{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RA2446-8XF32-1AL2","brand":"Siemens","brandSlug":"siemens","productSlug":"3RA2446-8XF32-1AL2","canonicalUrl":"https://aoctrl.com/siemens/3RA2446-8XF32-1AL2","factsUrl":"https://aoctrl.com/api/mcp/products/3RA2446-8XF32-1AL2","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RA2446-8XF32-1AL2 star-delta (wye-delta) contactor assembly, 90 kW at 400 V AC-3, Size S3, screw-type terminals, 244 mm depth, 220 mm width, 180 mm height.","salesMarkdown":"## Star-delta contactor assembly — 90 kW at 400 V, Size S3 The Siemens 3RA2446-8XF32-1AL2 is a factory-assembled star-delta (wye-delta) contactor assembly from the SIRIUS family, built around three supplied contactors: two 3RT2046-1AL20 and one 3RT2037-1AL20, plus the 3RA2943-2C RS assembly kit. ## Mounting and integration — DIN rail, screw terminals, flexible positioning All main, auxiliary, and control circuit connections use screw-type terminals — no special tooling needed for field wiring. Dimensions are 244 mm deep, 220 mm wide, and 180 mm high. Clearance requirements: 10 mm upward, 10 mm forward, 10 mm downward, 10 mm to the side, and 0 mm backward — the back can sit flush against the panel. ## Duty ratings and operating conditions Rated for AC-3 duty up to 690 V with a maximum switching frequency of 850 operations per hour. Mechanical life of the contactor is rated at 10 million operations typical. The assembly withstands vibration at 10.6 g / 5 ms and 6.3 g / 10 ms (at AC), suitable for industrial environments with moderate shock loads.","metaTitle":"Siemens 3RA2446-8XF32-1AL2 Star-Delta Starter","metaDescription":"Siemens SIRIUS 3RA2446-8XF32-1AL2 star-delta contactor assembly, 90 kW at 400 V AC-3. Active production, screw terminals, DIN rail. Request a quote.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Motor Starters"],"specifications":{"Depth":"244 mm","Width":"220 mm","at AC":"10.6 g / 5 ms, 6.3 g / 10 ms","title":"3RA2446-8XF32-1AL2","Height":"180 mm","Upwards":"10 mm","Forwards":"10 mm","at 50 Hz":"0.35","at 60 Hz":"0.41","Backwards":"0 mm","Downwards":"10 mm","At The Side":"10 mm","description":"Contactor assembly for star-delta (wye-delta) start AC-3, 90 kW/400 V 230 V AC, 50/60 Hz Size S3, screw terminal electrical and mechanical interlock 3 NO+3 NC","During Storage":"-55 ... +80 °C","Of Magnet Coil":"Screw-type terminals","at AC-3 maximum":"850 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":"S3","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":"90 kW","at 50 Hz rated value":"230 V","at 60 Hz rated value":"230 V","at 690 V rated value":"132 kW","Instantaneous Contact":"3","For Main Current Circuit":"screw-type terminals","1 Of The Supplied Contactor":"3RT2046-1AL20","2 Of The Supplied Contactor":"3RT2046-1AL20","3 Of The Supplied Contactor":"3RT2037-1AL20","at AC-3 rated value maximum":"690 V","Substance Prohibitance (Date)":"03/01/2017","of the supplied RS assembly kit":"3RA2943-2C","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: 160 A","At Contactor For Auxiliary Contacts":"Screw-type terminals","With Type Of Coordination 1 Required":"gG NH 3NA, DIAZED 5SB, NEOZED 5SE: 250 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","with low demand rate according to SN 31920":"40 %","Finely Stranded Without Core End Processing":"2x (10 ... 35 mm²), 1x (10 ... 50 mm²)","protocol is supported AS-Interface protocol":"No","with high demand rate according to SN 31920":"73 %","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/556fcd770099601de13906b2c2c8f4f7.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=629727&mlfb=3RA2446-8XF32-1AL2"},"ai":{"faq":[{"question":"What contactors are included in the 3RA2446-8XF32-1AL2 assembly?","answer":"The assembly ships with two 3RT2046-1AL20 contactors and one 3RT2037-1AL20 contactor, plus the 3RA2943-2C RS assembly kit. All three contactors use screw-type terminals for main, auxiliary, and control circuits."},{"question":"What is the power rating of the 3RA2446-8XF32-1AL2 star-delta starter?","answer":"It is rated 90 kW at 400 V AC-3 and 132 kW at 690 V AC-3. The coil is 230 V at 50/60 Hz."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RA2446-8XF32-1AL2","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/3RA2446-8XF32-1AL2 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}}