{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RA2220-1CB23-0BB4","brand":"Siemens","brandSlug":"siemens","productSlug":"3RA2220-1CB23-0BB4","canonicalUrl":"https://aoctrl.com/siemens/3RA2220-1CB23-0BB4","factsUrl":"https://aoctrl.com/api/mcp/products/3RA2220-1CB23-0BB4","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RA2220-1CB23-0BB4 non-fused reversing motor starter, S0 size, 750 W at 400 V AC-3, Class 10 thermal bimetallic overload, 24 V DC coil, snap-on 35 mm DIN rail.","salesMarkdown":"## Reversing starter, S0 frame, 24 V DC coil The Siemens 3RA2220-1CB23-0BB4 is a SIRIUS non-fused reversing motor starter in the S0 size, meaning it integrates a pair of contactors mechanically interlocked for forward/reverse control of a three-phase motor, plus a thermal bimetallic overload relay, all in one DIN-rail-mounted package. The control coil is 24 V DC, a common PLC-level signal voltage that avoids the inrush issues of AC coils in high-cycle reversing applications. ## Class 10 overload and thermal design This matters for a reversing starter because the frequent plugging and reversing cycles generate additional heating in the rotor; the Class 10 characteristic must be coordinated with the motor's thermal withstand curve to avoid nuisance trips during normal reversing duty. ## Snap-on DIN rail mounting and clearances Snap-on fastening on 35 mm DIN rail, vertical mounting position only — the S0 footprint is 90 mm wide, 130 mm deep, 265 mm tall, and requires 30 mm clearance upward, 10 mm forward, 10 mm downward, and 9 mm at the sides for airflow and wiring access. The supplied components include the 3RT2023-1BB40 contactor, the 3RA2921-1BA00 link module, the 3RA2922-1AA00 busbar adapter, and the 3RA2923-1BB1 RH assembly kit — everything needed for a reversing configuration except the upstream circuit breaker (size S00).","metaTitle":"Siemens 3RA2220-1CB23-0BB4 SIRIUS Reversing Starter","metaDescription":"Siemens 3RA2220-1CB23-0BB4 SIRIUS non-fused reversing motor starter, 750W at 400V AC-3, Class 10 thermal overload, 24V DC coil, S0 size, snap-on 35mm 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 DIN 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 230 V rated value":"0.17 hp","at 400 V rated value":"750 W","at 480 V rated value":"2.15 A","at 500 V rated value":"1 100 W","at 600 V rated value":"2.24 A","Design Of The Product":"reversing starter","at 200/208 V rated value":"0.5 hp","at 220/230 V rated value":"0.5 hp","at 460/480 V rated value":"1 hp","at 575/600 V rated value":"1.5 hp","Of The Supplied Contactor":"3RT2023-1BB40","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","of the supplied RH assembly kit":"3RA2923-1BB1","Design Of The Short-Circuit Trip":"magnetic","Of The Supplied Circuit-Breakers":"3RV2011-1CA10","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":"1.9 A","Type Of Electrical Connection For Main Current Circuit":"screw-type terminals","Mechanical Service Life (Operating Cycles) Of Contactor Typical":"10 000 000","Response Value Current Of Instantaneous Short-Circuit Trip Unit":"32.5 A","insulation voltage with degree of pollution 3 at AC rated value":"690 V","Type Of Connectable Conductor Cross-Sections For Main Contacts Stranded":"1 ... 10 mm², 2x (2.5 ... 6 mm²)","Adjustable Current Response Value Current Of The Current-Dependent Overload Release":"1.8 ... 2.5 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/30312999873c6dae5cabd4ec0f8ffb52.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=445115&mlfb=3RA2220-1CB23-0BB4","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RA2220-1CB23-0BB4/alternatives.json"},"ai":{"faq":[{"question":"What is the 3RA2220-1CB23-0BB4 rated for at 400 V?","answer":"It is rated 750 W at 400 V AC-3, which is the standard motor-switching duty cycle — sufficient for a 1 kW (1.5 hp) motor at 400 V three-phase."},{"question":"What control voltage does this reversing starter require?","answer":"The coil is 24 V DC, a standard PLC-level signal that eliminates the AC coil hum and inrush issues common in high-cycle reversing applications."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RA2220-1CB23-0BB4","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/3RA2220-1CB23-0BB4 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}}