{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RA2220-4BD27-0AP0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RA2220-4BD27-0AP0","canonicalUrl":"https://aoctrl.com/siemens/3RA2220-4BD27-0AP0","factsUrl":"https://aoctrl.com/api/mcp/products/3RA2220-4BD27-0AP0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RA2220-4BD27-0AP0 reversing starter, Size S0, 20 A AC-3 at 400 V, Class 10, for snapping onto 60 mm busbar systems, screw-type terminals.","salesMarkdown":"## Reversing starter for 60 mm busbar systems The Siemens 3RA2220-4BD27-0AP0 is a SIRIUS reversing starter in Size S0, combining a contactor reversing pair and overload relay in one unit that snaps directly onto 60 mm busbar systems. ## Mounting and clearance constraints Designed for vertical mounting on 60 mm busbar systems, the 90 mm width and 260 mm height fit standard S0 feeder footprints; depth is 155 mm including the contactor and link module. Required clearances: 50 mm upward, 32 mm forward, 10 mm sideways, and 10 mm downward — plan these into the enclosure layout to avoid thermal recirculation and maintain the -20 to +60 °C operating range. The supplied contactor (3RT2027-1AP00) and link module (3RA2921-1AA00) are pre-assembled; main circuit connections use screw-type terminals, so torque the connections to the values in the product drawing during installation. ## Rated at multiple voltages Horsepower ratings span from 3 hp at 230 V to 20 A at 480 V (15 hp) and 20 A at 600 V — the 7.5 hp at 400 V (7 500 kW appears to be a data artifact; the 20 A at 400 V figure governs the motor sizing decision). Rated insulation voltage is 690 V, and the unit withstands storage and transport from -50 to +80 °C — the -20 to +60 °C operating range with temperature compensation covers most indoor industrial environments. For volume purchases or scheduled releases, lead time and pricing are confirmed at RFQ; the unit can be specified into new designs or used as a direct replacement for existing SIRIUS S0 reversing starter installations.","metaTitle":"Siemens 3RA2220-4BD27-0AP0 SIRIUS Reversing Starter","metaDescription":"Siemens 3RA2220-4BD27-0AP0 SIRIUS reversing starter, 20 A at 400 V AC-3, Size S0, Class 10, for 60 mm busbars. Active production, quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Motor Starters"],"specifications":{"Depth":"155 mm","Width":"90 mm","Height":"260 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","During Storage":"-50 ... +80 °C","lifecycle_stage":"current","During Operation":"-20 ... +60 °C","During Transport":"-50 ... +80 °C","Fastening Method":"for snapping onto 60 mm busbar systems","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":"3 hp","at 400 V rated value":"7 500 kW","at 480 V rated value":"20 A","at 50 Hz rated value":"230 ... 230 V","at 600 V rated value":"20 A","Design Of The Product":"for 60 mm busbars","For Main Current Circuit":"screw-type terminals","Temperature Compensation":"-20 ... +60 °C","at 110/120 V rated value":"1.5 hp","at 200/208 V rated value":"7.5 hp","at 220/230 V rated value":"7.5 hp","at 460/480 V rated value":"15 hp","Of The Supplied Contactor":"3RT2027-1AP00","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":"20 A","at AC-3e rated value maximum":"690 V","Substance Prohibitance (Date)":"10/01/2009","at AC-3e at 400 V rated value":"20 A","Design Of The Overload Release":"thermal (bimetallic)","Design Of The Switching Contact":"electromechanical","Operating Frequency Rated Value":"50 ... 60 Hz","of the supplied RS assembly kit":"3RA2923-1DB1","Design Of The Short-Circuit Trip":"magnetic","Of The Supplied Circuit-Breakers":"3RV2021-4BA10","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 %","Without Load Current Share Typical":"9.8 W","Surge Voltage Resistance Rated Value":"6 kV","at AC in hot operating state per pole":"5.8 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","with high demand rate according to SN 31920":"73 %","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","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":"260 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":"13 ... 20 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/ab3b3a78b47681f6bfc713d81229ff2f.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=21469&mlfb=3RA2220-4BD27-0AP0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RA2220-4BD27-0AP0/alternatives.json"},"ai":{"faq":[{"question":"How is 3RA2220-4BD27-0AP0 supplied and quoted?","answer":"The reversing starter is supplied as a complete assembly including the 3RT2027-1AP00 contactor and 3RA2921-1AA00 link module."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RA2220-4BD27-0AP0","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/3RA2220-4BD27-0AP0 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:15:54.622Z","lastPublished":"2026-09-02T08:15:54.622Z","indexable":true}}