{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RA2120-4AA26-0AK6","brand":"Siemens","brandSlug":"siemens","productSlug":"3RA2120-4AA26-0AK6","canonicalUrl":"https://aoctrl.com/siemens/3RA2120-4AA26-0AK6","factsUrl":"https://aoctrl.com/api/mcp/products/3RA2120-4AA26-0AK6","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RA2120-4AA26-0AK6 non-fused load feeder, direct starter, size S0, 7.5 kW at 400 V, Class 10 trip, screw and snap-on 35 mm DIN rail.","salesMarkdown":"## SIRIUS 3RA2 non-fused load feeder — direct starter, size S0 The Siemens 3RA2120-4AA26-0AK6 is a SIRIUS non-fused load feeder configured as a direct starter in size S0. ## Panel fit and clearance — 45 mm wide, size S0 footprint Width is 45 mm, depth 97.1 mm, height 193.1 mm. The unit mounts vertically on a 35 mm DIN rail with screw or snap-on fastening. Clearance requirements: 30 mm upwards, 10 mm forwards, 10 mm downwards, 9 mm at the side, and 0 mm backwards — so it sits flush against the back panel. Size S0 load feeder means the circuit-breaker and contactor are matched in a compact package that fits standard panel layouts. The supplied link module bridges the contactor and overload relay, reducing wiring time and potential errors.","metaTitle":"Siemens 3RA2120-4AA26-0AK6 SIRIUS Non-Fused Load Feeder","metaDescription":"Siemens 3RA2120-4AA26-0AK6 SIRIUS non-fused load feeder, direct starter, size S0, 7.5 kW at 400 V, Class 10 thermal overload, screw and snap-on 35 mm DIN rail.","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":"2 hp","at 400 V rated value":"7 500 W","at 480 V rated value":"15.2 A","at 50 Hz rated value":"110 V","at 500 V rated value":"7 500 W","at 60 Hz rated value":"120 V","at 600 V rated value":"12.2 A","at 690 V rated value":"11 000 W","Design Of The Product":"direct starter","at 110/120 V rated value":"1 hp","at 200/208 V rated value":"3 hp","at 220/230 V rated value":"5 hp","at 460/480 V rated value":"10 hp","at 575/600 V rated value":"10 hp","Of The Supplied Contactor":"3RT2026-1AK60","Of The Supplied Link Module":"3RA2921-1AA00","Size Of The Circuit-Breaker":"S0","at AC-3 rated value maximum":"690 V","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":"3RV2021-4AA10","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":"9.8 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":"5 000 A","at 690 V according to IEC 60947-4-1 rated value":"2 000 A","operational current at AC-3 at 400 V rated value":"15.5 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":"208 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":"11 ... 16 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":"https://cdn.aoctrl.com/06cc5f5c2fa7d18d3ec78f5d05956321.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=247585&mlfb=3RA2120-4AA26-0AK6","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RA2120-4AA26-0AK6/alternatives.json"},"ai":{"faq":[{"question":"What are the key ratings for 3RA2120-4AA26-0AK6?","answer":"The thermal overload is Class 10. It mounts on a 35 mm DIN rail, size S0, with a width of 45 mm."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RA2120-4AA26-0AK6","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/3RA2120-4AA26-0AK6 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}}