{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH2911-2XA40-0MA0-ZW98","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH2911-2XA40-0MA0-ZW98","canonicalUrl":"https://aoctrl.com/siemens/3RH2911-2XA40-0MA0-ZW98","factsUrl":"https://aoctrl.com/api/mcp/products/3RH2911-2XA40-0MA0-ZW98","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS auxiliary switch block, 3RH2911-2XA40-0MA0-ZW98, 4 NO, spring-loaded terminals, snap-on front mount for 3RT2 contactors and 3RH2 contactor relays, 10 A rated, IP20 front.","salesMarkdown":"Four normally-open instantaneous contacts, labeled 53/54, 63/64, 73/74, 83/84. All four are independent current paths. The headline rating is 10 A maximum — that's the thermal current (Ith) carrying capacity. What matters for your specific control voltage is the switching capacity at that voltage: 6 A at 24 V, 6 A at 125 V, 6 A at 230 V, 3 A at 400 V, and 0.3 A at 220 V. For AC-15 inductive loads (solenoids, contactor coils) at 690 V, the rated value drops to 1 A — the 690 V insulation voltage with pollution degree 3 supports this, but the switching current is limited by arc extinction capability at that voltage. Mechanical service life is 10 million switching cycles typical. Spring-loaded terminals for auxiliary and control circuits. Accepts 2x (0.5 to 1.5 mm²) with ferrule, or 2x (0.5 to 2.5 mm²) without ferrule. AWG equivalent is 2x (20 to 14). No screw torque to verify, no loose connections from vibration — spring-cage holds until you press the release. The 47.7 mm depth includes the terminal projection; the 36 mm width and 41.5 mm height match the contactor relay footprint. Listed as current production stage. This part is actively manufactured by Siemens. ## Environmental and protection class IP20 on the front — protected against solid objects over 12.5 mm, no water protection. That's standard for inside a control cabinet.","metaTitle":"Siemens 3RH2911-2XA40-0MA0-ZW98 Auxiliary Switch, 4 NO, Spri","metaDescription":"Siemens SIRIUS auxiliary switch block for 3RT2 contactors and 3RH2 relays. 4 NO contacts, spring-loaded terminals, snap-on front mount. Rated 10 A at 24 V, 690 V insulation. Availa","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":"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/a8bddfe9a3c530be331712bdd68c30d1.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=558600&mlfb=3RH2911-2XA40-0MA0-ZW98","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RH2911-2XA40-0MA0-ZW98/alternatives.json"},"ai":{"faq":[{"question":"What is the closest functional second-source to 3RH2911-2XA40-0MA0-ZW98?","answer":"The 3RH2131-2AK60 is a contactor relay in the same SIRIUS family, but it is a base device with its own coil and main contacts — not a front-mounted auxiliary switch block. The two parts are not direct drop-in substitutes; the 3RH2911-2XA40-0MA0-ZW98 is an add-on accessory for an existing 3RT2 or 3RH2 base unit."},{"question":"What does the note 'with 3RH2' mean on this component?","answer":"The note indicates this auxiliary switch block is designed to mount on the front of Siemens 3RH2 contactor relays (and also 3RT2 power contactors). It is not a standalone relay — it adds auxiliary NO contacts to those base devices."},{"question":"What is the depth of 3RH2911-2XA40-0MA0-ZW98?","answer":"The depth is 47.7 mm, which includes the spring-loaded terminal projection from the front of the contactor or relay body."},{"question":"Will 3RH2911-2XA40-0MA0-ZW98 drop into a panel specified around 3RH2131-2AK60?","answer":"Not as a direct replacement — the 3RH2131-2AK60 is a complete contactor relay; the 3RH2911-2XA40-0MA0-ZW98 is a front-mounted auxiliary switch that requires a 3RH2 or 3RT2 base unit to snap onto. If the panel already has a 3RH2 base relay, this switch block will mount on it without rewiring the base terminals."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH2911-2XA40-0MA0-ZW98","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-ZW98 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}}