{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH2911-2XA11-0MA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH2911-2XA11-0MA0","canonicalUrl":"https://aoctrl.com/siemens/3RH2911-2XA11-0MA0","factsUrl":"https://aoctrl.com/api/mcp/products/3RH2911-2XA11-0MA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RH2911-2XA11-0MA0, auxiliary switch, 1 NO instantaneous contact, snap-on front mounting, for contactor sizes S00, S0, S2, S3, IP20.","salesMarkdown":"It is rated for use with the S00, S0, S2, and S3 contactor frame sizes, which covers a broad range of motor starters and switching duties in a control panel. The contact carries 6 A at 24 V and 6 A at 230 V, with the current dropping as voltage rises — 2 A at 48 V and 60 V, 1 A at 110 V, 0.9 A at 125 V, 0.3 A at 220 V and 250 V, and 3 A at 400 V. These are the conventional thermal current (Ith) values, meaning the contact can handle that current continuously in a resistive circuit at the stated voltage. For motor or inductive loads, you derate from these figures. The rated operational current tells a different story: 10 A at 24 V, 4.7 A at 60 V, 3 A at 110 V, 1.2 A at 220 V, 0.5 A at 440 V, and 0.26 A at 600 V — these are the values for AC-15 (solenoid/contactor coil) duty, which is the real-world load this switch will see in a control circuit. The 6 kV rated surge voltage resistance means it can handle transients typical in industrial panels without flashover. Snap-on mounting onto the front of the contactor — no tools needed. The 36 mm width, 47.7 mm depth, and 41.5 mm height mean it adds minimal footprint to the contactor assembly. Wire termination accepts 2 x (0.5... 2.5 mm²) solid or stranded, 2 x (0.5... 1.5 mm²) finely stranded with ferrule, or 2 x (20... 14) AWG. ## Sourcing posture As an active-production SIRIUS component, this auxiliary switch is sourced through standard Siemens distribution channels. No second-source or direct cross-reference is listed; the 3RT2 contactor family it mates with is the primary ecosystem.","metaTitle":"Siemens 3RH2911-2XA11-0MA0 SIRIUS Auxiliary Switch, 1 NO con","metaDescription":"Siemens SIRIUS 3RH2911-2XA11-0MA0 auxiliary switch for contactor relays. 1 NO instantaneous contact, snap-on mounting for S00-S3. Rated 6 A at 24 V.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"Depth":"47.7 mm","Width":"36 mm","title":"3RH2911-2XA11-0MA0","Height":"41.5 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 + 1 NC, 51/52, 63/64, --/--, --/--, current path: 1 NC, 1 NO, --, --, spring-loaded 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 ... 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":"1","Substance Prohibitance (Date)":"10/01/2009","protection class IP on the front":"IP20","Surge Voltage Resistance Rated Value":"6 kV","for AWG cables for auxiliary contacts":"2x (20 ... 14)","Finely Stranded With Core End Processing":"2x (0.5 ... 1.5 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","Finely Stranded Without Core End Processing":"2x (0.5 ... 2.5 mm²)","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":"spring-loaded 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/3bbb0acf6afbf4a0610305090f399542.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1367251&mlfb=3RH2911-2XA11-0MA0"},"ai":{"faq":[{"question":"What contactor sizes does this auxiliary switch fit?","answer":"It is designed for snap-on mounting on SIRIUS contactor frames S00, S0, S2, and S3, covering a wide range of motor starters from small to medium power."},{"question":"What is the switching capacity at 24 V DC?","answer":"The conventional thermal current (Ith) is 6 A at 24 V, and the rated operational current for AC-15 duty is 10 A at 24 V."},{"question":"Does this auxiliary switch have a mirror contact function?","answer":"Yes, it provides a mirror contact per IEC 60947-4-1 when used with the 3RT2 contactor series, which is critical for safety circuit feedback."},{"question":"What wire sizes does the terminal accept?","answer":"It accepts 2 x (0.5... 2.5 mm²) solid or stranded, 2 x (0.5... 1.5 mm²) finely stranded with ferrule, and 2 x (20... 14) AWG."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH2911-2XA11-0MA0","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/3RH2911-2XA11-0MA0 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}}