{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RA2426-8XF32-1AL2","brand":"Siemens","brandSlug":"siemens","productSlug":"3RA2426-8XF32-1AL2","canonicalUrl":"https://aoctrl.com/siemens/3RA2426-8XF32-1AL2","factsUrl":"https://aoctrl.com/api/mcp/products/3RA2426-8XF32-1AL2","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RA2426-8XF32-1AL2 star-delta (wye-delta) contactor assembly, S0 frame, 22 kW at 400 V AC-3, 3RT2027-1AL20 and 3RT2026-1AL20 contactors included, screw terminals, 135 x 101 x 171 mm.","salesMarkdown":"## Star-delta assembly, not a bare contactor The 3RA2426-8XF32-1AL2: This is a pre-assembled star-delta (wye-delta) starter from the Siemens SIRIUS family — not a single contactor but a complete assembly with three contactors and the interconnecting RS kit on a common mounting plate. It ships with two 3RT2027-1AL20 contactors and one 3RT2026-1AL20, plus the 3RA2923-2BB1 RS assembly kit, all wired for the star-delta transition. The S0 frame size keeps the footprint compact — 135 mm wide, 101 mm tall, 171 mm deep — fitting standard 35 mm DIN rail with screw or snap-on mounting. Mechanical life is 10 million operations typical, with a maximum switching frequency of 1,000 cycles per hour at AC-3. That's enough for frequent-start applications like conveyors or compressors, but not for continuous high-speed indexing. Factor this into the enclosure thermal budget. ## Mounting and panel integration Mounts on 35 mm DIN rail via screw or snap-on fastening. Clearance distances for ventilation: 6 mm upwards, 6 mm forwards, 6 mm downwards, 6 mm at the sides, and 0 mm backwards (the DIN rail side). This means the assembly can sit flush against the back panel, but needs 6 mm air gap on all other sides for natural convection cooling. The shock resistance is 13.5g / 5 ms and 8.3g / 10 ms for AC, 15g / 5 ms and 10g / 10 ms for DC — adequate for most industrial panels but not for high-vibration mobile equipment. ## Termination and wiring All terminals — main current circuit, auxiliary/control circuit, and magnet coil — use screw-type terminals. No spring-cage option on this variant. Three instantaneous contacts are included — no auxiliary switch extension is fitted (product extension auxiliary switch: No). If you need additional auxiliary contacts, they must be added externally. ## Lifecycle and sourcing posture Sourced through authorized distribution channels against an RFQ. No stock-holding claim is made here; the supply chain is quoted per order. RoHS compliance date is 10/01/2009 — the assembly meets the EU RoHS directive from that date forward. No UL/CSA/CE marks are listed in the spec record, but as a Siemens SIRIUS product it typically carries CE for the European market; verify specific approvals for your jurisdiction at RFQ.","metaTitle":"Siemens 3RA2426-8XF32-1AL2 SIRIUS Star-Delta Starter","metaDescription":"Siemens SIRIUS 3RA2426-8XF32-1AL2 star-delta contactor assembly, 22 kW at 400 V AC-3, S0 frame, 3RT contactors included. Active production, quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Motor Starters"],"specifications":{"Depth":"171 mm","Solid":"2x (1 ... 2.5 mm²), 2x (2.5 ... 10 mm²)","Width":"135 mm","at AC":"13,5g / 5 ms, 8,3g / 10 ms","at DC":"15g / 5 ms, 10g / 10 ms","title":"3RA2426-8XF32-1AL2","Height":"101 mm","Upwards":"6 mm","Forwards":"6 mm","at 50 Hz":"0.25","at 60 Hz":"0.28","Backwards":"0 mm","Downwards":"6 mm","At The Side":"6 mm","description":"Contactor assembly for star-delta (wye-delta) start AC-3, 22 kW/400 V, 230 V AC 50/60 Hz, 3-pole, size S0 screw terminals electrical and mechanical interlock 3 NO + 3 NC integrated","During Storage":"-55 ... +80 °C","Of Magnet Coil":"Screw-type terminals","at AC-3 maximum":"1 000 1/h","lifecycle_stage":"current","During Operation":"-25 ... +60 °C","Fastening Method":"screw and snap-on mounting onto 35 mm DIN rail","Mounting Position":"+/-180° rotation possible on vertical mounting surface; can be tilted forward and backward by +/- 22.5° on vertical mounting surface","Size Of Contactor":"S0","Solid Or Stranded":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)","Product Brand Name":"SIRIUS","Product Designation":"Contactor assembly for star-delta (wye-delta) start","Of Contactor Typical":"10 000 000","at 400 V rated value":"22 kW","at 50 Hz rated value":"230 V","at 500 V rated value":"19 kW","at 60 Hz rated value":"230 V","at 690 V rated value":"19 kW","Instantaneous Contact":"3","For Main Current Circuit":"screw-type terminals","1 Of The Supplied Contactor":"3RT2027-1AL20","2 Of The Supplied Contactor":"3RT2027-1AL20","3 Of The Supplied Contactor":"3RT2026-1AL20","at AC-3 rated value maximum":"690 V","Substance Prohibitance (Date)":"10/01/2009","of the supplied RS assembly kit":"3RA2923-2BB1","For Auxiliary And Control Circuit":"screw-type terminals","Product Extension Auxiliary Switch":"No","Product Function Bus Communication":"No","With Type Of Assignment 2 Required":"gG NH 3NA, DIAZED 5SB, NEOZED 5SE: 50 A","At Contactor For Auxiliary Contacts":"Screw-type terminals","With Type Of Coordination 1 Required":"gG NH 3NA, DIAZED 5SB, NEOZED 5SE: 125 A","at AWG cables for auxiliary contacts":"2x (20 ... 16), 2x (18 ... 14)","number of NC contacts for main contacts":"0","number of NO contacts for main contacts":"3","reference code according to IEC 81346-2":"Q","Finely Stranded With Core End Processing":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)","Number Of Poles For Main Current Circuit":"3","Contact Reliability Of Auxiliary Contacts":"< 1 error per 100 million operating cycles","with low demand rate according to SN 31920":"40 %","protocol is supported AS-Interface protocol":"No","with high demand rate according to SN 31920":"75 %","Type Of Voltage Of The Control Supply Voltage":"AC","contact rating of auxiliary contacts according to UL":"A600 / Q600","Of The Supplied Function Module For Wye-Delta Circuits":"3RA2816-0EW20","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","product function control circuit interface with IO link":"No","Of The Contactor With Added Auxiliary Switch Block Typical":"10 000 000","For Short-Circuit Protection Of The Auxiliary Switch Required":"fuse gG: 10 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/ddf0be64bc80a317f8d4c6515ae7bc3a.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=490526&mlfb=3RA2426-8XF32-1AL2"},"ai":{"faq":[{"question":"What is 3RA2426-8XF32-1AL2 used for?","answer":"It includes three contactors and the interconnecting RS kit, ready to mount on DIN rail."},{"question":"What contactors are supplied with 3RA2426-8XF32-1AL2?","answer":"The assembly includes two 3RT2027-1AL20 contactors and one 3RT2026-1AL20 contactor, plus the 3RA2923-2BB1 RS assembly kit."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RA2426-8XF32-1AL2","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/3RA2426-8XF32-1AL2 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T19:47:38.189Z","lastPublished":"2026-07-22T19:47:38.189Z","indexable":true}}