{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1120-3ED12-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1120-3ED12-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1120-3ED12-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1120-3ED12-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1120-3ED12-0AA0, 1-pole molded case circuit breaker, 20 A rated current, TM210 thermal-magnetic release, 52.5 kA at 240 V, 7.5 kA at 415 V.","salesMarkdown":"The continuous current rating holds at 20 A from 40 °C through 55 °C, then derates to 19 A at 60 °C and above, so in a warm panel you lose 1 A once ambient hits 60 °C. Breaking capacity is 52.5 kA at 240 V AC and 7.5 kA at 415 V AC — that 52.5 kA figure is the one that matters for high-fault service entrances or large transformer secondaries; the 415 V number is lower but still covers most industrial distribution panels. At 25.4 mm wide (1 inch), 130 mm tall, and 70 mm deep, this breaker fits a standard 1-pole MCCB slot in a SENTRON distribution panel or a separate enclosure. No communication function, no motor drive option, and no neutral conductor upgrade path, so it's a basic thermal-magnetic breaker with no add-on accessories for remote trip or status monitoring.","metaTitle":"Siemens 3VA1120-3ED12-0AA0 SENTRON MCCB, 1-Pole 20A, 52.5kA","metaDescription":"Siemens SENTRON 3VA1120-3ED12-0AA0 molded case circuit breaker, 1-pole, 20A rated at 40°C, 52.5kA at 240V. TM210 release. Active production. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"Depth":"70 mm","Width":"25.4 mm","Height":"130 mm","at 240 V":"52.5 kA","at 415 V":"7.5 kA","at 40 °C":"20 A","at 45 °C":"20 A","at 50 °C":"20 A","at 55 °C":"20 A","at 60 °C":"19 A","at 65 °C":"19 A","at 70 °C":"19 A","Depth [In]":"2.76 in","Width [In]":"1 in","Height [In]":"5.12 in","Number Of Poles":"1","Product version":"Line protection","lifecycle_stage":"current","Product Brand Name":"SENTRON","Product Designation":"Molded case circuit breaker","Communication Function":"No","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","power loss [W] / maximum":"4 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","rated insulation voltage Ui":"500 V","Courant permanent assigné Iu":"20 A","Ground-Fault Monitoring Version":"Without","Design Of The Overcurrent Release":"TM210","Design Of Short-Circuit Protection":"For switching power values in DC networks, see the 3VA molded case circuit breaker device manual; link to be found under Service & Support in the last chapter","protection class IP / on the front":"IP40","reference code / acc. to IEC 81346-2":"Q","Max. rated operational voltage Ue with DC":"125 V","Product Extension / Optional / Motor Drive":"No","Adjustable response value current / li max.":"320 A","Adjustable response value current / li min.":"320 A","Neutral conductors / upgradeable/retrofittable":"No","Protection Function Of The Overcurrent Release":"LI","number of CO contacts / for auxiliary contacts":"0","Switching Capacity Class Of The Circuit Breaker":"N","Max. rated operational current of the frame size":"160 A","Mechanical Service Life (Switching Cycles) / Typical":"20 000","Type Of Electrical Connection / For Main Current Circuit":"nut keeper kit on both ends","Arrangement Of Electrical Connectors / For Main Current Circuit":"Front terminal","Type of connectable conductor cross-section, connection screw, width x thickness , max.":"17 x 6.5 mm","Type of connectable conductor cross-section, connection screw, width x thickness , min.":"12 x 1 mm"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=217132&mlfb=3VA1120-3ED12-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1120-3ED12-0AA0/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of this MCCB?","answer":"52.5 kA at 240 V AC and 7.5 kA at 415 V AC — the 240 V figure covers high-fault applications like service entrances."},{"question":"What does the TM210 release mean?","answer":"TM210 is a thermal-magnetic release with a fixed instantaneous trip at 320 A (Li protection) and a 20 A continuous rating that holds to 55 °C."},{"question":"Where can I buy 3VA1120-3ED12-0AA0?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution; availability and current pricing are confirmed at quote time."},{"question":"Will this fit a panel designed for 3VA1020-3ED36-0AA0?","answer":"Both are 1-pole SENTRON MCCBs with the same 25.4 mm width and similar mounting footprint, so it will drop into the same panel slot without rewiring — but verify the rating differences: the 3VA1020 variant carries different trip characteristics."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1120-3ED12-0AA0","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/3VA1120-3ED12-0AA0 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}}