{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH1911-1HA12-ZW97","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH1911-1HA12-ZW97","canonicalUrl":"https://aoctrl.com/siemens/3RH1911-1HA12-ZW97","factsUrl":"https://aoctrl.com/api/mcp/products/3RH1911-1HA12-ZW97","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RH1911-1HA12-ZW97 auxiliary switch block, 22 E 1 NO + 2 NC, screw-type terminals, snap-on mounting, 10 A max, IP20 front.","salesMarkdown":"The Siemens SIRIUS 3RH1911-1HA12-ZW97 is a 4-pole auxiliary switch block with a 22 E contact configuration — 1 normally open and 2 normally closed — intended for use with contactor relays and power contactors. This block carries a maximum thermal current of 10 A, but the real-world switching capacity depends on the voltage and duty. For DC-13 at 24 V it handles 6 A; at 110 V it drops to 1 A; at 220 V it's 0.3 A. The AC-15 rating at 690 V is 1 A. That means for a 24 VDC pilot circuit you get the full 6 A, but for a 220 VDC interposing relay you're limited to 0.3 A — a common trap when reusing this block across different control voltages. This is a phased-out product. The official successor is the SIRIUS 3RH2 series. If you have a BOM line frozen on the 3RH1911-1HA12-ZW97, the 3RH2 is the drop-in replacement path — verify the terminal arrangement and contact configuration against your panel layout before committing. The block is 41.5 mm deep, 36.5 mm wide, and 37.5 mm high — it fits the S00 contactor footprint. Screw terminals accept 2x (0.5 to 1.5 mm²) or 2x (0.75 to 2.5 mm²) with core-end processing, or 2x (20 to 16) and 2x (18 to 14) AWG. Mechanical service life is 10 million switching cycles typical. Surge voltage resistance is 6 kV, and the insulation voltage at pollution degree 3 is 690 V AC.","metaTitle":"Siemens 3RH1911-1HA12-ZW97 Auxiliary Switch Block, 10 A","metaDescription":"Siemens SIRIUS 3RH1911-1HA12-ZW97 auxiliary switch block, 22E 1NO+2NC, screw terminals, snap-on. Phased-out; successor 3RH2. Sourced to order. Cited 10 A max.","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=238147&mlfb=3RH1911-1HA12-ZW97","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RH1911-1HA12-ZW97/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy the 3RH1911-1HA12-ZW97?","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 maximum switching current for this auxiliary switch block?","answer":"The maximum thermal current is 10 A, but the switching capacity varies by voltage and duty. For DC-13 at 24 V it handles 6 A; at 110 V it drops to 1 A; at 220 V it is 0.3 A. The AC-15 rating at 690 V is 1 A."},{"question":"Does the 3RH1911-1HA12-ZW97 mount on a DIN rail?","answer":"Yes, it uses snap-on mounting onto a 35 mm DIN rail. Dimensions are 41.5 mm deep, 36.5 mm wide, and 37.5 mm high."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH1911-1HA12-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/3RH1911-1HA12-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}}