{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RA2120-1AA23-0AP6","brand":"Siemens","brandSlug":"siemens","productSlug":"3RA2120-1AA23-0AP6","canonicalUrl":"https://aoctrl.com/siemens/3RA2120-1AA23-0AP6","factsUrl":"https://aoctrl.com/api/mcp/products/3RA2120-1AA23-0AP6","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RA2120-1AA23-0AP6 non-fused motor starter, size S0, direct starter, 550 W at 400 V, Class 10, thermal bimetallic overload, magnetic short-circuit trip, snap-on DIN rail.","salesMarkdown":"## What this SIRIUS 3RA2 packs into a 45 mm footprint The Siemens 3RA2120-1AA23-0AP6 is a non-fused motor starter from the SIRIUS 3RA2 family, size S0 — a direct starter that combines a contactor and a thermal bimetallic overload relay with a magnetic short-circuit trip in one 45 mm wide package. Rated for AC-3 duty up to 690 V, it delivers 550 W at 400 V (0.1 hp at 230 V, 0.75 hp at 460/480 V and 575/600 V) — sized for small motor loads like pumps, fans, and conveyors in a control panel. The starter ships with a 3RT2023-1AP60 contactor and a 3RA2921-1AA00 link module; the circuit-breaker section is size S00. ## Mounting, clearances, and panel fit Snap-mounted onto a DIN rail or screw-mounted with an additional push-in lug — mounting position is vertical only. Dimensions: 45 mm wide, 193.1 mm high, 97.1 mm deep. Required clearances: 30 mm upwards, 10 mm forwards, 10 mm downwards, 9 mm at the side, and 0 mm backwards — plan the enclosure depth and ventilation accordingly. Pollution degree 3 (industrial environment) and assignment type 2 coordination mean the starter handles typical panel contaminants and fault coordination with upstream devices.","metaTitle":"Siemens 3RA2120-1AA23-0AP6 SIRIUS Motor Starter","metaDescription":"Siemens 3RA2120-1AA23-0AP6 SIRIUS non-fused motor starter, size S0, 550 W at 400 V, Class 10, snap-on DIN rail. Active production, quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Motor Starters"],"specifications":{"Depth":"97.1 mm","Width":"45 mm","title":"3RA2120-1AA23-0AP6","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","description":"Fuseless motor starter Direct start 600VAC Size S0 1.1-1.6A 220/240VAC 50/60HZ screw connection For screw mounting Or 35 mm rail-mounting 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":"Snap-mounted to DIN rail or screw-mounted with additional push-in lug","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":"0.1 hp","at 400 V rated value":"550 W","at 480 V rated value":"1.6 A","at 50 Hz rated value":"176 ... 242 V","at 500 V rated value":"550 W","at 60 Hz rated value":"192 ... 264 V","at 600 V rated value":"1.3 A","at 690 V rated value":"1 100 W","Design Of The Product":"direct starter","at 460/480 V rated value":"0.75 hp","at 575/600 V rated value":"0.75 hp","Of The Supplied Contactor":"3RT2023-1AP60","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)","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":"3RV2011-1AA10","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":"1.5 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 (Operating Cycles) Of Contactor Typical":"10 000 000","Response Value Current Of Instantaneous Short-Circuit Trip Unit":"20.8 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":"1.1 ... 1.6 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/abe9b34ee29fba2d93ffaadeb2f47f17.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=373096&mlfb=3RA2120-1AA23-0AP6"},"ai":{"faq":[{"question":"What is the 3RA2120-1AA23-0AP6 rated for at 400 V?","answer":"At 400 V, 50 Hz, it is rated 550 W. At 480 V the current draw is 1.6 A; at 600 V it is 1.3 A. The maximum AC-3 operating voltage is 690 V."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RA2120-1AA23-0AP6","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/3RA2120-1AA23-0AP6 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}}