{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA4120-6ED14-1AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA4120-6ED14-1AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA4120-6ED14-1AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA4120-6ED14-1AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA4120-6ED14-1AA0, 1-pole molded-case circuit breaker, system protection, TM210 release, 20 A at 40 °C, 150 kA at 120 V.","salesMarkdown":"That LI protection curve (long-time + instantaneous) covers branch circuits where you need overload protection with a fast magnetic trip on hard faults. Rated 20 A continuous from 40 °C through 55 °C, then derates to 19 A at 60 °C and 18 A at 70 °C. That flat thermal band means you don't lose headroom until the panel ambient climbs above 55 °C — useful in a crowded enclosure with limited airflow. The interrupting ratings are the headline: 150 kA at 120 V, 65 kA at 277 V, and 25 kA at 347 V. At 25.4 mm wide (1 inch), it packs into a single-pole module on the DIN rail. Depth is 75.1 mm, height 129.4 mm — standard SENTRON 3VA footprint, so it swaps into existing panels without re-drilling gland plates. The 25.4 mm width means it occupies exactly one 1-inch module — no overhang, no filler pieces needed. Terminal layout is standard for the 3VA family: line on top, load on bottom, with the TM210 release dial accessible from the front for the magnetic pickup adjustment.","metaTitle":"Siemens SENTRON 3VA4120-6ED14-1AA0 1-pole MCCB, 20 A, TM210,","metaDescription":"Siemens SENTRON 3VA4120-6ED14-1AA0 1-pole MCCB, 20 A rated at 40 °C, TM210 release, 150 kA at 120 V. Current lifecycle. Available to order.","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":"25.4 mm","title":"3VA4120-6ED14-1AA0","Height":"129.4 mm","at 120 V":"150 kA","at 277 V":"65 kA","at 347 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]":"1 in","Height [In]":"5.1 in","description":"circuit breaker 3VA4 UL frame 125 breaking capacity class H 65kA @ 277 V 1-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","Number Of Poles":"1","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":"2.8 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","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","Product Extension / Optional / Motor Drive":"No","Adjustable response value current / lg min.":"20 A","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":"H","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=1058154&mlfb=3VA4120-6ED14-1AA0"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA4120-6ED14-1AA0","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/3VA4120-6ED14-1AA0 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}}