{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH2911-2GA40-ZW97","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH2911-2GA40-ZW97","canonicalUrl":"https://aoctrl.com/siemens/3RH2911-2GA40-ZW97","factsUrl":"https://aoctrl.com/api/mcp/products/3RH2911-2GA40-ZW97","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS auxiliary switch block, 3RH2911-2GA40-ZW97, 4 NO, 10 A, spring-loaded terminals, snap-on mounting, IP20.","salesMarkdown":"The Siemens SIRIUS 3RH2911-2GA40-ZW97 is a front-mounted auxiliary switch block for contactor relays, specifically the 3RH2140 and 3RH2440 frames per EN 50011. It provides four normally-open instantaneous contacts — terminals 53/54, 63/64, 73/74, and 83/84 — in a single 36 mm wide package that snaps onto a DIN rail. The spring-loaded terminals accept 2x (0.5 to 2.5 mm²) without ferrules or 2x (0.5 to 1.5 mm²) with core-end processing, and AWG 20 to 14 for the auxiliary circuit. The AC-15 switching capacity at 690 V is 1 A — that's the inductive load rating for solenoid or contactor coils. For resistive loads at 24 V, the rated operational current is 10 A; at 230/250 V AC it's 6 A. The surge voltage withstand is 6 kV, and contact reliability is specified at 1 faulty switching per 100 million operations at 17 V, 1 mA — meaning it handles low-level PLC signals without intermittent opens. The 36 mm width occupies one standard modular device position. Depth is 47.7 mm, height 41.5 mm. The IP20 front protection means it's suitable for enclosed control panels where no washdown or dust ingress is expected.","metaTitle":"Siemens 3RH2911-2GA40-ZW97 SIRIUS Auxiliary Switch, 4 NO, 10","metaDescription":"Siemens SIRIUS 3RH2911-2GA40-ZW97 auxiliary switch block, 4 NO contacts, 10 A thermal, spring-loaded terminals, snap-on mounting, IP20. Current production. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"Note":"with 3RH2","Depth":"47.7 mm","Width":"36 mm","title":"3RH2911-2GA40-ZW97","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","description":"auxiliary switch, on the front, 4 NO, 53/54, 63/64, 73/74, 83/84, current path: 1 NO, 1 NO, 1 NO, 1 NO, spring-loaded terminal, physically coded, only with contactor relays 3RH2140 and 3RH2440 combinable (according to EN 50011), multi-unit packaging, pack = 100 units","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","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":"4","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,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/12c9b2d44963b798a728d57534e3118d.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=350645&mlfb=3RH2911-2GA40-ZW97"},"ai":{"faq":[{"question":"What contactor relays is this auxiliary switch compatible with?","answer":"It is physically coded and combinable only with Siemens SIRIUS contactor relays 3RH2140 and 3RH2440, per EN 50011."},{"question":"What are the key electrical ratings?","answer":"Thermal current 10 A; rated insulation voltage 690 V AC at pollution degree 3; AC-15 rating 1 A at 690 V; surge voltage withstand 6 kV; contact reliability 1 fault per 100 million operations at 17 V, 1 mA."},{"question":"What type of terminals does it use?","answer":"Spring-loaded terminals accepting 2x (0.5 to 2.5 mm²) without ferrules or 2x (0.5 to 1.5 mm²) with ferrules, and AWG 20 to 14."},{"question":"What is the mechanical service life?","answer":"10 million switching cycles typical."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH2911-2GA40-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/3RH2911-2GA40-ZW97 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}