{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RA1245-4KD45-1AU6","brand":"Siemens","brandSlug":"siemens","productSlug":"3RA1245-4KD45-1AU6","canonicalUrl":"https://aoctrl.com/siemens/3RA1245-4KD45-1AU6","factsUrl":"https://aoctrl.com/api/mcp/products/3RA1245-4KD45-1AU6","rawCanonicalId":null},"summary":{"shortDescription":"Combination starter Reversing Fastbus mount,IEC SIRIUS Frame size S3,57- 75a 277 VAC control voltage MSP aux-1 SPDT NO/NC Contactor auxiliary -1NO Front mount","salesMarkdown":null,"metaTitle":null,"metaDescription":null,"metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Motor Starters"],"specifications":{"Depth":"244 mm","Width":"150 mm","Height":"354 mm","Upwards":"90 mm","Forwards":"10 mm","Backwards":"6 mm","Downwards":"10 mm","Trip Class":"CLASS 10","At The Side":"12 mm","Rated Value":"690 V","During Storage":"-50 ... +80 °C","lifecycle_stage":"current","During Operation":"-20 ... +60 °C","During Transport":"-55 ... +80 °C","Fastening Method":"for snapping onto 60 mm busbar systems","Mounting Position":"vertical","Product Brand Name":"SIRIUS","Type Of Assignment":"2","Degree Of Pollution":"3","Product Designation":"non-fused motor starter","Size Of Load Feeder":"S3","at 230 V rated value":"15 hp","at 400 V rated value":"37 000 W","at 480 V rated value":"75 A","at 50 Hz rated value":"221.6 ... 304.7 V","at 500 V rated value":"45 000 W","at 60 Hz rated value":"221.6 ... 304.7 V","at 600 V rated value":"75 A","Design Of The Product":"reversing starter","at 110/120 V rated value":"7.5 hp","at 200/208 V rated value":"25 hp","at 220/230 V rated value":"25 hp","at 460/480 V rated value":"60 hp","at 575/600 V rated value":"75 hp","Of The Supplied Contactor":"3RT1045-1AU60","For Main Contacts Stranded":"2.5 ... 70 mm², 2x (10 ... 50 mm²)","Of The Supplied Link Module":"3RA1941-1AA00","Size Of The Circuit-Breaker":"S3","at AC-3 rated value maximum":"690 V","Design Of The Overload Release":"thermal (bimetallic)","Of The Supplied Busbar Adapter":"FBS10070","Design Of The Switching Contact":"electromechanical","Operating Frequency Rated Value":"60 ... 60 Hz","at AWG cables for main contacts":"1x (10 ... 2/0), 2x (10 ... 1/0)","Design Of The Short-Circuit Trip":"magnetic","Of The Supplied Circuit-Breakers":"3RV1041-4KA15","Product Extension Auxiliary Switch":"Yes","Surge Voltage Resistance Rated Value":"6 kV","Number Of Poles For Main Current Circuit":"3","Product Function Short Circuit Protection":"Yes","apparent holding power of magnet coil at AC":"21 VA","number of NC contacts for auxiliary contacts":"1","number of NO contacts for auxiliary contacts":"1","shock resistance according to IEC 60068-2-27":"6g / 11 ms","at 400 V according to IEC 60947-4-1 rated value":"50 000 A","operational current at AC-3 at 400 V rated value":"66 A","Type Of Electrical Connection For Main Current Circuit":"screw-type terminals","Inductive Power Factor With The Holding Power Of The Coil":"0.29","Mechanical Service Life (Switching Cycles) Of Contactor Typical":"10 000 000","Response Value Current Of Instantaneous Short-Circuit Trip Unit":"975 A","insulation voltage with degree of pollution 3 at AC rated value":"690 V","Adjustable Current Response Value Current Of The Current-Dependent Overload Release":"57 ... 75 A","Connectable Conductor Cross-Section For Main Contacts Finely Stranded With Core End Processing":"2.5 ... 50 mm²"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=224315&mlfb=3RA1245-4KD45-1AU6","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RA1245-4KD45-1AU6/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RA1245-4KD45-1AU6","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/3RA1245-4KD45-1AU6 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:15:54.622Z","lastPublished":"2026-09-02T08:15:54.622Z","indexable":true}}