{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RA2120-4AD26-0AP6","brand":"Siemens","brandSlug":"siemens","productSlug":"3RA2120-4AD26-0AP6","canonicalUrl":"https://aoctrl.com/siemens/3RA2120-4AD26-0AP6","factsUrl":"https://aoctrl.com/api/mcp/products/3RA2120-4AD26-0AP6","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RA2120-4AD26-0AP6 non-fused motor starter, direct starter design, Size S0, 7.5 kW at 400 V, Class 10 trip, thermal bimetallic overload, includes 3RT2026-1AP60 contactor and 3RA2921-1AA00 link module, 45 mm width, 155 mm depth, 260 mm height, snap-on 60 mm busbar mounting.","salesMarkdown":"## What this SIRIUS starter includes and how it mounts The 3RA2120-4AD26-0AP6 is a factory-assembled SIRIUS non-fused motor starter combining a contactor and thermal overload in one S0-size package. It ships with the 3RT2026-1AP60 contactor and 3RA2921-1AA00 link module pre-wired, which cuts panel assembly time on repetitive motor feeder builds. Mounting is by snapping onto 60 mm busbar systems in a vertical position, with clearance requirements of 30 mm upward, 10 mm forward, 10 mm downward, and 9 mm at the side. The 45 mm width and 155 mm depth fit standard S0 feeder slots in distributed panel layouts. ## Motor power coverage and trip coordination The thermal bimetallic overload release is field-adjustable and compensates for ambient temperature changes during operation from -20 to +60 °C.","metaTitle":"Siemens 3RA2120-4AD26-0AP6 SIRIUS Motor Starter","metaDescription":"Siemens SIRIUS 3RA2120-4AD26-0AP6 non-fused motor starter, 7.5 kW at 400 V, Class 10, S0 size, includes contactor and link module.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Motor Starters"],"specifications":{"Depth":"155 mm","Width":"45 mm","title":"3RA2120-4AD26-0AP6","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 11-16Amp 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":"2 hp","at 400 V rated value":"7 500 W","at 480 V rated value":"15.2 A","at 50 Hz rated value":"176 ... 242 V","at 500 V rated value":"7 500 W","at 60 Hz rated value":"192 ... 264 V","at 600 V rated value":"12.2 A","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":"3RT2026-1AP60","For Main Contacts Stranded":"1 ... 10 mm², 2x (2.5 ... 6 mm²)","Of The Supplied Link Module":"3RA2921-1AA00","Size Of The Circuit-Breaker":"S0","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":"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":"9.4 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","at 500 V according to IEC 60947-4-1 rated value":"100 000 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","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":"208 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":"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,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/3bcbb9a546915b39b4a976c840d44220.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=388341&mlfb=3RA2120-4AD26-0AP6"},"ai":{"faq":[{"question":"What compliance documentation does Siemens provide for 3RA2120-4AD26-0AP6?","answer":"As a SIRIUS industrial control product, it carries CE marking for the European market and is designed to meet IEC/EN 60947-4-1 for motor starters. RoHS and REACH declarations are standard with the manufacturer's documentation package. UL/CSA listings apply for North American installations — verify the specific file number with the factory datasheet."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RA2120-4AD26-0AP6","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/3RA2120-4AD26-0AP6 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}