{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RA2120-0GA23-0AK6","brand":"Siemens","brandSlug":"siemens","productSlug":"3RA2120-0GA23-0AK6","canonicalUrl":"https://aoctrl.com/siemens/3RA2120-0GA23-0AK6","factsUrl":"https://aoctrl.com/api/mcp/products/3RA2120-0GA23-0AK6","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RA2120-0GA23-0AK6 non-fused motor starter, direct starter design, 180 W at 400 V, Class 10, Size S0, 3-pole, snap-on DIN rail.","salesMarkdown":"The 3RA2120-0GA23-0AK6: The supplied contactor 3RT2023-1AK60 and circuit breaker 3RV2011-0GA10 are matched at the factory — the coordination between the thermal overload (bimetallic) and magnetic short-circuit trip is pre-validated, so you skip the selectivity study for this branch. ## DIN rail footprint and clearance — panel layout constraints Snap-mounted to DIN rail or screw-mounted with a push-in lug — the 45 mm width and 97.1 mm depth fit a standard S0 feeder slot, and the 193.1 mm height leaves room for the busbar stack above. Clearance requirements: 30 mm upwards, 10 mm forwards, 10 mm downwards, and 9 mm at the side — these are the minimum air gaps to maintain the rated insulation voltage of 690 V and pollution degree 3, not optional for the 6 kV surge withstand. Mounting position must be vertical — horizontal orientation shifts the bimetallic trip curve and voids the Class 10 timing guarantee. ## Coil voltage and operating range — control circuit compatibility The coil accepts 88–121 V at 50 Hz and 96–132 V at 60 Hz — a standard 110–120 V control transformer covers both frequencies without a separate tap change. Operating frequency is 50–60 Hz, so the starter works on 50 Hz or 60 Hz supply without derating the motor power ratings listed at 400 V, 500 V, or 690 V. The auxiliary switch extension is available — the product extension auxiliary switch flag is set to Yes, meaning the side-mount auxiliary contact block can be added without modifying the main assembly. No pin-compatible alternative exists within the SIRIUS 3RA2 family for this exact voltage and power combination — the factory-matched contactor and breaker are specific to this order code.","metaTitle":"Siemens 3RA2120-0GA23-0AK6 SIRIUS Motor Starter","metaDescription":"Siemens 3RA2120-0GA23-0AK6 SIRIUS non-fused motor starter, 180 W at 400 V, Class 10, snap-on DIN rail. Active production, sourced to order. Request a quote.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Motor Starters"],"specifications":{"Depth":"97.1 mm","Width":"45 mm","title":"3RA2120-0GA23-0AK6","Height":"193.1 mm","Upwards":"30 mm","Forwards":"10 mm","Backwards":"0 mm","Downwards":"10 mm","Trip Class":"CLASS 10","At The Side":"9 mm","Rated Value":"690 V","description":"Fuseless motor starter Direct start 600VAC Size S0 0.45-0.63A 110/120VAC 50/60HZ screw connection For screw mounting Or 35 mm rail-mounting Type of coordination 2 IQ = 150 KA Also full fills type Of coordination 1 1NO+1NC (contactor)","During Storage":"-50 ... +80 °C","lifecycle_stage":"current","During Operation":"-20 ... +60 °C","During Transport":"-55 ... +80 °C","Fastening Method":"Snap-mounted to DIN rail or screw-mounted with additional push-in lug","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":"180 W","at 50 Hz rated value":"88 ... 121 V","at 500 V rated value":"180 W","at 60 Hz rated value":"96 ... 132 V","at 690 V rated value":"250 W","Design Of The Product":"direct starter","Of The Supplied Contactor":"3RT2023-1AK60","Of The Supplied Link Module":"3RA2921-1AA00","Size Of The Circuit-Breaker":"S00","at AC-3 rated value maximum":"690 V","Design Of The Overload Release":"thermal (bimetallic)","Design Of The Switching Contact":"electromechanical","Operating Frequency Rated Value":"50 ... 60 Hz","Design Of The Short-Circuit Trip":"magnetic","Of The Supplied Circuit-Breakers":"3RV2011-0GA10","Product Extension Auxiliary Switch":"Yes","Surge Voltage Resistance Rated Value":"6 kV","Number Of Poles For Main Current Circuit":"3","Product Function Short Circuit Protection":"Yes","apparent holding power of magnet coil at AC":"7.2 VA","number of NC contacts for auxiliary contacts":"1","number of NO contacts for auxiliary contacts":"1","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":"0.6 A","Type Of Electrical Connection For Main Current Circuit":"screw-type terminals","Inductive Power Factor With The Holding Power Of The Coil":"0.28","Mechanical Service Life (Operating Cycles) Of Contactor Typical":"10 000 000","Response Value Current Of Instantaneous Short-Circuit Trip Unit":"8.19 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":"0.45 ... 0.63 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/5f8fd17cb1549836db54694f9ae9fb9a.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=109850&mlfb=3RA2120-0GA23-0AK6"},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to 3RA2120-0GA23-0AK6 in this Motor Starters family?","answer":"No pin-compatible alternative exists within the SIRIUS 3RA2 family for this specific voltage and power combination — the factory-matched contactor and circuit breaker are unique to this order code."},{"question":"Where can I buy 3RA2120-0GA23-0AK6 and how do I get a price?","answer":"The 3RA2120-0GA23-0AK6 is sourced to order through independent distribution — submit an RFQ for current pricing and availability against your BOM quantity."},{"question":"What is 3RA2120-0GA23-0AK6's listed depth (97.1 mm) on this Motor Starters line?","answer":"The depth is 97.1 mm — this is the dimension from the DIN rail mounting surface to the front face of the starter, not including the operator or auxiliary block."},{"question":"What is 3RA2120-0GA23-0AK6's listed width (45 mm) on this Motor Starters line?","answer":"The width is 45 mm — this matches the standard S0 feeder slot width on a DIN rail panel."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RA2120-0GA23-0AK6","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/3RA2120-0GA23-0AK6 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}}