{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RA2220-4NB27-0BB4","brand":"Siemens","brandSlug":"siemens","productSlug":"3RA2220-4NB27-0BB4","canonicalUrl":"https://aoctrl.com/siemens/3RA2220-4NB27-0BB4","factsUrl":"https://aoctrl.com/api/mcp/products/3RA2220-4NB27-0BB4","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RA2220-4NB27-0BB4 reversing starter, size S0, 15 kW at 400 V AC-3, CLASS 10, 24 V DC coil, screw terminals, DIN rail or screw mounting.","salesMarkdown":"## Active production — what that means for your BOM line The 3RA2220-4NB27-0BB4: The 24 V DC control voltage is common across modern PLC outputs, keeping the control transformer and wiring consistent. The unit ships with the contactor 3RT2027-1BB40, the circuit breaker 3RV2021-4NA10, the link module 3RA2921-1BA00, and the RH assembly kit 3RA2923-1BB1 — all pre-assembled and tested as a matched set. This eliminates the procurement and assembly coordination of sourcing each component separately. ## Mounting and panel integration — size S0 footprint The reversing starter measures 90 mm wide by 265 mm high by 130 mm deep, fitting the standard S0 feeder format. It mounts on a 35 mm DIN rail via the supplied adapter, or directly with screws — the adapter supports both snap-on and screw-fixed installation. Clearance requirements are specified: 50 mm upward, 32 mm forward, 10 mm downward, 10 mm at the side, and 0 mm backward. For a panel layout, this means the unit can sit flush against the backplane but needs 50 mm above for cable entry and arc deflection, and 32 mm in front for the operator access. Mounting position is vertical only, with an operating temperature range of -20 to +60 °C. The thermal bimetallic overload relay includes temperature compensation across that same range, so the trip curve stays accurate regardless of enclosure ambient temperature. ## Trip class and protection coordination This is the standard for standard-start induction motors — it allows the starting inrush to pass while protecting the motor winding from a locked-rotor condition. The short-circuit trip is magnetic (instantaneous), paired with the supplied circuit breaker 3RV2021-4NA10. For coordination purposes, this breaker provides Type 2 coordination with the contactor, meaning after a short-circuit fault the starter can be re-energized without replacing the contactor — only the breaker may need resetting. Both main and auxiliary/control circuits use screw-type terminals, rated for the S0 current range. The product extension allows adding an auxiliary switch block if the application needs additional status feedback beyond the built-in contacts. ## Procurement — availability and documentation Compliance documentation includes RoHS substance prohibition dated 10/01/2009, and the NEMA rating is classified as 'other' — this unit is designed to IEC/EN standards, not NEMA. For audit purposes, the manufacturer provides a declaration of conformity covering the applicable directives. The unit operates at 50/60 Hz, rated for AC-3 duty up to 690 V maximum. The 24 V DC coil draws from a standard 24 VDC control supply — confirm the control transformer sizing includes the inrush of both contactors in the reversing pair.","metaTitle":"Siemens 3RA2220-4NB27-0BB4 SIRIUS Reversing Starter","metaDescription":"Siemens 3RA2220-4NB27-0BB4 SIRIUS reversing starter, size S0, 15 kW at 400 V AC-3, CLASS 10, 24 V DC coil, screw terminals. Active production, quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Motor Starters"],"specifications":{"Depth":"130 mm","Width":"90 mm","title":"3RA2220-4NB27-0BB4","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":"24 ... 24 V","description":"Load feeder fuseless, Reversing duty 400 V AC, Size S0 23.0...28.0 A 24 V DC screw 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 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":"15 000 W","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":"3RT2027-1BB40","Of The Supplied Link Module":"3RA2921-1BA00","Size Of The Circuit-Breaker":"S0","at AC-3 rated value maximum":"690 V","Substance Prohibitance (Date)":"10/01/2009","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":"3RV2021-4NA10","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","protocol is supported AS-Interface protocol":"No","shock resistance according to IEC 60068-2-27":"6g / 11 ms","Type Of Voltage Of The Control Supply Voltage":"DC","at 400 V according to IEC 60947-4-1 rated value":"150 000 A","operational current at AC-3 at 400 V rated value":"28 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":"23 ... 28 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/d56c8bee21a25ea85e8ac8d265d85b68.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=469046&mlfb=3RA2220-4NB27-0BB4"},"ai":{"faq":[{"question":"How do I get current pricing and availability for 3RA2220-4NB27-0BB4?","answer":"Submit a request through the storefront — the sourcing team will provide a current quote with lead time from authorized distribution channels."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RA2220-4NB27-0BB4","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/3RA2220-4NB27-0BB4 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}}