{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RA2220-4EB27-0AK6","brand":"Siemens","brandSlug":"siemens","productSlug":"3RA2220-4EB27-0AK6","canonicalUrl":"https://aoctrl.com/siemens/3RA2220-4EB27-0AK6","factsUrl":"https://aoctrl.com/api/mcp/products/3RA2220-4EB27-0AK6","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS reversing starter, 3RA2220-4EB27-0AK6, size S0, 29 A AC-3 at 400 V, CLASS 10 trip, 88-132 VAC coil, screw terminals, DIN rail or screw mount.","salesMarkdown":"## Active production — what that means for your BOM line The 3RA2220-4EB27-0AK6: The unit ships as a factory-assembled combination: a 3RT2027-1AK60 contactor paired with a 3RA2921-1AA00 link module, pre-configured for reversing duty. No separate interlock wiring or mechanical linkage to source. ## 29 A AC-3 at 400 V — the rating that decides the motor The AC-3 switching capacity is 29 A at 400 V, which corresponds to 15 kW motor load at that voltage. That is the figure to match against your motor nameplate FLA — not the thermal overload setting, but the contactor's ability to break the motor inrush without welding. The AC-3e rating mirrors the AC-3 figure at 29 A, confirming the electronic overload coordination. That is the standard for standard-start induction motors; if you are running a high-inertia load that needs a longer acceleration ramp, CLASS 10 may nuisance-trip. ## Coil voltage and control wiring The coil accepts 88–121 V at 50 Hz and 96–132 V at 60 Hz. That is a standard control transformer secondary range — 110 V or 120 V nominal. No separate DC supply needed; this is an AC-operated contactor. Main circuit terminals are screw-type, sized for the S0 feeder. The control circuit terminals are also screw-type on the link module. Torque to the values stamped on the contactor housing — overtightening strips the threads in the thermoplastic base. ## Mounting and panel fit — DIN rail or screw Mounts on a 35 mm DIN rail via the included adapter, or directly with screws through the base. The mounting position must be vertical — horizontal mounting changes the thermal overload calibration. Dimensions: 120 mm deep, 90 mm wide, 265 mm tall. Clearance: 50 mm above, 32 mm in front, 10 mm at the sides and below. The S0 frame size means the contactor and overload share the same width — no extra panel space for the reversing interlock. ## Environmental limits and compliance Operating temperature range is -20 to +60 °C with temperature compensation active across that band. Storage and transport: -50 to +80 °C.","metaTitle":"Siemens 3RA2220-4EB27-0AK6 SIRIUS Reversing Starter","metaDescription":"Siemens SIRIUS reversing starter 3RA2220-4EB27-0AK6, size S0, 29 A AC-3 at 400 V, CLASS 10, 88-132 VAC coil. Active production, quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Motor Starters"],"specifications":{"Depth":"120 mm","Width":"90 mm","title":"3RA2220-4EB27-0AK6","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 27...32A, 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 DIN 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":"15 000 kW","at 480 V rated value":"14 A","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","at 220/230 V rated value":"10 hp","at 460/480 V rated value":"20 hp","at 575/600 V rated value":"25 hp","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","at AC-3 at 400 V rated value":"29 A","at AC-3e rated value maximum":"690 V","Substance Prohibitance (Date)":"05/01/2012","at AC-3e at 400 V rated value":"29 A","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":"3RV2021-4EA10","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","Mechanical Service Life (Operating 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":"27 ... 32 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/085875fc2a2057f2ba008b85f2dd1b90.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=442942&mlfb=3RA2220-4EB27-0AK6"},"ai":{"faq":[{"question":"What is the AC-3 rating at 400 V for this reversing starter?","answer":"29 A AC-3 at 400 V, corresponding to 15 kW motor load. The AC-3e rating is identical at 29 A."},{"question":"What coil voltage does 3RA2220-4EB27-0AK6 use?","answer":"88–121 V at 50 Hz and 96–132 V at 60 Hz. It is an AC-operated coil, not DC."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RA2220-4EB27-0AK6","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/3RA2220-4EB27-0AK6 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}}