{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA4120-5ED24-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA4120-5ED24-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA4120-5ED24-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA4120-5ED24-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA4120-5ED24-0AA0, 2-pole molded-case circuit breaker, 20 A rated at 40 °C, 85 kA interrupting at 240 V AC, TM210 thermal-magnetic release, system protection design.","salesMarkdown":"The Siemens SENTRON 3VA4120-5ED24-0AA0 is a 2-pole molded-case circuit breaker rated 20 A at 40 °C ambient, with a TM210 thermal-magnetic overcurrent release. At 600 Y/347 V it still holds 18 kA, so it handles common North American wye configurations without derating the SCCR. That simplifies specification: what you see on the nameplate is the continuous current, and the magnetic pickup is factory-set. For a system-protection role (per the product design), this is intentional — fewer variables in a coordination study. At 50 °C it derates to 19 A, at 60 °C to 18 A, and at 70 °C to 17 A. Dimensions: 50.8 mm wide (2 in), 129.4 mm high (5.09 in), 75.1 mm deep (2.96 in). The 2-pole width matches a standard 2-module DIN-rail footprint.","metaTitle":"Siemens 3VA4120-5ED24-0AA0 SENTRON MCCB, 2-pole, 20 A, 85 kA","metaDescription":"Siemens SENTRON 3VA4120-5ED24-0AA0 molded-case circuit breaker, 2-pole, 20 A rated, 85 kA at 240 V. TM210 release. Current lifecycle. 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":"50.8 mm","Height":"129.4 mm","Maximum":"1 s","Minimum":"1 s","at 240 V":"85 kA","at 480 V":"35 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]":"2 in","Height [In]":"5.09 in","Trip Indicator":"No","at 480 Y/277 V":"35 kA","at 600 Y/347 V":"18 kA","Number Of Poles":"2","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":"5.6 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"}},"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=1058148&mlfb=3VA4120-5ED24-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA4120-5ED24-0AA0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy the 3VA4120-5ED24-0AA0 and what is the lead time?","answer":"This part is sourced to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time; submit an RFQ for a firm lead-time commitment."},{"question":"What is the interrupting rating of this MCCB at 240 V?","answer":"85 kA at 240 V AC. At 480 V AC it is rated 35 kA, and at 600 Y/347 V it holds 18 kA."},{"question":"What overcurrent release does the 3VA4120-5ED24-0AA0 use?","answer":"A TM210 thermal-magnetic release. It is fixed — no interchangeable trip units or electronic adjustment. The continuous current is 20 A at 40 °C, with the magnetic pickup factory-set."},{"question":"What are the physical dimensions of this breaker?","answer":"Width 50.8 mm (2 in), height 129.4 mm (5.09 in), depth 75.1 mm (2.96 in). It occupies a 2-module DIN-rail space."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA4120-5ED24-0AA0","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/3VA4120-5ED24-0AA0 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}}