{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RA2220-4NF27-0AP0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RA2220-4NF27-0AP0","canonicalUrl":"https://aoctrl.com/siemens/3RA2220-4NF27-0AP0","factsUrl":"https://aoctrl.com/api/mcp/products/3RA2220-4NF27-0AP0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RA2220-4NF27-0AP0 reversing starter, S0 size, 28 A AC-3 at 400 V, 690 V max, Class 10, spring-loaded terminals, 35 mm DIN rail.","salesMarkdown":"## Active SIRIUS reversing starter, S0 frame The 3RA2220-4NF27-0AP0: This is a Siemens SIRIUS reversing starter, size S0, combining two contactors and a mechanical interlock in one assembly for forward/reverse motor control. It ships with the 3RT2027-2AP00 contactor and 3RA2921-2AA00 link module pre-assembled. ## Mounting and wiring constraints Mounts vertically on a 35 mm DIN rail via the supplied adapter, or can be screw-mounted. The main circuit uses spring-loaded terminals — no screw torque to verify, but the stripped length and ferrule size matter for a gas-tight connection. Keep 50 mm clearance above, 32 mm in front, 10 mm at the sides, and 10 mm below for airflow and tool access. Dimensions are 269 mm high, 90 mm wide, 130 mm deep — the S0 frame fits standard distribution panels but check the backpanel depth before committing. Operating temperature range is -20 to +60 °C; storage and transport tolerance is -50 to +80 °C.","metaTitle":"Siemens 3RA2220-4NF27-0AP0 SIRIUS Reversing Starter","metaDescription":"Siemens SIRIUS 3RA2220-4NF27-0AP0 reversing starter, 28 A AC-3 at 400 V, Class 10, S0 size. Active production, spring-loaded terminals, DIN rail mount.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Motor Starters"],"specifications":{"Depth":"130 mm","Width":"90 mm","title":"3RA2220-4NF27-0AP0","Height":"269 mm","Upwards":"50 mm","Forwards":"32 mm","at 50 Hz":"0.25","Backwards":"0 mm","Downwards":"10 mm","Trip Class":"CLASS 10","At The Side":"10 mm","Rated Value":"690 V","description":"Load feeder fuseless, Reversing duty 400 V AC, Size S0 23.0...28.0 A 230 V AC Spring-type terminal for installation on standard mounting rail with standard mounting rail adapter (also fulfills type of coordination 1) Type of coordination 2, Iq = 150 kA 1 NO+1 NC (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 230 V rated value":"5 hp","at 400 V rated value":"15 000 kW","at 480 V rated value":"27 A","at 50 Hz rated value":"230 ... 230 V","at 600 V rated value":"27 A","Design Of The Product":"for standard rail or screw mounting","For Main Current Circuit":"spring-loaded terminals","Temperature Compensation":"-20 ... +60 °C","at 110/120 V rated value":"2 hp","at 200/208 V rated value":"7.5 hp","at 220/230 V rated value":"10 hp","at 460/480 V rated value":"20 hp","Of The Supplied Contactor":"3RT2027-2AP00","Of The Supplied Link Module":"3RA2921-2AA00","Size Of The Circuit-Breaker":"S0","at AC-3 rated value maximum":"690 V","at AC-3 at 400 V rated value":"28 A","at AC-3e rated value maximum":"690 V","Substance Prohibitance (Date)":"10/01/2009","at AC-3e at 400 V rated value":"28 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":"3RA2923-1BB2","Design Of The Short-Circuit Trip":"magnetic","Of The Supplied Circuit-Breakers":"3RV2021-4NA20","degree of protection NEMA rating":"other","For Auxiliary And Control Circuit":"spring-loaded terminals","Product Extension Auxiliary Switch":"Yes","Relative Humidity During Operation":"10 ... 95 %","Without Load Current Share Typical":"9.8 W","Surge Voltage Resistance Rated Value":"6 kV","at AC in hot operating state per pole":"6.7 W","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","reference code according to IEC 81346-2:2019":"Q","shock resistance according to IEC 60068-2-27":"6g / 11 ms","Type Of Voltage Of The Control Supply Voltage":"AC","Of The Supplied Standard Mounting Rail Adapter":"3RA2922-1AA00","at 400 V according to IEC 60947-4-1 rated value":"150 000 A","Inductive Power Factor With The Holding Power Of The Coil":"0.25","Mechanical Service Life (Operating Cycles) Of Contactor Typical":"10 000 000","Response Value Current Of Instantaneous Short-Circuit Trip Unit":"364 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":"23 ... 28 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/47be7419a32555d89606fe3df6a8f7df.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=425309&mlfb=3RA2220-4NF27-0AP0"},"ai":{"faq":[{"question":"What is the AC-3 rating at 400 V for this reversing starter?","answer":"This covers most 400 V and 480 V motor circuits."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RA2220-4NF27-0AP0","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/3RA2220-4NF27-0AP0 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}}