{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA4120-5ED14-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA4120-5ED14-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA4120-5ED14-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA4120-5ED14-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA4120-5ED14-0AA0, 1-pole molded-case circuit breaker, TM210 thermal-magnetic release, rated 20 A at 40 °C, breaking capacity 85 kA at 120 V AC.","salesMarkdown":"The Siemens SENTRON 3VA4120-5ED14-0AA0 is a 1-pole molded-case circuit breaker (MCCB) with a TM210 thermal-magnetic release, rated 20 A at 40 °C. It's built for system protection in distribution panels — the single-pole form factor (25.4 mm wide) saves rail space on branch circuits where you only need to break the line conductor. The 85 kA interrupting rating at 120 V AC means it can handle high-fault scenarios common in industrial lighting or control transformer feeds without cascading failure upstream. At 277 V it still clears 35 kA, and at 347 V it holds 18 kA — that covers most North American 347/600 V lighting and small power circuits. The IP40 front protection keeps dust and tools out of the breaker face in a closed panel. The 3VA4120-5ED14-0AA0 snaps onto a standard DIN rail — 25.4 mm wide, 129.4 mm tall, 75.1 mm deep. That single-pole width means it occupies one 1-inch module position.","metaTitle":"Siemens 3VA4120-5ED14-0AA0 SENTRON MCCB, 1-Pole, 20 A, 85 kA","metaDescription":"Siemens SENTRON 3VA4120-5ED14-0AA0 molded-case circuit breaker, 1-pole, 20 A rated at 40 °C, TM210 release, 85 kA at 120 V. Current lifecycle stage, 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","Height":"129.4 mm","Maximum":"1 s","Minimum":"1 s","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":"19 A","at 55 °C":"19 A","at 60 °C":"18 A","at 65 °C":"18 A","at 70 °C":"17 A","Depth [In]":"2.96 in","Width [In]":"1 in","Height [In]":"5.09 in","Trip Indicator":"No","Number Of Poles":"1","Voltage Trigger":"No","lifecycle_stage":"current","Product Brand Name":"SENTRON","Product Designation":"Molded-case circuit breaker","Undervoltage Release":"No","Design Of The Product":"System protection","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","Product Function / Grounding Protection":"No","operating voltage / at AC / rated value":"415 V","Product Extension / Optional / Motor Drive":"No","product designation / according to UL file":"MEAB","Protection Function Of The Overcurrent Release":"LI","number of CO contacts / for auxiliary contacts":"0","Switching Capacity Class Of The Circuit Breaker":"M","electrical endurance (operating cycles) / at 480 V":"8 000","electrical endurance (operating cycles) / at 600 V":"4 000","marking / according to UL 489 / 100%-rated breaker":"No","Mechanical Service Life (Operating Cycles) / Typical":"15 000","Type Of Electrical Connection / For Main Current Circuit":"Infeed side: Low tab","Arrangement Of Electrical Connectors / For Main Current Circuit":"output side: circular conductor connection"}},"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=1058146&mlfb=3VA4120-5ED14-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA4120-5ED14-0AA0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy the 3VA4120-5ED14-0AA0 and get a price?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time."},{"question":"What is the depth of the 3VA4120-5ED14-0AA0?","answer":"The depth is 75.1 mm (2.96 inches)."},{"question":"What is the width of the 3VA4120-5ED14-0AA0?","answer":"The width is 25.4 mm (1 inch), which is a standard single-pole module width for DIN-rail mounting."},{"question":"What compliance documentation does Siemens provide for this MCCB?","answer":"As a current-production Siemens SENTRON product, the 3VA4120-5ED14-0AA0 carries standard manufacturer documentation including RoHS and REACH compliance declarations, and is designed to meet IEC 60947-2 and UL 489 standards for molded-case circuit breakers. Specific certs and declarations are available from Siemens upon request."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA4120-5ED14-0AA0","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/3VA4120-5ED14-0AA0 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}}