{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RA2445-8XF32-1AP0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RA2445-8XF32-1AP0","canonicalUrl":"https://aoctrl.com/siemens/3RA2445-8XF32-1AP0","factsUrl":"https://aoctrl.com/api/mcp/products/3RA2445-8XF32-1AP0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RA2445-8XF32-1AP0 star-delta contactor assembly, 75 kW at 400 V, 110 kW at 690 V, Size S3, screw terminals, 244 mm depth, 220 mm width, 180 mm height.","salesMarkdown":"## Star-delta contactor assembly, 75 kW at 400 V The 3RA2445-8XF32-1AP0 is a Siemens SIRIUS star-delta (wye-delta) contactor assembly — a pre-wired set of three contactors and the interlocking RS assembly kit on a common mounting plate, ready to bolt in and wire up for reduced-voltage motor starting. Rated 75 kW at 400 V and 110 kW at 690 V, this Size S3 assembly handles the motor starting current surge without the full inrush hitting the line, then transitions to delta run. It ships with two 3RT2045-1AP00 contactors for the line and star legs, and one 3RT2036-1AP00 for the delta leg — all screw-type terminals on the main and auxiliary circuits. ## Mounting and panel fit — DIN rail or screw-fixed Dimensions are 180 mm high, 220 mm wide, and 244 mm deep — the depth is the biggest footprint factor in a shallow enclosure. Clearance around the assembly: 10 mm upward, 10 mm forward, 10 mm downward, 10 mm at the side, and 0 mm backward (it can sit flush against the backplane). ## Sourcing and lifecycle — active, quoted to order The RS assembly kit (3RA2943-2C) is included, and the contactors are standard SIRIUS catalog items, so spares and replacements are straightforward to source. RoHS compliance date is 03/01/2017 — it meets the EU substance restrictions for current production.","metaTitle":"Siemens 3RA2445-8XF32-1AP0 SIRIUS Star-Delta Starter","metaDescription":"Siemens 3RA2445-8XF32-1AP0 SIRIUS star-delta contactor assembly, 75 kW at 400 V, 110 kW at 690 V. Active production, quoted to order.","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":"3RA2445-8XF32-1AP0","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","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":"75 kW","at 50 Hz rated value":"230 V","at 690 V rated value":"110 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":"3RT2036-1AP00","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","operating frequency at AC-3 maximum":"1 000 1/h","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","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/afa0979929aec5c865c27609e726bc5a.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=722806&mlfb=3RA2445-8XF32-1AP0"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RA2445-8XF32-1AP0","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/3RA2445-8XF32-1AP0 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}