{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH1911-1FA20-ZW97","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH1911-1FA20-ZW97","canonicalUrl":"https://aoctrl.com/siemens/3RH1911-1FA20-ZW97","factsUrl":"https://aoctrl.com/api/mcp/products/3RH1911-1FA20-ZW97","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS auxiliary switch block, 3RH1911-1FA20-ZW97, 2 NO contacts, screw terminals, snap-on mounting for size S00, 10 A maximum.","salesMarkdown":"It uses screw-type terminals and accepts 2x (0.5 to 1.5 mm²) or 2x (0.75 to 2.5 mm²) conductors with core-end processing. ## Contact ratings — what they mean on the line The contacts are rated for a maximum of 10 A, with voltage-dependent switching capacity: 6 A at 24 V, 6 A at 230 V, and 3 A at 400 V. For DC control circuits the ratings are 10 A at 24 V, 4.7 A at 60 V, 3 A at 110 V, and 1.2 A at 220 V. The AC-15 rating at 690 V is 1 A — this is the inductive load rating for contactor coils and solenoid valves at higher line voltages. The insulation voltage is 690 V with pollution degree 3, and surge voltage resistance is 6 kV, so it's suitable for standard industrial panel environments without additional isolation. ## Panel integration — what fits where The block measures 36.5 mm wide, 37.5 mm high, and 41.5 mm deep — compact enough to stack alongside other S00 auxiliaries on a DIN rail. Snap-on mounting means no tools for installation; it clips directly onto the contactor or relay. Front IP20 rating protects against finger contact during panel access. ## Mechanical endurance and contact reliability Mechanical service life is typical 10 million switching cycles. For short-circuit protection, the design assumes a gL/gG fuse rated up to 10 A.","metaTitle":"Siemens 3RH1911-1FA20-ZW97 Auxiliary Switch Block, 2 NO, 10","metaDescription":"Siemens SIRIUS 3RH1911-1FA20-ZW97 auxiliary switch block, 2 NO contacts, 10 A max, 690 V insulation, snap-on mounting. Phased-out — sourced to order against RFQ.","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=202032&mlfb=3RH1911-1FA20-ZW97","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RH1911-1FA20-ZW97/alternatives.json"},"ai":{"faq":[{"question":"What replaces 3RH1911-1FA20-ZW97?","answer":"The SIRIUS 3RH2 series is the direct replacement. The 3RH2122-1WB40 is a functional peer with 2 NO contacts, screw terminals, and similar contact ratings — but it has a different footprint (73 mm deep, 45 mm wide) and requires screw-and-snap-on mounting to a 35 mm DIN rail, so panel layout should be verified before swapping."},{"question":"Where can I buy 3RH1911-1FA20-ZW97?","answer":"This part is sourced to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"What are the key contact ratings for 3RH1911-1FA20-ZW97?","answer":"Maximum contact current is 10 A. At 24 V AC it switches 6 A; at 230 V AC it switches 6 A; at 400 V AC it switches 3 A. For DC control circuits, it handles 10 A at 24 V and 1.2 A at 220 V. The AC-15 rating at 690 V is 1 A."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH1911-1FA20-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/3RH1911-1FA20-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}}