{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH2911-1HA01-ZX95","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH2911-1HA01-ZX95","canonicalUrl":"https://aoctrl.com/siemens/3RH2911-1HA01-ZX95","factsUrl":"https://aoctrl.com/api/mcp/products/3RH2911-1HA01-ZX95","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RH2911-1HA01-ZX95 auxiliary switch, 1 NC, 10 A maximum, screw terminals, snap-on mounting, IP20 front.","salesMarkdown":"## Auxiliary switch for 3RT2 contactors and 3RH2 relays The 3RH2911-1HA01-ZX95 is a front-mounted auxiliary switch block for Siemens SIRIUS 3RT2 contactors and 3RH2 contactor relays, providing one normally-closed (NC) contact path. It snaps onto the front of the contactor or relay without additional hardware, adding a spare NC pole for status feedback or interlocking in the same DIN-rail footprint. ## Switching capacity across the voltage range The auxiliary contact is rated for a maximum of 10 A, with AC-15 rated operational currents specified per voltage: 10 A at 24 V, 6 A at 125/230/250 V, 3 A at 400 V, and 0.5 A at 440 V. At higher control voltages the current capability drops significantly — 0.3 A at 220 V and 0.26 A at 600 V — so the contact must be derated when switching 600 V control circuits. The insulation rating is 690 V AC at pollution degree 3, with a surge voltage withstand of 6 kV, matching the typical isolation requirements for industrial control panels. ## Mechanical endurance and contact reliability Rated for 10 million mechanical switching cycles, this auxiliary block outlasts most contactor main poles in cyclic service — it is not the wear item in the assembly. Contact reliability is specified at one faulty switching per 100 million operations at 17 V, 1 mA, meaning it handles low-energy PLC-level signals without the oxide-film problems that plague power contacts at dry-circuit levels. ## Wiring and environmental limits Screw-type terminals accept two conductors per clamp: 2x (0.5 to 1.5 mm²) or 2x (0.75 to 2.5 mm²), with equivalent AWG ranges of 2x (20 to 16) and 2x (18 to 14). Operating temperature range is -25 to +60 °C, storage from -55 to +80 °C, and the front face carries IP20 protection — suitable for enclosed panel mounting but not for exposed washdown areas.","metaTitle":"Siemens 3RH2911-1HA01-ZX95 Auxiliary Switch, 1 NC, 10 A","metaDescription":"Siemens 3RH2911-1HA01-ZX95 SIRIUS auxiliary switch, 1 NC, 10 A max, IP20 front, snap-on DIN rail. Active production, sourced to order. Request a quote.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"Note":"with 3RH2","Depth":"43.7 mm","Width":"36 mm","title":"3RH2911-1HA01-ZX95","Height":"37.5 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, 1 NC,.1/.2, --/--, --/--, --/--, current path: 1 NC, --, --, --, 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","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), 2x (0.75 ... 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 ... 16), 2x (18 ... 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":"screw-type 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/4eea94dfbbd03015b4b793897d6a030d.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=225448&mlfb=3RH2911-1HA01-ZX95"},"ai":{"faq":[{"question":"How can I get pricing and availability for 3RH2911-1HA01-ZX95?","answer":"Submit an RFQ through this listing. The part is sourced to order from authorized distribution; a quote with current price and lead time is provided for your requested quantity."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH2911-1HA01-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/3RH2911-1HA01-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}}