{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH2911-2GA22-ZW96","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH2911-2GA22-ZW96","canonicalUrl":"https://aoctrl.com/siemens/3RH2911-2GA22-ZW96","factsUrl":"https://aoctrl.com/api/mcp/products/3RH2911-2GA22-ZW96","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS auxiliary switch block, 3RH2911-2GA22-ZW96, 2 NO + 2 NC contacts, 10 A maximum, spring-loaded terminals, snap-on mounting.","salesMarkdown":"The Siemens 3RH2911-2GA22-ZW96 is a front-mounted auxiliary switch block for the SIRIUS contactor relay line, specifically designed to mate with the 3RH2140 and 3RH2440 contactor relays per EN 50011. It provides 2 normally-open and 2 normally-closed instantaneous contacts, wired to terminals 53/54, 61/62, 71/72, and 83/84, giving you four discrete signal paths off the relay's armature position. Snap it onto a DIN rail — the fastening method is snap-on mounting, so it clips into the same rail the contactor relay sits on, no tools needed for the mechanical install. The spring-loaded terminals accept 2x (0.5 to 2.5 mm²) solid wire or 2x (0.5 to 1.5 mm²) with ferrules, and the equivalent AWG range is 2x (20 to 14). The headline maximum is 10 A, but that's a thermal current rating — the real switching capacity depends on the voltage and load type. At 24 V it handles 6 A; at 230 V it still carries 6 A; at 400 V it drops to 3 A. For DC switching, the numbers tighten: 24 V at 10 A, 60 V at 4.7 A, 110 V at 3 A, 220 V at 1.2 A, and 600 V at just 0.26 A. The AC-15 rating at 690 V is 1 A — that's the inductive load curve for solenoid valves and contactor coils at higher voltages. Mechanical service life is 10 million switching cycles typical, so this block outlasts most contactor relays it rides on. Surge voltage resistance is 6 kV, and insulation voltage at pollution degree 3 is 690 V AC. ## Wiring and integration notes The spring-loaded terminals are physically coded — the housing has a keying feature that prevents inserting the wrong terminal type. Wire preparation is standard: strip to 8 mm, insert solid or ferruled stranded, and the cage clamps automatically. No screwdriver needed for the connection, which speeds up panel wiring on repetitive builds. Dimensions are compact: 36 mm wide, 41.5 mm tall, 47.7 mm deep. It sits flush on the front of the contactor relay, so it doesn't increase the panel depth beyond the relay's own envelope. The 2 NO + 2 NC contact arrangement follows EN 50011 for auxiliary contact blocks, meaning the terminal numbering is standardized across the SIRIUS family.","metaTitle":"Siemens 3RH2911-2GA22-ZW96 SIRIUS Auxiliary Switch, 2NO+2NC,","metaDescription":"Siemens SIRIUS auxiliary switch block 3RH2911-2GA22-ZW96 for contactor relays. 2 NO + 2 NC contacts, 10 A max, spring-loaded terminals, snap-on DIN rail mount. Current lifecycle st","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":"3RH2911-2GA22-ZW96","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, 2 NO + 2 NC, 53/54, 61/62, 71/72, 83/84, current path: 1 NO, 1 NC, 1 NC, 1 NO, spring-loaded terminal, physically coded, only with contactor relays 3RH2140 and 3RH2440 combinable (according to EN 50011), multi-unit packaging, pack = 196 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":"2","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/ff59feb8a746fc832419319214882d56.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=308476&mlfb=3RH2911-2GA22-ZW96"},"ai":{"faq":[{"question":"What is the closest functional alternative if I can't get this exact order code?","answer":"The 3RH2911-2GA22-ZW96 is a front-mounted auxiliary switch block specifically keyed for 3RH2140 and 3RH2440 contactor relays. A different auxiliary switch from the SIRIUS family, such as one from the 3RH29 series, may fit mechanically but the physical coding differs — verify the contact arrangement and terminal numbering before substituting."},{"question":"What compliance documentation is available for this part?","answer":"The part carries the SIRIUS brand and is designed to EN 50011 for auxiliary contact blocks. Standard Siemens documentation includes the datasheet and declaration of conformity; specific RoHS, REACH, and UL status should be confirmed from the manufacturer's documentation for this order code."},{"question":"What is the maximum current this switch can handle?","answer":"The maximum thermal current rating is 10 A. However, the actual switching capacity depends on voltage and load type — for example, 6 A at 230 V AC, 10 A at 24 V DC, and 1 A at 690 V AC-15 inductive load."},{"question":"Will this fit a panel designed for a 3RT1015-1BB42 contactor?","answer":"No — this auxiliary switch block is specifically designed for 3RH2140 and 3RH2440 contactor relays, not for the 3RT1015 series. The physical coding and mounting interface differ."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH2911-2GA22-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/3RH2911-2GA22-ZW96 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}}