{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RA2220-0KB23-0BB4","brand":"Siemens","brandSlug":"siemens","productSlug":"3RA2220-0KB23-0BB4","canonicalUrl":"https://aoctrl.com/siemens/3RA2220-0KB23-0BB4","factsUrl":"https://aoctrl.com/api/mcp/products/3RA2220-0KB23-0BB4","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RA2 non-fused reversing motor starter, size S0, 370 W at 400 V AC-3, 24 V coil, Class 10 thermal bimetallic overload, snap-on 35 mm DIN rail.","salesMarkdown":"## Reversing motor starter for compact reversing duty The Siemens 3RA2220-0KB23-0BB4 is a SIRIUS 3RA2 non-fused reversing motor starter — a factory-assembled combination of a reversing contactor pair, a thermal overload relay, and a circuit-breaker link module in one package, sized S0. ## Snap-on DIN rail mounting with clear clearance zones Snaps onto a 35 mm standard rail in vertical mounting position — the 265 mm height, 90 mm width, and 130 mm depth fit the S0 feeder footprint common in Siemens motor control centers. Clearance requirements: 30 mm upward, 10 mm forward, 10 mm downward, 9 mm at the side, and 0 mm backward — plan the enclosure depth and gland plate layout accordingly. ## Supplied as a complete assembly with key accessories Ships with the 3RT2023-1BB40 contactor, 3RA2921-1BA00 link module, 3RA2922-1AA00 busbar adapter, and 3RA2923-1BB1 RH assembly kit — everything needed for a reversing starter except the main circuit protection. Main contact wiring accepts 1 to 10 mm² stranded or 2x (2.5 to 6 mm²), with AWG equivalents 2x (16 to 12) or 2x (14 to 8).","metaTitle":"Siemens 3RA2220-0KB23-0BB4 SIRIUS Reversing Motor Starter","metaDescription":"Siemens 3RA2220-0KB23-0BB4 SIRIUS reversing motor starter, 370 W at 400 V AC-3, Class 10 thermal overload, 24 V coil, snap-on DIN rail.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Motor Starters"],"specifications":{"Depth":"130 mm","Width":"90 mm","Height":"265 mm","Upwards":"30 mm","Forwards":"10 mm","Backwards":"0 mm","Downwards":"10 mm","Trip Class":"CLASS 10","At The Side":"9 mm","Rated Value":"24 V","During Storage":"-50 ... +80 °C","lifecycle_stage":"current","During Operation":"-20 ... +60 °C","During Transport":"-55 ... +80 °C","Fastening Method":"snap-on fastening on 35 mm standard rail","Mounting Position":"vertical","Product Brand Name":"SIRIUS","Type Of Assignment":"2","Degree Of Pollution":"3","Product Designation":"non-fused motor starter 3RA2","Size Of Load Feeder":"S0","at 400 V rated value":"370 W","at 480 V rated value":"1.19 A","at 500 V rated value":"550 W","at 600 V rated value":"1.25 A","at 690 V rated value":"750 W","Design Of The Product":"reversing starter","at 460/480 V rated value":"0.5 hp","at 575/600 V rated value":"0.5 hp","Of The Supplied Contactor":"3RT2023-1BB40","For Main Contacts Stranded":"1 ... 10 mm², 2x (2.5 ... 6 mm²)","Of The Supplied Link Module":"3RA2921-1BA00","Size Of The Circuit-Breaker":"S00","at AC-3 rated value maximum":"690 V","Design Of The Overload Release":"thermal (bimetallic)","Of The Supplied Busbar Adapter":"3RA2922-1AA00","Design Of The Switching Contact":"electromechanical","Operating Frequency Rated Value":"50 ... 60 Hz","at AWG cables for main contacts":"2x (16 ... 12), 2x (14 ... 8)","of the supplied RH assembly kit":"3RA2923-1BB1","Design Of The Short-Circuit Trip":"magnetic","Of The Supplied Circuit-Breakers":"3RV2011-0KA10","Product Extension Auxiliary Switch":"Yes","holding power of magnet coil at DC":"5.9 W","Surge Voltage Resistance Rated Value":"6 kV","Number Of Poles For Main Current Circuit":"3","Product Function Short Circuit Protection":"Yes","number of NC contacts for auxiliary contacts":"2","number of NO contacts for auxiliary contacts":"2","shock resistance according to IEC 60068-2-27":"6g / 11 ms","Of The Supplied Standard Mounting Rail Adapter":"3RA2922-1AA00","at 400 V according to IEC 60947-4-1 rated value":"153 000 A","operational current at AC-3 at 400 V rated value":"1.1 A","Type Of Electrical Connection For Main Current Circuit":"screw-type terminals","Mechanical Service Life (Switching Cycles) Of Contactor Typical":"10 000 000","Response Value Current Of Instantaneous Short-Circuit Trip Unit":"16.25 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":"0.9 ... 1.25 A","Connectable Conductor Cross-Section For Main Contacts Finely Stranded With Core End Processing":"1 ... 6 mm²"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/8b5ccbd95683977c6d5146496c5530de.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=443930&mlfb=3RA2220-0KB23-0BB4","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RA2220-0KB23-0BB4/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy the 3RA2220-0KB23-0BB4 and get a price?","answer":"This reversing motor starter is available to order — submit an RFQ and we will confirm availability and current pricing for your quantity. No stock-holding claim; confirmed at quote time."},{"question":"What compliance documentation does Siemens provide for this motor starter?","answer":"As a current-production SIRIUS device, it carries the standard Siemens declarations (CE, UKCA, RoHS, REACH) and IEC/UL certifications typical for the 3RA2 series. Specific documentation is included with the shipment."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RA2220-0KB23-0BB4","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/3RA2220-0KB23-0BB4 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}}