{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RA2120-1JD24-0AP6","brand":"Siemens","brandSlug":"siemens","productSlug":"3RA2120-1JD24-0AP6","canonicalUrl":"https://aoctrl.com/siemens/3RA2120-1JD24-0AP6","factsUrl":"https://aoctrl.com/api/mcp/products/3RA2120-1JD24-0AP6","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RA2120-1JD24-0AP6 non-fused direct motor starter, S0 size, 4 kW at 400 V, Class 10 thermal bimetallic overload, 690 V AC-3, 45 mm wide, 155 mm deep, 260 mm high.","salesMarkdown":"## What this SIRIUS starter carries The 3RA2120-1JD24-0AP6 is a SIRIUS non-fused direct motor starter, size S0, combining a 3RT2024-1AP60 contactor and a thermal bimetallic overload relay in a single assembly. ## Panel fit and mounting Width is 45 mm, depth 155 mm, height 260 mm — the S0 footprint fits alongside other SIRIUS feeders on a 60 mm busbar system, snapping on without tools. Mounting position is vertical only; clearance above and below is 30 mm and 10 mm respectively, with 10 mm forward and 9 mm to the side. The supplied link module 3RA2921-1AA00 bridges the contactor and overload, and the circuit-breaker size is S00, meaning the upstream short-circuit protection device fits the same compact rail. ## Operating envelope and wiring Operating temperature range is -20 to +60 °C, storage -50 to +80 °C, transport -55 to +80 °C — suitable for unheated plant floors and shipping in temperate climates. Degree of pollution 3 means the starter handles conductive dust and occasional condensation; install in a panel with at least IP54 ingress protection to maintain the rating. Main contact wiring accepts 1 to 10 mm² stranded, or 2x (2.5 to 6 mm²) — enough for the full current range without paralleling conductors.","metaTitle":"Siemens 3RA2120-1JD24-0AP6 SIRIUS Motor Starter","metaDescription":"Siemens SIRIUS 3RA2120-1JD24-0AP6 non-fused motor starter, 4 kW at 400 V, Class 10 thermal overload, S0 feeder size. Active production, quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Motor Starters"],"specifications":{"Depth":"155 mm","Width":"45 mm","title":"3RA2120-1JD24-0AP6","Height":"260 mm","Upwards":"30 mm","Forwards":"10 mm","Backwards":"0 mm","Downwards":"10 mm","Trip Class":"CLASS 10","At The Side":"9 mm","Rated Value":"690 V","description":"Fuseless motor starter Direct start 600VAC Size S0 7-10A 220/240VAC 50/60HZ screw connection For snapping onto 60 mm busbar systems Type of coordination 2 IQ = 150 KA Also full fills type Of coordination 1 1NO+1NC (contactor)","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 3RA2","Size Of Load Feeder":"S0","at 230 V rated value":"1.5 hp","at 400 V rated value":"4 000 W","at 480 V rated value":"7.92 A","at 50 Hz rated value":"176 ... 242 V","at 500 V rated value":"5 500 W","at 60 Hz rated value":"192 ... 264 V","at 600 V rated value":"9.19 A","Design Of The Product":"direct starter","at 110/120 V rated value":"0.5 hp","at 200/208 V rated value":"2 hp","at 220/230 V rated value":"3 hp","at 460/480 V rated value":"5 hp","at 575/600 V rated value":"7.5 hp","Of The Supplied Contactor":"3RT2024-1AP60","For Main Contacts Stranded":"1 ... 10 mm², 2x (2.5 ... 6 mm²)","Of The Supplied Link Module":"3RA2921-1AA00","Size Of The Circuit-Breaker":"S00","at AC-3 rated value maximum":"690 V","Design Of The Overload Release":"thermal (bimetallic)","Of The Supplied Busbar Adapter":"8US1251-5NT10","Design Of The Switching Contact":"electromechanical","Operating Frequency Rated Value":"50 ... 60 Hz","at AWG cables for main contacts":"2x (16 ... 12), 2x (14 ... 8)","Design Of The Short-Circuit Trip":"magnetic","Of The Supplied Circuit-Breakers":"3RV2011-1JA10","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":"7.2 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":"153 000 A","operational current at AC-3 at 400 V rated value":"8.5 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":"130 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":"7 ... 10 A","Connectable Conductor Cross-Section For Main Contacts Finely Stranded With Core End Processing":"1 ... 6 mm²"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/6c6fadda15b65ca91ed6c22e3032609e.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=264127&mlfb=3RA2120-1JD24-0AP6"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RA2120-1JD24-0AP6","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/3RA2120-1JD24-0AP6 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}}