{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH2911-2DA02","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH2911-2DA02","canonicalUrl":"https://aoctrl.com/siemens/3RH2911-2DA02","factsUrl":"https://aoctrl.com/api/mcp/products/3RH2911-2DA02","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RH2911-2DA02, lateral auxiliary switch block for 3RT2 contactors, 2 NC contacts, 10 A, spring-loaded terminals, snap-on mounting.","salesMarkdown":"The Siemens 3RH2911-2DA02 is a lateral auxiliary switch block from the SIRIUS family, designed specifically to snap onto 3RT2 contactors. It carries two normally-closed (NC) contacts, rated for a maximum thermal current of 10 A, and uses spring-loaded terminals for the wiring connections. The 10 A maximum thermal current (Ith) is the continuous current the contacts can carry, but the actual switching capacity depends on the voltage and load type. For AC-15 control-circuit duty (solenoids, contactor coils), the rated operational current drops to 1 A at 690 V. At 24 V it handles 10 A, at 110 V it's 3 A, and at 230 V it's 6 A — so at line voltage you've still got solid margin for pilot-duty loads. The 6 kV rated surge voltage resistance and 690 V insulation voltage (pollution degree 3) mean this block is built for the industrial panel environment where transients from motor starting are common. ## Snap-on integration with 3RT2 contactors This block mounts laterally on the left or right side of a 3RT2 contactor via snap-on fastening. The 10 mm width means it adds minimal DIN-rail real estate — about the width of a standard terminal block. Wiring is via spring-loaded terminals accepting 2x (0.5…1.5 mm²) with ferrules or 2x (0.5…2.5 mm²) solid. Strip length for the spring clamp is the usual 8–10 mm; no screwdriver needed for termination.","metaTitle":"Siemens 3RH2911-2DA02 SIRIUS Auxiliary Switch, 2 NC, 10 A, S","metaDescription":"Siemens 3RH2911-2DA02 SIRIUS auxiliary switch block, lateral mount for 3RT2 contactors. 2 NC contacts rated 10 A, spring-loaded terminals, snap-on DIN rail. Current lifecycle stage","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"Note":"with 3RT2","Depth":"66 mm","Width":"10 mm","title":"3RH2911-2DA02","Height":"64.8 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, lateral, 2 NC, on the left: 41/42, 51/52, on the right: 21/22, 31/32, current path: 1 NC, 1 NC, spring-loaded terminal, for contactors 3RT2.1","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 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":"0","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 (Operating 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":"$6.48","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/20a27485f34b120662c7f071f40f516b.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=219577&mlfb=3RH2911-2DA02"},"ai":{"faq":[{"question":"What contactors does the 3RH2911-2DA02 fit?","answer":"It is designed for the 3RT2 series of contactors, mounting laterally on either side via snap-on fastening."},{"question":"What are the contact ratings for the 3RH2911-2DA02?","answer":"Maximum thermal current is 10 A. AC-15 rated operational current is 1 A at 690 V. At 24 V it switches 10 A, at 110 V it switches 3 A, at 230 V it switches 6 A, and at 400 V it switches 3 A."},{"question":"Where can I buy the 3RH2911-2DA02 and get a price?","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":"Will the 3RH2911-2DA02 drop into a panel specified around the 3RT5056-8AP38-0PR0 without rewiring?","answer":"No — the 3RH2911-2DA02 is a lateral auxiliary switch for 3RT2 contactors, while the 3RT5056-8AP38-0PR0 is a different contactor frame. They are not mechanically interchangeable without changing the base contactor."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH2911-2DA02","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/3RH2911-2DA02 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}}