{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH2911-1XA22-0MA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH2911-1XA22-0MA0","canonicalUrl":"https://aoctrl.com/siemens/3RH2911-1XA22-0MA0","factsUrl":"https://aoctrl.com/api/mcp/products/3RH2911-1XA22-0MA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RH2911-1XA22-0MA0 auxiliary switch, 2 NO instantaneous contacts, snap-on mounting for contactor sizes S00, S0, S2, S3, IP20 front, 43.7 x 36 x 37.5 mm.","salesMarkdown":"## Auxiliary switch for SIRIUS contactor line The Siemens 3RH2911-1XA22-0MA0 is a SIRIUS auxiliary switch designed for snap-on mounting onto the front of contactor relays and power contactors in sizes S00, S0, S2, and S3. It provides 2 NO instantaneous contacts (no leading or lagging switching) and carries a contact reliability rating of 1 faulty switching per 100 million operations at 17 V, 1 mA — a figure that matters for PLC-level signal integrity in low-energy circuits. ## Current ratings and switching duty Rated operational current varies by voltage and duty: at 24 V the switch handles 6 A (general use) and 10 A under AC-15 (solenoid/contactor control); at 230 V it delivers 6 A general and 1.2 A AC-15; at 400 V it is rated 3 A general and 0.5 A AC-15. For higher-voltage applications, the AC-15 rating at 690 V is 1 A, and at 600 V it drops to 0.26 A — the inductive load switching capability falls off sharply above 400 V. The switch meets mirror contact requirements per IEC 60947-4-1 when used with 3RT2 contactors — meaning the NO contact cannot remain closed if the main contactor welds, a safety-critical feature for motor starter circuits. ## Panel fit and wiring Dimensions are 43.7 mm deep, 36 mm wide, and 37.5 mm high — the 36 mm width matches the standard S00/S0 contactor front profile, so it does not add panel width beyond the contactor itself. Snap-on mounting means no tools for attachment; the switch clips directly onto the contactor front, saving DIN rail space compared to a separate terminal-mounted block. Terminal capacity accepts 2x (0.5...1.5 mm²) solid/stranded or 2x (0.75...2.5 mm²) finely stranded with ferrule, or 2x (20...16) and 2x (18...14) AWG — enough for control-circuit wiring up to 2.5 mm². ## Environmental and compliance Rated IP20 on the front — protected against solid objects over 12 mm but not against moisture; suitable for dry indoor panel environments where the contactor itself provides the enclosure. Operating temperature range is -25 to +60 °C, storage from -55 to +80 °C, covering most industrial control cabinet conditions. Surge voltage resistance is 6 kV, and the product complies with RoHS substance prohibitions dated 10/01/2009.","metaTitle":"Siemens 3RH2911-1XA22-0MA0 SIRIUS Auxiliary Switch","metaDescription":"Siemens 3RH2911-1XA22-0MA0 SIRIUS auxiliary switch, 2 NO instantaneous contacts, snap-on mounting for S00-S3 contactors. Rated 10 A at 24 V AC-15. IP20 front.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"Depth":"43.7 mm","Width":"36 mm","title":"3RH2911-1XA22-0MA0","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, 2 NO + 2 NC, 53/54, 61/62, 71/72, 83/84, current path: 1 NO, 1 NC, 1 NC, 1 NO, screw terminal, for contactors 3RT2 and contactor relays 3RH2","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, with SUVA approval","Instantaneous Contact":"2","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":"$7.21","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/42d802e99e97f58f49c059c46a3e3704.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=411527&mlfb=3RH2911-1XA22-0MA0"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH2911-1XA22-0MA0","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/3RH2911-1XA22-0MA0 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}}