{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH2911-1HA12-ZX95","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH2911-1HA12-ZX95","canonicalUrl":"https://aoctrl.com/siemens/3RH2911-1HA12-ZX95","factsUrl":"https://aoctrl.com/api/mcp/products/3RH2911-1HA12-ZX95","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RH2911-1HA12-ZX95 auxiliary switch, 1 NO + 0 NC, snap-on front mount for contactor sizes S00-S3, rated 10 A at 24 V, IP20 front.","salesMarkdown":"## Auxiliary switch for SIRIUS contactor relays and power contactors The Siemens 3RH2911-1HA12-ZX95 is a SIRIUS auxiliary switch designed for snapping onto the front of contactor relays and power contactors in sizes S00, S0, S2, and S3. ## Rated currents and contact reliability across voltage levels The switch also carries a mirror contact feature per IEC 60947-4-1 when used with the 3RT2 contactor, enabling fail-safe feedback in safety circuits. ## Mounting, wiring, and environmental limits Dimensions are 43.7 mm deep, 36 mm wide, and 37.5 mm high, fitting within the contactor envelope without increasing panel depth.","metaTitle":"Siemens 3RH2911-1HA12-ZX95 SIRIUS Auxiliary Switch","metaDescription":"Siemens SIRIUS auxiliary switch 3RH2911-1HA12-ZX95, rated 10 A at 24 V. Snap-on front mount for contactor sizes S00-S3. IP20 front, 6 kV surge.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"Depth":"43.7 mm","Width":"36 mm","title":"3RH2911-1HA12-ZX95","Height":"37.5 mm","at 24 V":"6 A","at 48 V":"2 A","at 60 V":"2 A","at 110 V":"1 A","at 125 V":"0.9 A","at 220 V":"0.3 A","at 230 V":"6 A","at 250 V":"0.3 A","at 400 V":"3 A","description":"auxiliary switch, on the front, 1 NO + 2 NC,.1/.2,.1/.2,.3/.4, --/--, current path: 1 NC, 1 NC, 1 NO, --, screw terminal, for contactors 3RT2 and contactor relays 3RH2, reusable packaging, pack = 351 units","During Storage":"-55 ... +80 °C","Leading Contact":"0","lifecycle_stage":"current","During Operation":"-25 ... +60 °C","Fastening Method":"snap-on mounting","Product Category":"Auxiliary switch","Lagging Switching":"0","Size Of Contactor":"S00, S0, S2, S3","Solid Or Stranded":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)","Product Brand Name":"SIRIUS","Product Designation":"auxiliary switch","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","Design Of The Product":"for snapping onto the front","Instantaneous Contact":"1","Substance Prohibitance (Date)":"10/01/2009","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)","Finely Stranded With Core End Processing":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)","Contact Reliability Of Auxiliary Contacts":"1 faulty switching per 100 million (17 V, 1 mA)","mirror contact according to IEC 60947-4-1":"Yes; with 3RT2","operational current at AC-15 at 690 V rated value":"1 A","Mechanical Service Life (Operating Cycles) Typical":"10 000 000","operational current of auxiliary contacts at AC-12 maximum":"10 A","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","number of CO contacts of auxiliary contacts instantaneous contact":"0","AWG number as coded connectable conductor cross section for auxiliary contacts":"20 ... 14"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/4df1e525cfa83a5b61e056d0d1c4186e.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=482381&mlfb=3RH2911-1HA12-ZX95"},"ai":{"faq":[{"question":"What contactor sizes does this auxiliary switch fit?","answer":"It snaps onto the front of SIRIUS contactor sizes S00, S0, S2, and S3, covering both contactor relays and power contactors."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH2911-1HA12-ZX95","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/3RH2911-1HA12-ZX95 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T19:47:38.189Z","lastPublished":"2026-07-22T19:47:38.189Z","indexable":true}}