{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH2911-1DA02","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH2911-1DA02","canonicalUrl":"https://aoctrl.com/siemens/3RH2911-1DA02","factsUrl":"https://aoctrl.com/api/mcp/products/3RH2911-1DA02","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RH2911-1DA02 auxiliary switch, size S00, first laterally mountable, snap-on DIN rail, 10 mm width, 66 mm depth, 57.4 mm height, IP20 front.","salesMarkdown":"## S00 auxiliary switch for contactor relay and power contactor duty The Siemens 3RH2911-1DA02 is a SIRIUS S00 auxiliary switch designed for lateral snap-on mounting alongside contactor relays and power contactors in the S00 frame size. At 10 mm wide, it occupies one slot on the DIN rail — the narrowest footprint in the SIRIUS auxiliary range — so it fits into densely packed panels where every millimeter matters for gland-plate fill factor. Rated operational current at 24 V is 6 A; at 230 V it delivers 6 A; at 400 V it switches 3 A. The AC-15 rated values for contactor relay duty are higher — 10 A at 24 V, 3 A at 110 V, 1.2 A at 220 V — reflecting the inductive load switching capability for solenoid and contactor coils. ## Contact reliability and mirror contact compliance The auxiliary contacts are rated for 1 faulty switching per 100 million operations at 17 V, 1 mA — this is the dry-circuit reliability floor for PLC-level signals where oxidation on unmated contacts can cause intermittent faults. The switch also qualifies as a mirror contact per IEC 60947-4-1 when used with 3RT2 contactors, meaning the NC position mechanically reflects the main contact state for safety circuit isolation. Surge voltage resistance is 6 kV, covering the impulse voltage withstand for 400 VAC industrial networks per IEC 60947-1 overvoltage category III. This matters when the switch is wired in a safety chain that must survive transient events without false triggering. ## Current production — sourcing and compliance Sourced and quoted to order against the BOM quantity through independent distribution. Availability and current pricing confirmed at RFQ time — no stock-holding claim is made here.","metaTitle":"Siemens 3RH2911-1DA02 SIRIUS S00 Auxiliary Switch","metaDescription":"Siemens 3RH2911-1DA02 SIRIUS auxiliary switch, S00 size, snap-on DIN rail. Rated 6 A at 24 V, 10 A at 24 V AC-15. IP20 front. Current production.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"Depth":"66 mm","Width":"10 mm","title":"3RH2911-1DA02","Height":"57.4 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, lateral, 2 NC, on the left: 41/42, 51/52, on the right: 21/22, 31/32, current path: 1 NC, 1 NC, screw 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","Product Category":"Auxiliary switch","Lagging Switching":"0","Size Of Contactor":"S00","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":"first laterally mountable","Instantaneous Contact":"0","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":"$6.48","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/6375ff7c18d995b6cf180e0fde3d15b1.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=434793&mlfb=3RH2911-1DA02"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH2911-1DA02","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/3RH2911-1DA02 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}}