{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH2911-2XA40-0MA0-ZX95","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH2911-2XA40-0MA0-ZX95","canonicalUrl":"https://aoctrl.com/siemens/3RH2911-2XA40-0MA0-ZX95","factsUrl":"https://aoctrl.com/api/mcp/products/3RH2911-2XA40-0MA0-ZX95","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS auxiliary switch, 4 NO, spring-loaded terminals, 10 A max, snap-on mount, IP20, for 3RT2/3RH2 contactors.","salesMarkdown":"The Siemens SIRIUS 3RH2911-2XA40-0MA0-ZX95 is a front-mounted auxiliary switch block for 3RT2 power contactors and 3RH2 contactor relays. It provides four normally-open (NO) instantaneous contacts, each rated for a maximum of 10 A, with spring-loaded terminals for tool-free wiring. The headline 10 A maximum applies across the board, but the real-world switching capacity depends on the voltage you're working with. At 24 V, each NO contact is rated 6 A for the auxiliary contact path and 10 A at the rated-value column — the higher figure governs the contact's continuous current-carrying capability at that voltage. At 110 V, the rated value drops to 3 A; at 220 V, 1.2 A; at 440 V, 0.5 A; and at 600 V, 0.26 A. For AC-15 inductive loads at 690 V, the contact is rated 1 A. This derating curve means the part is sized for control-circuit switching across a wide voltage range, not for power-circuit duty. Snap-on mounting onto the contactor or relay front — no tools needed. The block measures 36 mm wide, 41.5 mm high, and 47.7 mm deep. Spring-loaded terminals accept 2x (0.5 to 2.5 mm²) without core-end processing, or 2x (0.5 to 1.5 mm²) with ferrules. AWG equivalents are 2x (20 to 14) for auxiliary contacts. ## Mechanical endurance and contact reliability Rated for 10 million mechanical switching cycles typical. Surge voltage resistance is 6 kV, with insulation voltage rated at 690 V AC for degree of pollution 3.","metaTitle":"Siemens 3RH2911-2XA40-0MA0-ZX95 Auxiliary Switch, 4 NO, 10 A","metaDescription":"Siemens SIRIUS auxiliary switch for 3RT2/3RH2 contactors. 4 NO, spring-loaded terminals, 10 A max, IP20 front. Snap-on mount. Current production. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"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":"4","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 (Switching 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":"https://cdn.aoctrl.com/cdaf7653dc5d748b018fcc908df097d3.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=268476&mlfb=3RH2911-2XA40-0MA0-ZX95","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RH2911-2XA40-0MA0-ZX95/alternatives.json"},"ai":{"faq":[{"question":"What is the 3RH2911-2XA40-0MA0-ZX95 used for?","answer":"It is a front-mounted auxiliary switch block for Siemens SIRIUS 3RT2 power contactors and 3RH2 contactor relays, providing four NO instantaneous contacts with spring-loaded terminals."},{"question":"What is the closest functional second-source for 3RH2911-2XA40-0MA0-ZX95?","answer":"The Siemens 3RH2131-2AK60 is a peer auxiliary contact block in the same SIRIUS family, but it differs in contact configuration and terminal type. The 3RH2911-2XA40-0MA0-ZX95 uses spring-loaded terminals and provides 4 NO; verify your panel's wiring and contact count before substituting."},{"question":"Where can I buy 3RH2911-2XA40-0MA0-ZX95?","answer":"This part is sourced and quoted to order through independent distribution. Submit an RFQ for current pricing and availability; no stock count or lead-time figure is published here."},{"question":"What compliance documentation does Siemens provide for 3RH2911-2XA40-0MA0-ZX95?","answer":"The part carries IP20 front protection, 6 kV surge voltage resistance, and 690 V insulation voltage at pollution degree 3. Standard Siemens declarations (RoHS, REACH, UL, IEC) are available from the manufacturer's documentation portal for this SIRIUS order code."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH2911-2XA40-0MA0-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/3RH2911-2XA40-0MA0-ZX95 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}}