{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RA2220-4DB27-0AK6","brand":"Siemens","brandSlug":"siemens","productSlug":"3RA2220-4DB27-0AK6","canonicalUrl":"https://aoctrl.com/siemens/3RA2220-4DB27-0AK6","factsUrl":"https://aoctrl.com/api/mcp/products/3RA2220-4DB27-0AK6","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS reversing starter 3RA2220-4DB27-0AK6, S0 size, 11 kW at 400 V AC-3, Class 10, screw terminals, for 35 mm DIN rail.","salesMarkdown":"## What this reversing starter is and what it delivers The Siemens 3RA2220-4DB27-0AK6 is a SIRIUS reversing starter in size S0, combining a contactor pair, a thermal overload relay, and a circuit breaker into one assembly for reversing motor control. The thermal overload release is bimetallic (Class 10 trip class), protecting the motor against sustained overloads. The magnetic short-circuit trip handles fault clearing independently of the overload, so a bolted fault opens the circuit breaker section without waiting for the bimetal to heat. ## Mounting and integration into a panel Envelope dimensions are 265 mm high by 90 mm wide by 120 mm deep, with the mounting position specified as vertical. Main power circuit connections use screw-type terminals, which is the standard for panel builders who prefer a positive clamped connection over spring cages for higher-current reversing circuits. ## What is supplied in the assembly The reversing starter ships as a pre-assembled unit containing the supplied contactor 3RT2027-1AK60, the supplied circuit breaker 3RV2021-4DA10, the supplied link module 3RA2921-1AA00, and the supplied RH assembly kit 3RA2923-1BB1. This is a type of assignment 2 coordination — the circuit breaker and contactor are matched so that under a short circuit the starter remains usable after the fault (no contactor welding), per IEC 60947-4-1.","metaTitle":"Siemens 3RA2220-4DB27-0AK6 SIRIUS Reversing Starter","metaDescription":"Siemens 3RA2220-4DB27-0AK6 SIRIUS reversing starter, 11 kW at 400 V AC-3, Class 10, S0 size. Current-production part sourced to order against an RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Motor Starters"],"specifications":{"Depth":"120 mm","Width":"90 mm","title":"3RA2220-4DB27-0AK6","Height":"265 mm","Upwards":"50 mm","Forwards":"32 mm","Backwards":"0 mm","Downwards":"10 mm","Trip Class":"CLASS 10","At The Side":"10 mm","Rated Value":"690 V","description":"FUSELESS LOAD FEEDER REVERSING OPERATION, AC 400V, S0 18...25A, AC 110/120V 50/60HZ SCREW TERMINAL FOR DIN RAIL MOUNTING, WITH DIN RAIL ADAPTER TYPE OF ASSIGNMENT 2,IQ = 150KA (ALSO TYPE OF ASSIGNMENT 1) 1NO+1NC (CONTACTOR)","During Storage":"-50 ... +80 °C","lifecycle_stage":"current","During Operation":"-20 ... +60 °C","During Transport":"-50 ... +80 °C","Fastening Method":"On adapter for screw and snap-on mounting on 35 mm standard mounting rail","Mounting Position":"vertical","PROFIsafe protocol":"No","Product Brand Name":"SIRIUS","Type Of Assignment":"2","Product Designation":"Reversing starter","Size Of Load Feeder":"S0","PROFINET IO protocol":"No","at 400 V rated value":"11 000 W","at 50 Hz rated value":"88 ... 121 V","at 60 Hz rated value":"96 ... 132 V","Design Of The Product":"for standard rail or screw mounting","For Main Current Circuit":"screw-type terminals","Temperature Compensation":"-20 ... +60 °C","Of The Supplied Contactor":"3RT2027-1AK60","Of The Supplied Link Module":"3RA2921-1AA00","Size Of The Circuit-Breaker":"S0","at AC-3 rated value maximum":"690 V","Substance Prohibitance (Date)":"05/01/2012","Design Of The Overload Release":"thermal (bimetallic)","Design Of The Switching Contact":"electromechanical","Operating Frequency Rated Value":"50 ... 60 Hz","of the supplied RH assembly kit":"3RA2923-1BB1","Design Of The Short-Circuit Trip":"magnetic","Of The Supplied Circuit-Breakers":"3RV2021-4DA10","degree of protection NEMA rating":"other","For Auxiliary And Control Circuit":"screw-type terminals","Product Extension Auxiliary Switch":"Yes","Relative Humidity During Operation":"10 ... 95 %","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","protocol is supported AS-Interface protocol":"No","with high demand rate according to SN 31920":"73 %","shock resistance according to IEC 60068-2-27":"6g / 11 ms","Type Of Voltage Of The Control Supply Voltage":"AC","at 400 V according to IEC 60947-4-1 rated value":"150 000 A","operational current at AC-3 at 400 V rated value":"22 A","Mechanical Service Life (Switching Cycles) Of Contactor Typical":"10 000 000","insulation voltage with degree of pollution 3 at AC rated value":"690 V","Adjustable Current Response Value Current Of The Current-Dependent Overload Release":"18 ... 25 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/1b04d0a4cc40537c33e50cda7d219e86.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=344602&mlfb=3RA2220-4DB27-0AK6"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RA2220-4DB27-0AK6","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/3RA2220-4DB27-0AK6 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}}