{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH2911-2XA20-0MA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH2911-2XA20-0MA0","canonicalUrl":"https://aoctrl.com/siemens/3RH2911-2XA20-0MA0","factsUrl":"https://aoctrl.com/api/mcp/products/3RH2911-2XA20-0MA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS auxiliary switch, front-mounted, 2 NO (53/54, 63/64), spring-loaded terminals, 10 A max, for 3RT2 contactors and 3RH2 contactor relays.","salesMarkdown":"The Siemens SIRIUS 3RH2911-2XA20-0MA0 is a front-mounted auxiliary switch block delivering 2 normally-open contacts (53/54, 63/64) for 3RT2 power contactors and 3RH2 contactor relays. It uses spring-loaded terminals — strip length around 8 mm, accepts 2x (0.5... 1.5 mm²) with ferrules or 2x (0.5... 2.5 mm²) solid — and snaps onto the contactor front without tools. Maximum continuous current is 10 A, but the real-world switching capacity depends on voltage and load type. At 24 V AC/DC it handles 6 A; at 110 V it drops to 1 A; at 220-250 V it's back to 6 A (resistive). For DC loads the curve is steeper: 10 A at 24 V, 4.7 A at 60 V, 1.2 A at 220 V, and 0.26 A at 600 V. The AC-15 rating at 690 V is 1 A — that's the inductive load case for solenoid valves and contactor coils. Insulation voltage is 690 V at pollution degree 3, with 6 kV surge withstand. That means it's rated for 480 V panels without derating, and the surge rating covers most industrial transient environments. Snap-on mounting to the contactor front — no DIN rail required. Dimensions are 36 mm wide, 47.7 mm deep, 41.5 mm high. Front IP20 means finger-safe when installed in a closed panel. Mechanical life is 10 million operating cycles, and contact reliability is rated at 1 faulty switching per 100 million operations at 17 V, 1 mA — that's the dry-circuit spec for PLC-level signals.","metaTitle":"Siemens 3RH2911-2XA20-0MA0 Auxiliary Switch, 2 NO, Spring-Lo","metaDescription":"Siemens SIRIUS 3RH2911-2XA20-0MA0 auxiliary switch, 2 NO contacts, spring-loaded terminals, rated 10 A. For 3RT2 contactors and 3RH2 contactor relays. Snap-on mounting. Current lif","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"Note":"with 3RH2","Depth":"47.7 mm","Width":"36 mm","Height":"41.5 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","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":"2","With Core End Processing":"2x (0.5 ... 1.5 mm²)","Without Core End Processing":"2x (0.5 ... 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 ... 14)","Contact Reliability Of Auxiliary Contacts":"1 faulty switching per 100 million (17 V, 1 mA)","Mechanical Service Life (Operating Cycles) Typical":"10 000 000","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"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=46378&mlfb=3RH2911-2XA20-0MA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RH2911-2XA20-0MA0/alternatives.json"},"ai":{"faq":[{"question":"What does the note 'with 3RH2' mean?","answer":"It means this auxiliary switch is designed to mount on 3RH2 contactor relays (and 3RT2 contactors), not on other frame sizes."},{"question":"Will 3RH2911-2XA20-0MA0 drop into a panel specified around 3RH2122-2AV60?","answer":"Both are front-mounted auxiliary blocks for the same 3RH2/3RT2 platform, so the footprint and mounting are identical. The difference is contact configuration: this one is 2 NO; the 3RH2122-2AV60 is a different contact arrangement. Check your schematic for NO vs NC needs before swapping."},{"question":"How do I get current pricing and availability for 3RH2911-2XA20-0MA0?","answer":"Submit an RFQ through this listing. Availability and current pricing are confirmed at quote time through independent distribution channels."},{"question":"What compliance documentation does Siemens provide for this part?","answer":"Standard Siemens SIRIUS documentation includes the datasheet with ratings and dimensions. For specific compliance certificates (UL, CSA, CE, RoHS, REACH), check the manufacturer's support portal using the order code 3RH2911-2XA20-0MA0."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH2911-2XA20-0MA0","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/3RH2911-2XA20-0MA0 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:15:54.622Z","lastPublished":"2026-09-02T08:15:54.622Z","indexable":true}}