{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RA1145-4JD44-1AV6","brand":"Siemens","brandSlug":"siemens","productSlug":"3RA1145-4JD44-1AV6","canonicalUrl":"https://aoctrl.com/siemens/3RA1145-4JD44-1AV6","factsUrl":"https://aoctrl.com/api/mcp/products/3RA1145-4JD44-1AV6","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS non-fused motor starter, Size S3, 3RA1145-4JD44-1AV6, 63 A at 480 V, Trip Class 10, snaps onto 60 mm busbar systems.","salesMarkdown":"## What this SIRIUS motor starter is The Siemens 3RA1145-4JD44-1AV6 is a SIRIUS non-fused motor starter, Size S3, configured as a direct starter. It ships with the 3RT1044-1AV60 contactor and the 3RA1941-1AA00 link module, so it arrives as a pre-assembled combination ready for panel integration. Rated 63 A at 480 V AC-3 (motor duty), it handles motors up to 50 hp at 460/480 V and 60 hp at 575/600 V. The unit snaps onto 60 mm busbar systems (mounting position vertical), which speeds panel assembly and eliminates separate busbar wiring. Clearance requirements: 90 mm upwards, 10 mm forwards, 6 mm backwards, 10 mm downwards, and 12 mm at the side. No official replacement has been announced. The 3RA1145-4JD44-1AV6 remains the direct order code for this Size S3, 63 A, Trip Class 10 configuration. Dimensions: 244 mm depth × 70 mm width × 354 mm height. The S3 footprint fits standard motor-starter slots in 800 mm wide enclosures; allow the listed clearances for heat dissipation and cable bending radius. Main contact stranded wire range: 2.5... 70 mm², or 2× (10... 50 mm²). Operating temperature range –20 to +60 °C; storage –50 to +80 °C; transport –55 to +80 °C. Pollution degree 3 (industrial environment). Rated insulation voltage 690 V. The 50/60 Hz operating range is 384... 528 V, so it works on both 400 V and 480 V systems without derating.","metaTitle":"Siemens 3RA1145-4JD44-1AV6 SIRIUS Non-Fused Motor Starter","metaDescription":"Siemens 3RA1145-4JD44-1AV6 SIRIUS non-fused motor starter, Size S3, 63 A at 480 V, Trip Class 10. Current lifecycle stage. Quoted to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Motor Starters"],"specifications":{"Depth":"244 mm","Width":"70 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":"30 000 W","at 480 V rated value":"63 A","at 50 Hz rated value":"384 ... 528 V","at 500 V rated value":"37 000 W","at 60 Hz rated value":"384 ... 528 V","at 600 V rated value":"61.5 A","Design Of The Product":"direct starter","at 110/120 V rated value":"5 hp","at 200/208 V rated value":"20 hp","at 220/230 V rated value":"25 hp","at 460/480 V rated value":"50 hp","at 575/600 V rated value":"60 hp","Of The Supplied Contactor":"3RT1044-1AV60","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","Substance Prohibitance (Date)":"03/01/2017","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":"3RV1041-4JA15","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":"20 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","at 500 V according to IEC 60947-4-1 rated value":"50 000 A","operational current at AC-3 at 400 V rated value":"55 A","Type Of Electrical Connection For Main Current Circuit":"screw-type terminals","Inductive Power Factor With The Holding Power Of The Coil":"0.28","Mechanical Service Life (Switching Cycles) Of Contactor Typical":"10 000 000","Response Value Current Of Instantaneous Short-Circuit Trip Unit":"819 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":"45 ... 63 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=186012&mlfb=3RA1145-4JD44-1AV6","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RA1145-4JD44-1AV6/alternatives.json"},"ai":{"faq":[{"question":"What is the price of 3RA1145-4JD44-1AV6?","answer":"Pricing is confirmed at quote time. Submit an RFQ for current pricing and availability on this SIRIUS motor starter."},{"question":"Is 3RA1145-4JD44-1AV6 available via RFQ confirmation?","answer":"Availability is confirmed at quote time. Submit an RFQ to check current stock and lead time for this unit."},{"question":"Can 3RA1145-4JD44-1AV6 be used for 60 Hz applications?","answer":"Yes. The operating voltage range is 384... 528 V at both 50 Hz and 60 Hz."},{"question":"Can 3RA1145-4JD44-1AV6 be used with a 480 V motor?","answer":"Yes. It is rated 63 A at 480 V AC-3, and 50 hp at 460/480 V."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RA1145-4JD44-1AV6","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/3RA1145-4JD44-1AV6 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}}