{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH2911-2HA10","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH2911-2HA10","canonicalUrl":"https://aoctrl.com/siemens/3RH2911-2HA10","factsUrl":"https://aoctrl.com/api/mcp/products/3RH2911-2HA10","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS auxiliary switch block, 1 NO contact, spring-loaded terminal, snap-on mounting for 3RT2 contactors and 3RH2 contactor relays, rated 10 A.","salesMarkdown":"The Siemens 3RH2911-2HA10 is a front-mounted auxiliary switch block from the SIRIUS family, carrying a single normally-open (1 NO) contact. It snaps onto 3RT2 power contactors and 3RH2 contactor relays — the note \"with 3RH2\" confirms the intended mating frame. Spring-loaded terminals accept 2x (0.5 to 1.5 mm²) with ferrule or 2x (0.5 to 2.5 mm²) solid, or 2x (20 to 14 AWG). The contact is rated 10 A maximum, but the real switching capacity depends on voltage and load type. At 24 V DC it handles 6 A; at 110 V DC it drops to 1 A; at 220 V DC it's 0.3 A. For AC-15 inductive control-circuit duty at 690 V, the rated current is 1 A — that's the figure to use when switching contactor coils or solenoid valves on a 690 V line. The AC-15 ratings at lower voltages are not listed here, but the DC inductive load table (at 24 V rated value: 10 A; 60 V: 4.7 A; 110 V: 3 A; 220 V: 1.2 A; 440 V: 0.5 A; 600 V: 0.26 A) gives a clear derating curve. If your load is a DC solenoid or brake coil, use the rated-value column, not the maximum. Snap-on mounting — no tools, no screws. The block is 36 mm wide, 47.7 mm deep, 41.5 mm high. It mounts on the front of the contactor or relay, so it adds depth to the assembly but does not widen the DIN-rail footprint. Verify clearance in front of the contactor before laying out the panel. ## Environmental and electrical endurance Insulation voltage is 690 V at pollution degree 3, surge withstand 6 kV. Mechanical life is 10 million switching cycles typical. If you're switching PLC inputs or similar low-energy loads, this contact will stay clean. Lifecycle stage is marked as current.","metaTitle":"Siemens 3RH2911-2HA10 SIRIUS Auxiliary Switch, 1 NO, Spring","metaDescription":"Siemens 3RH2911-2HA10 SIRIUS auxiliary switch block, 1 NO contact, 10 A rated, spring-loaded terminals. Snap-on for 3RT2/3RH2 contactors. IP20 front. Quoted on request.","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","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","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":"1","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":"$3.40","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=420675&mlfb=3RH2911-2HA10","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RH2911-2HA10/alternatives.json"},"ai":{"faq":[{"question":"What is 3RH2911-2HA10's listed note (with 3RH2) on this component line?","answer":"The note \"with 3RH2\" indicates the auxiliary switch is designed to mount on 3RH2 contactor relays (and 3RT2 contactors). It is not a standalone device."},{"question":"What is 3RH2911-2HA10's listed depth (47.7 mm) on this component line?","answer":"The depth is 47.7 mm, measured from the front of the contactor or relay face. This adds to the overall assembly depth but does not increase the DIN-rail width."},{"question":"What compliance documentation does this brand provide for 3RH2911-2HA10 (RoHS, REACH, UL, IEC)?","answer":"The SIRIUS series carries CE marking and UL/CSA recognition per Siemens standard declarations. Specific certificates for this order code are available on request — the evidence does not list individual approvals here."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH2911-2HA10","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/3RH2911-2HA10 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}}