{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RA2426-8XF32-1AC2","brand":"Siemens","brandSlug":"siemens","productSlug":"3RA2426-8XF32-1AC2","canonicalUrl":"https://aoctrl.com/siemens/3RA2426-8XF32-1AC2","factsUrl":"https://aoctrl.com/api/mcp/products/3RA2426-8XF32-1AC2","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RA2426-8XF32-1AC2 contactor assembly for star-delta (wye-delta) start, S0 frame size, 22 kW at 400 V, 24 V coil, screw terminals, DIN rail mount.","salesMarkdown":"The Siemens 3RA2426-8XF32-1AC2 is a factory-assembled SIRIUS contactor assembly for star-delta (wye-delta) motor starting. It ships with three contactors: two 3RT2027-1AC20 units and one 3RT2026-1AC20, plus the RS assembly kit 3RA2923-2BB1 for mechanical interlocking and timing. The S0 frame size keeps the assembly compact at 135 mm wide, 101 mm high, and 171 mm deep — a tight fit for a three-contactor star-delta group in a single footprint. ## Mounting and wiring — DIN rail, screw terminals, conductor ranges AWG equivalents are 2x 16…12 and 2x 14…8 for the main contacts. All power and control connections use screw-type terminals. Clearance distances: 6 mm upwards, forwards, downwards, and to the side; 0 mm backwards — the rear face can sit flush against the panel backplate. ## Environmental and mechanical endurance The assembly withstands shock at 13.5 g / 5 ms and 8.3 g / 10 ms on AC, and 15 g / 5 ms and 10 g / 10 ms on DC. Mechanical life of the contactor typical is 10,000,000 operations. The assembly includes three instantaneous contacts. No auxiliary switch or bus communication extension is fitted as standard. Substance prohibition date is 10/01/2009, indicating RoHS compliance per Siemens declaration.","metaTitle":"Siemens 3RA2426-8XF32-1AC2 SIRIUS Star-Delta Starter","metaDescription":"Siemens 3RA2426-8XF32-1AC2 SIRIUS contactor assembly for star-delta motor starting. Rated 22 kW at 400 V, S0 frame, screw terminals, DIN rail mount.","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":"3RA2426-8XF32-1AC2","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, 24 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","lifecycle_stage":"current","During Operation":"-25 ... +60 °C","Fastening Method":"screw and snap-on mounting onto 35 mm standard mounting 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":"24 V","at 500 V rated value":"19 kW","at 60 Hz rated value":"24 V","at 690 V rated value":"19 kW","Instantaneous Contact":"3","For Main Current Circuit":"screw-type terminals","1 Of The Supplied Contactor":"3RT2027-1AC20","2 Of The Supplied Contactor":"3RT2027-1AC20","3 Of The Supplied Contactor":"3RT2026-1AC20","Substance Prohibitance (Date)":"10/01/2009","at AWG cables for main contacts":"2x (16 ... 12), 2x (14 ... 8)","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","operating frequency at AC-3 maximum":"1 000 1/h","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","operating voltage at AC-3 rated value maximum":"690 V","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/8bf0356da5b01a5a41f9d7254e4cfdc7.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=528902&mlfb=3RA2426-8XF32-1AC2"},"ai":{"faq":[{"question":"What contactors are included in the 3RA2426-8XF32-1AC2 assembly?","answer":"The assembly ships with two 3RT2027-1AC20 contactors and one 3RT2026-1AC20 contactor, plus the 3RA2923-2BB1 RS assembly kit for mechanical interlocking."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RA2426-8XF32-1AC2","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/3RA2426-8XF32-1AC2 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}}