{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RA2425-8XF32-1AL2","brand":"Siemens","brandSlug":"siemens","productSlug":"3RA2425-8XF32-1AL2","canonicalUrl":"https://aoctrl.com/siemens/3RA2425-8XF32-1AL2","factsUrl":"https://aoctrl.com/api/mcp/products/3RA2425-8XF32-1AL2","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RA2425-8XF32-1AL2 star-delta (wye-delta) contactor assembly, S0 size, 15 kW at 400 V AC-3, screw-type terminals, 3RT2026 and 3RT2024 contactors included, DIN rail mount.","salesMarkdown":"## Star-delta contactor assembly — what's in the box The 3RA2425-8XF32-1AL2 is a Siemens SIRIUS pre-assembled star-delta (wye-delta) contactor assembly. It ships with three contactors: two 3RT2026-1AL20 units for the line and delta legs, and one 3RT2024-1AL20 for the star leg. Rated at 15 kW at 400 V AC-3, it handles motor starting up to 690 V AC-3 maximum. The S0 frame size keeps the footprint compact for panel layouts where every millimeter counts. All power and control connections use screw-type terminals — no special tooling needed for field wiring. ## Motor power across voltage rails At 400 V rated value, the assembly delivers 15 kW. Step up to 500 V and it handles 19 kW; at 690 V it also holds 19 kW. Mechanical life is 10 million operations typical. The maximum switching rate at AC-3 is 1,000 cycles per hour — enough for frequent-start applications like conveyors or pumps that cycle on load. ## Wiring capacity and clearance Dimensions are 101 mm high, 135 mm wide, 171 mm deep. Clearance requirements: 6 mm upwards, forwards, downwards, and to the side; 0 mm backwards — it can sit flush against the back panel. Shock resistance is 11.8 g / 5 ms and 7.4 g / 10 ms for AC, 15 g / 5 ms and 10 g / 10 ms for DC. ## Lifecycle and compliance The assembly includes an RS assembly kit (3RA2923-2BB1) and does not come with an auxiliary switch extension.","metaTitle":"Siemens 3RA2425-8XF32-1AL2 SIRIUS Star-Delta Starter","metaDescription":"Siemens 3RA2425-8XF32-1AL2 SIRIUS star-delta contactor assembly, 15 kW at 400 V AC-3. Includes 3RT2026 and 3RT2024 contactors.","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":"11,8g / 5 ms, 7,4g / 10 ms","at DC":"15g / 5 ms, 10g / 10 ms","title":"3RA2425-8XF32-1AL2","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, 15/18.5 kW/400 V 230 V AC, 50/60 Hz, 3-pole Size S0, screw terminal 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":"15 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":"3RT2026-1AL20","2 Of The Supplied Contactor":"3RT2026-1AL20","3 Of The Supplied Contactor":"3RT2024-1AL20","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: 35 A","At Contactor For Auxiliary Contacts":"Screw-type terminals","With Type Of Coordination 1 Required":"gG NH 3NA, DIAZED 5SB, NEOZED 5SE: 100 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/f43c5af05950ef5635b87fa27a3a911f.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=333875&mlfb=3RA2425-8XF32-1AL2"},"ai":{"faq":[{"question":"What is the 3RA2425-8XF32-1AL2 used for?","answer":"It is a Siemens SIRIUS star-delta (wye-delta) contactor assembly for starting three-phase induction motors. It includes three contactors and mounts on DIN rail."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RA2425-8XF32-1AL2","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/3RA2425-8XF32-1AL2 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}