer":"This part is sourced to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — no stock figures are carried on this listing."},{"question":"What replaces 3RH1911-1FA20-ZW96?","answer":"The official successor is the SIRIUS 3RH2 series. For a direct functional match, the 3RH2122-1WB40 is a coupling relay with 2 NO contacts, screw terminals, and similar contact ratings (10 A at 24 V, 3 A at 400 V, etc.), but it has a larger footprint (73 mm depth, 45 mm width) and mounts on a 35 mm DIN rail rather than snapping onto an S00 contactor. Verify mechanical fit for your panel layout."},{"question":"Will 3RH1911-1FA20-ZW96 drop into a panel designed for 3RH2122-1WB40?","answer":"No — the 3RH1911-1FA20-ZW96 snaps onto an S00 contactor, while the 3RH2122-1WB40 mounts on a 35 mm DIN rail and has a larger body (73 mm vs 41.5 mm depth, 45 mm vs 36.5 mm width). The wiring pattern and terminal numbering differ. A panel designed for the 3RH2122 would need rework to accept the 3RH1911."},{"question":"What is the contact reliability of 3RH1911-1FA20-ZW96?","answer":"Rated at 1 faulty switching per 100 million operations at 17 V, 1 mA — suitable for low-energy signal circuits where contact oxidation can cause problems."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH1911-1FA20-ZW96","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/3RH1911-1FA20-ZW96 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}}