{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA4120-4ED34-1AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA4120-4ED34-1AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA4120-4ED34-1AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA4120-4ED34-1AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON, molded-case circuit breaker, 3VA4120-4ED34-1AA0, 3-pole, 20 A rated current, 65 kA at 240 V, 25 kA at 480 V, TM210 release.","salesMarkdown":"## Siemens SENTRON 3VA4120-4ED34-1AA0 — 20 A MCCB, 3-Pole, 65 kA at 240 V The Siemens SENTRON 3VA4120-4ED34-1AA0 is a 3-pole molded-case circuit breaker (MCCB) rated for a continuous current of 20 A at 40 °C, with a thermal-magnetic TM210 release that is fixed at 300 A instantaneous trip (li min. and max. both 300 A). At 240 V it clears 65 kA — that is the high-fault rating that makes this breaker suitable for main or large-feeder positions in a 240 VAC panelboard. At 480 V the rating drops to 25 kA, and at 600 Y/347 V it is 14 kA, so the application voltage directly governs where this MCCB can be placed without exceeding its interrupting capacity. Rated 20 A from 40 °C through 55 °C; at 60 °C and 65 °C it holds 19 A, and at 70 °C it derates to 18 A. The TM210 release is thermal-magnetic — no electronic adjustment — so the fixed li setting at 300 A means the magnetic trip is not field-adjustable. Dimensions are 76.2 mm wide (3 in), 129.4 mm tall, 75.1 mm deep, fitting a standard 3-pole MCCB footprint on DIN rail or panel-mount.","metaTitle":"Siemens SENTRON 3VA4120-4ED34-1AA0 MCCB, 20 A, 3-Pole, 65 kA","metaDescription":"Siemens SENTRON 3VA4120-4ED34-1AA0 molded-case circuit breaker, 20 A rated, 3-pole, 65 kA at 240 V, 25 kA at 480 V. TM210 release, IP40 front. Current lifecycle; quoted to order ag","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"Depth":"75.1 mm","Width":"76.2 mm","title":"3VA4120-4ED34-1AA0","Height":"129.4 mm","at 240 V":"65 kA","at 480 V":"25 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":"18 A","Depth [In]":"3 in","Width [In]":"3 in","Height [In]":"5.1 in","description":"circuit breaker 3VA4 UL frame 125 breaking capacity class S 25kA @ 480 V 3-pole, line protection TM210, FTFM, In=20A overload protection Ir=20A fixed short-circuit protection Ii=15 x In UL489 SB (naval), 50 deg. cel. clamp connection","at 480 Y/277 V":"25 kA","at 600 Y/347 V":"14 kA","Number Of Poles":"3","Product version":"System 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":"8.5 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","Courant permanent assigné Iu":"20 A","Ground-Fault Monitoring Version":"Without","Design Of The Overcurrent Release":"TM210","protection class IP / on the front":"IP40","reference code / acc. to IEC 81346-2":"Q","Product Extension / Optional / Motor Drive":"No","product designation / according to UL file":"SEAM","Adjustable response value current / li max.":"300 A","Adjustable response value current / li min.":"300 A","marking / acc. to UL 489 / 100%-rated breaker":"No","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":"S","Max. rated operational current of the frame size":"125 A","electrical endurance (switching cycles) / at 480 V":"8 000","electrical endurance (switching cycles) / at 600 V":"4 000","Mechanical Service Life (Switching Cycles) / Typical":"15 000","Type Of Electrical Connection / For Main Current Circuit":"Infeed side: Low tab","Arrangement Of Electrical Connectors / For Main Current Circuit":"Load side: Circular conductor terminal","Type of connectable conductor cross-section, round conductor terminal, stranded":"1 x (14 AWG - 8 AWG)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/d69e6b3b8396dc515f9b0ae09010e21c.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1058144&mlfb=3VA4120-4ED34-1AA0"},"ai":{"faq":[{"question":"What is 3VA4120-4ED34-1AA0's interrupting rating at 480 V?","answer":"25 kA at 480 V, and 14 kA at 600 Y/347 V."},{"question":"Where can I buy 3VA4120-4ED34-1AA0 and how is it quoted?","answer":"Sourced and quoted to order against an RFQ through independent distribution; availability and current pricing confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA4120-4ED34-1AA0","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/3VA4120-4ED34-1AA0 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}}