{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH2911-1AA10-ZX90","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH2911-1AA10-ZX90","canonicalUrl":"https://aoctrl.com/siemens/3RH2911-1AA10-ZX90","factsUrl":"https://aoctrl.com/api/mcp/products/3RH2911-1AA10-ZX90","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS auxiliary switch, 1 NO, front-mount, screw terminals, 10 A rated current, for 3RT2 contactors and 3RH2 contactor relays.","salesMarkdown":"The Siemens 3RH2911-1AA10-ZX90 is a front-mounted auxiliary switch block for the SIRIUS contactor family — specifically the 3RT2 power contactors and 3RH2 contactor relays. It adds one normally-open (NO) auxiliary contact, wired via screw terminals, with cable entry from the top. The part ships in multi-unit packaging (10 pieces per pack). Snap-on mounting means it clips directly onto the contactor or relay front without tools — no extra DIN-rail space needed. The 23.6 mm width keeps the assembly compact inside a panel. The contact is rated 10 A maximum, but that's at 24 V. For the AC-15 inductive load curve (typical for contactor coils and solenoid valves), the rated current drops with voltage: 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. At 690 V AC-15 it's rated 1 A. These are the numbers that govern whether the contact holds in — not the 10 A headline. DC switching ratings also vary by voltage: 6 A at 24 V, 2 A at 60 V, 1 A at 110 V, 6 A at 125 V, 0.3 A at 220 V, 6 A at 230 V, 6 A at 250 V, and 3 A at 400 V. The 6 A at 125 V and 230 V stands out — that's the DC coil circuit on many North American panels. Rated for 10 million mechanical switching cycles typical. Front-side protection is IP20 — finger-safe but not washdown-rated. Surge voltage resistance is 6 kV, with insulation rated 690 V at pollution degree 3. Screw-type terminals accept 2x (0.5 to 1.5 mm²) or 2x (0.75 to 2.5 mm²) with core end processing, or 2x (20 to 16) and 2x (18 to 14) AWG. Strip and torque per Siemens standard — no special tooling needed.","metaTitle":"Siemens 3RH2911-1AA10-ZX90 Auxiliary Switch, 1 NO, 10 A, for","metaDescription":"Siemens SIRIUS auxiliary switch 3RH2911-1AA10-ZX90, 1 NO contact, 10 A rated at 24 V, screw terminals, snap-on for 3RT2 contactors and 3RH2 relays. Active production, available to","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"Note":"with 3RH2","Depth":"38.6 mm","Width":"23.6 mm","Height":"27.5 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":"1","With Core End Processing":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 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 ... 16), 2x (18 ... 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":"screw-type 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/995e7c018d6cb381b3dd6e65c32cd83b.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=464215&mlfb=3RH2911-1AA10-ZX90","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RH2911-1AA10-ZX90/alternatives.json"},"ai":{"faq":[{"question":"What contactors does 3RH2911-1AA10-ZX90 fit?","answer":"It mounts on the front of Siemens 3RT2 power contactors and 3RH2 contactor relays. Snap-on attachment, no adapter needed."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH2911-1AA10-ZX90","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/3RH2911-1AA10-ZX90 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}}