{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1020-4ED36-0KA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1020-4ED36-0KA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1020-4ED36-0KA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1020-4ED36-0KA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1020-4ED36-0KA0, molded case circuit breaker, 3-pole, 20 A rated current, TM210 thermal-magnetic release, line protection version, breaking capacity 121 kA at 240 V.","salesMarkdown":"The 121 kA breaking capacity at 240 V tells you it can safely interrupt a massive fault without welding contacts or cascading upstream; at 415 V it still handles 75.6 kA, and at 690 V it holds 11.9 kA. ## Fit and mounting The 3VA1020-4ED36-0KA0 measures 130 mm high, 76.2 mm wide, and 70 mm deep. ## Thermal derating and power loss At 60 °C it derates to 19 A, and holds that through 70 °C. That's a clean thermal curve — no surprise drop at moderate cabinet temperatures. Maximum power loss is 12 W, which is modest for a 20 A MCCB; it won't drive a lot of heat into a densely packed panel.","metaTitle":"Siemens 3VA1020-4ED36-0KA0 SENTRON MCCB, 20 A, 3-Pole, 121 k","metaDescription":"Siemens SENTRON 3VA1020-4ED36-0KA0 molded case circuit breaker, 20 A rated, 3-pole, TM210 release. Breaking capacity 121 kA at 240 V. Active production, sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"Depth":"70 mm","Width":"76.2 mm","Height":"130 mm","at 240 V":"121 kA","at 415 V":"75.6 kA","at 440 V":"52.5 kA","at 500 V":"11.9 kA","at 690 V":"11.9 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":"19 A","Depth [In]":"2.76 in","Width [In]":"3 in","Height [In]":"5.12 in","Trip Indicator":"No","Number Of Poles":"3","Product version":"Line protection","Voltage Trigger":"Yes","lifecycle_stage":"current","Product Brand Name":"SENTRON","Product Designation":"Molded case circuit breaker","Undervoltage Release":"No","Communication Function":"No","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","power loss [W] / maximum":"12 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","rated insulation voltage Ui":"800 V","Of The Supplied Basic Switch":"3VA10204ED360AA0","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","Of The Integrated Auxiliary Trip Unit":"3VA9688-0BL33","operating voltage / at AC / rated value":"690 V","Max. rated operational voltage Ue with DC":"500 V","reference code / according to IEC 81346-2":"Q","Product Extension / Optional / Motor Drive":"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":"100 A","Mechanical Service Life (Switching Cycles) / Typical":"20 000","Type Of Electrical Connection / For Main Current Circuit":"box terminal on both sides","Arrangement Of Electrical Connectors / For Main Current Circuit":"Front terminal","Type of connectable conductor cross-section, round conductor terminal, stranded":"1 x (1,5 - 70 mm²)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=158650&mlfb=3VA1020-4ED36-0KA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1020-4ED36-0KA0/alternatives.json"},"ai":{"faq":[{"question":"What are the key ratings for this MCCB?","answer":"Rated continuous current is 20 A (Iu), with a TM210 thermal-magnetic release. Breaking capacity reaches 121 kA at 240 V, 75.6 kA at 415 V, 52.5 kA at 440 V, and 11.9 kA at both 500 V and 690 V. Rated insulation voltage is 800 V."},{"question":"Where can I buy the 3VA1020-4ED36-0KA0?","answer":"Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — no stock count or price is listed here, but a quote request will return both."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1020-4ED36-0KA0","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/3VA1020-4ED36-0KA0 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}}