{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RA2220-0KD23-0BB4","brand":"Siemens","brandSlug":"siemens","productSlug":"3RA2220-0KD23-0BB4","canonicalUrl":"https://aoctrl.com/siemens/3RA2220-0KD23-0BB4","factsUrl":"https://aoctrl.com/api/mcp/products/3RA2220-0KD23-0BB4","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RA2 non-fused reversing motor starter, size S0, 24 V DC coil, CLASS 10 thermal bimetallic overload relay, 370 W at 400 V, 750 W at 690 V, snaps onto 60 mm busbar systems.","salesMarkdown":"## Reversing starter package — two directions, one footprint The 3RA2220-0KD23-0BB4 is a SIRIUS non-fused reversing motor starter — two contactors and a thermal overload relay in a single size S0 housing, saving panel space over two separate starters for bidirectional motor control. The 24 V DC control coil keeps the control circuit isolated from the power side — common in PLC-driven panels. The thermal bimetallic overload relay provides CLASS 10 trip protection, matching standard motor startup profiles for fans and pumps. Type of assignment 2 coordination means the starter clears a fault without damage to itself — the upstream short-circuit protective device must be sized per the coordination tables. ## Mounting and clearances — busbar snap-on, vertical only Snaps directly onto 60 mm busbar systems via the supplied busbar adapter (8US1251-5NT10). Mounting position is vertical only — horizontal mounting derates the thermal overload and may cause nuisance trips. Clearance requirements: 30 mm upwards, 10 mm forwards, 10 mm downwards, 9 mm at the sides, and 0 mm backwards. The 165 mm depth fits standard 200 mm deep enclosures with room for wiring ducts. Operating temperature range -20 to +60 °C, storage -50 to +80 °C. Degree of pollution 3 — suitable for industrial environments with conductive dust or occasional condensation. ## Supplied components and wiring The starter ships with the contactor (3RT2023-1BB40), link module (3RA2921-1BA00), busbar adapter (8US1251-5NT10), and RS assembly kit (3RA2923-1DB1) — everything needed for a reversing configuration except the upstream breaker. Main contact wire range: 1 to 10 mm² stranded, or 2x (2.5 to 6 mm²). AWG equivalents: 2x (16 to 12) or 2x (14 to 8). The circuit-breaker size is S00 — confirm the breaker frame matches the coordination study.","metaTitle":"Siemens 3RA2220-0KD23-0BB4 SIRIUS reversing motor starter","metaDescription":"Siemens SIRIUS 3RA2220-0KD23-0BB4 reversing motor starter, size S0, 24 VDC coil, CLASS 10 thermal overload. Current production — sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Motor Starters"],"specifications":{"Depth":"165 mm","Width":"90 mm","title":"3RA2220-0KD23-0BB4","Height":"260 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","description":"Fuseless motor starter Reversing operation 600VAC Size S0 0.9-1.25A 24V DC screw connection For snapping onto 60 mm busbar systems Type of coordination 2 IQ = 150 KA Also full fills type Of coordination 1 1NO+1NC (per contactor)","During Storage":"-50 ... +80 °C","lifecycle_stage":"current","During Operation":"-20 ... +60 °C","During Transport":"-55 ... +80 °C","Fastening Method":"for snapping onto 60 mm busbar systems","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":"8US1251-5NT10","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 RS assembly kit":"3RA2923-1DB1","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","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,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/3514619db9354c8219ff3766882aaae4.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=522&mlfb=3RA2220-0KD23-0BB4"},"ai":{"faq":[{"question":"What voltage does the 3RA2220-0KD23-0BB4 control coil use?","answer":"The control coil is rated 24 V DC. This is the standard voltage for PLC-driven control panels — the coil draws from the same 24 VDC power supply as the digital outputs."},{"question":"What motor power can the 3RA2220-0KD23-0BB4 handle at 400 V?","answer":"At 690 V it handles 750 W. The CLASS 10 thermal overload matches standard induction motor startup profiles."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RA2220-0KD23-0BB4","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/3RA2220-0KD23-0BB4 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}