{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA4120-5ED14-1AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA4120-5ED14-1AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA4120-5ED14-1AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA4120-5ED14-1AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA4120-5ED14-1AA0, 1-pole molded-case circuit breaker, system protection version, 20 A rated current, 85 kA breaking capacity at 120 V, TM210 release.","salesMarkdown":"The Siemens SENTRON 3VA4120-5ED14-1AA0 is a 1-pole molded-case circuit breaker (MCCB) from the 3VA system-protection family, rated for a continuous current Iu of 20 A across an ambient range of 40 °C to 55 °C before it begins to derate — at 70 °C it still carries 18 A. The headline figure buyers care about is the interrupting capacity: 85 kA at 120 V, 35 kA at 277 V, and 18 kA at 347 V. The TM210 overcurrent release is a fixed thermal-magnetic trip with a magnetic short-circuit pickup adjustable from 300 A minimum to 300 A maximum — that's a fixed instantaneous trip at 15x In. The 25.4 mm width (1 inch) per pole means a 1-pole unit takes a single 25.4 mm module — standard for SENTRON 3VA panels. Depth is 75.1 mm, height 129.4 mm. If you need remote trip indication or shunt-trip capability, you'd add the appropriate SENTRON accessory modules separately. The power loss is 2.8 W maximum at rated current, so thermal buildup in a dense panel is manageable but worth checking if you're packing multiple units side by side. UL file MEAM per the evidence — the breaker carries UL 489 listing, so it's accepted for US and Canadian panelboard and switchboard installations. The IEC 81346-2 reference code Q (switching device) applies. No RoHS/REACH statement is in the evidence, but as a current Siemens SENTRON product it would meet standard EU compliance — confirm with your Siemens rep if documentation is needed for your quality system.","metaTitle":"Siemens SENTRON 3VA4120-5ED14-1AA0 1-Pole MCCB, 20 A, 85 kA","metaDescription":"Siemens SENTRON 3VA4120-5ED14-1AA0 molded-case circuit breaker, 1-pole, 20 A rated, 85 kA at 120 V. TM210 release. 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":"75.1 mm","Width":"25.4 mm","Height":"129.4 mm","at 120 V":"85 kA","at 277 V":"35 kA","at 347 V":"18 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","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","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","Product Extension / Optional / Motor Drive":"No","product designation / according to UL file":"MEAM","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":"M","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,"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=1058147&mlfb=3VA4120-5ED14-1AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA4120-5ED14-1AA0/alternatives.json"},"ai":{"faq":[{"question":"What is the overcurrent release type on this MCCB?","answer":"TM210 — a fixed thermal-magnetic release with magnetic trip adjustable from 300 A minimum to 300 A maximum (fixed at 15x In)."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA4120-5ED14-1AA0","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/3VA4120-5ED14-1AA0 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}}