{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RA2120-1JA24-0AK6","brand":"Siemens","brandSlug":"siemens","productSlug":"3RA2120-1JA24-0AK6","canonicalUrl":"https://aoctrl.com/siemens/3RA2120-1JA24-0AK6","factsUrl":"https://aoctrl.com/api/mcp/products/3RA2120-1JA24-0AK6","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RA2120-1JA24-0AK6, S0 size, non-fused load feeder, direct starter, CLASS 10, 45 mm width, 97.1 mm depth, 193.1 mm height, screw and snap-on mounting onto 35 mm DIN rail.","salesMarkdown":"## SIRIUS 3RA2120-1JA24-0AK6 — Non-Fused Load Feeder, S0 Size The Siemens 3RA2120-1JA24-0AK6 is a SIRIUS S0 non-fused load feeder configured as a direct starter. It ships as a pre-assembled unit integrating a 3RT2024-1AK60 contactor and a 3RA2921-1AA00 link module, so the panel builder gets a single part number for the motor branch — no separate contactor, overload, and wiring links to source and assemble. Rated for motor duty up to 4 000 W at 400 V (AC-3) and 7.5 hp at 575/600 V, with a maximum operational voltage of 690 V AC-3. The trip class is CLASS 10, meaning it clears a stalled-rotor overload fast enough to protect standard IEC induction motors — the standard choice for pump, fan, and conveyor starts where the acceleration time stays under 10 seconds. The 45 mm width (S0 frame) fits standard panel layouts; the 97.1 mm depth leaves clearance behind the gland plate.","metaTitle":"Siemens 3RA2120-1JA24-0AK6 SIRIUS Fuseless Load Feeder","metaDescription":"Siemens 3RA2120-1JA24-0AK6 SIRIUS S0 non-fused load feeder. Direct starter, CLASS 10 trip, 45 mm wide, screw/snap-on DIN rail. Active production.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Motor Starters"],"specifications":{"Depth":"97.1 mm","Width":"45 mm","Height":"193.1 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","During Storage":"-50 ... +80 °C","lifecycle_stage":"current","During Operation":"-20 ... +60 °C","During Transport":"-50 ... +80 °C","Fastening Method":"screw and snap-on mounting onto 35 mm DIN rail","Mounting Position":"vertical","Product Brand Name":"SIRIUS","Type Of Assignment":"2","Degree Of Pollution":"3","Product Designation":"non-fused load feeders 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":"110 V","at 500 V rated value":"5 500 W","at 60 Hz rated value":"120 V","at 600 V rated value":"9.19 A","at 690 V rated value":"7 500 W","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":"3RT2024-1AK60","Of The Supplied Link Module":"3RA2921-1AA00","Size Of The Circuit-Breaker":"S0","at AC-3 rated value maximum":"690 V","Substance Prohibitance (Date)":"10/01/2009","Design Of The Overload Release":"thermal (bimetallic)","Design Of The Switching Contact":"electromechanical","Operating Frequency Rated Value":"50 ... 60 Hz","Design Of The Short-Circuit Trip":"magnetic","Of The Supplied Circuit-Breakers":"3RV2021-1JA10","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":"8.5 VA","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","at 500 V according to IEC 60947-4-1 rated value":"42 000 A","at 690 V according to IEC 60947-4-1 rated value":"4 000 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","Mechanical Service Life (Operating 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","Type Of Connectable Conductor Cross-Sections For Main Contacts Stranded":"1 ... 10 mm², 2x (2.5 ... 6 mm²)","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,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=504995&mlfb=3RA2120-1JA24-0AK6","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RA2120-1JA24-0AK6/alternatives.json"},"ai":{"faq":[{"question":"Does Siemens 3RA2120-1JA24-0AK6 include overload protection?","answer":"Yes, the 3RA2120-1JA24-0AK6 is a non-fused load feeder configured as a direct starter, which integrates overload protection via the included link module and contactor assembly. The trip class is CLASS 10, protecting standard induction motors against stalled-rotor overloads."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RA2120-1JA24-0AK6","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/3RA2120-1JA24-0AK6 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}}