{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RA2444-8XF32-1AP0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RA2444-8XF32-1AP0","canonicalUrl":"https://aoctrl.com/siemens/3RA2444-8XF32-1AP0","factsUrl":"https://aoctrl.com/api/mcp/products/3RA2444-8XF32-1AP0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RA2444-8XF32-1AP0 contactor assembly for star-delta (wye-delta) start, 55 kW at 400 V AC-3, 3RT2045-1AP00 + 3RT2035-1AP00 contactors, screw-type terminals, 244 x 220 x 180 mm.","salesMarkdown":"## Star-delta contactor assembly, S3 frame The Siemens 3RA2444-8XF32-1AP0 is a pre-assembled SIRIUS contactor assembly for star-delta (wye-delta) motor starting. It ships with three contactors: two 3RT2045-1AP00 units for the line and delta legs, and one 3RT2035-1AP00 for the star leg. Rated at 55 kW at 400 V AC-3 (90 kW at 690 V), this assembly handles the starting current transition without external interlocking wiring — the mechanical interlock is built into the supplied RS assembly kit 3RA2943-2C. ## Mounting and panel fit Clearance around the assembly: 10 mm upwards, forwards, downwards, and to the side; zero clearance backwards. ## Wiring and compliance AWG main contacts accept 2x (10... 1/0) or 1x (10... 2/0). The coil draws 0.38 A at 50 Hz (594 VA at 60 Hz). Substance prohibitance date is 03/01/2017 (RoHS compliance). No auxiliary switch or bus communication extension fitted on this variant.","metaTitle":"Siemens 3RA2444-8XF32-1AP0 SIRIUS Star-Delta Starter","metaDescription":"Siemens 3RA2444-8XF32-1AP0 SIRIUS star-delta contactor assembly, 55 kW at 400 V AC-3, 3RT2045-1AP00 + 3RT2035-1AP00 contactors.","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":"3RA2444-8XF32-1AP0","Height":"180 mm","Upwards":"10 mm","Forwards":"10 mm","at 50 Hz":"0.38","at 60 Hz":"594 VA","Backwards":"0 mm","Downwards":"10 mm","At The Side":"10 mm","description":"Contactor assembly for star-delta (wye-delta) start AC-3, 75 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":"1 000 1/h","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":"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":"55 kW","at 50 Hz rated value":"230 V","at 690 V rated value":"90 kW","Instantaneous Contact":"3","For Main Current Circuit":"screw-type terminals","1 Of The Supplied Contactor":"3RT2045-1AP00","2 Of The Supplied Contactor":"3RT2045-1AP00","3 Of The Supplied Contactor":"3RT2035-1AP00","at AC-3 rated value maximum":"690 V","Substance Prohibitance (Date)":"03/01/2017","at AWG cables for main contacts":"2x (10 ... 1/0), 1x (10 ... 2/0)","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/3bfd91b359694c8569b43e6cf0543769.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=722803&mlfb=3RA2444-8XF32-1AP0"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RA2444-8XF32-1AP0","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/3RA2444-8XF32-1AP0 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}}