{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1020-4ED42-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1020-4ED42-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1020-4ED42-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1020-4ED42-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1020-4ED42-0AA0, molded case circuit breaker, 4-pole, 20 A rated at 40 °C, TM210 release, 121 kA breaking capacity at 240 V AC.","salesMarkdown":"It carries a 20 A rating at 40 °C, with a TM210 thermal-magnetic overcurrent release that handles both overload and short-circuit conditions without undervoltage or ground-fault monitoring. The breaker's 121 kA interrupting capacity at 240 V AC means it can safely clear high-fault currents in a 240 V system without cascading upstream — critical for selectivity in a main or feeder position. At 415 V the breaking capacity drops to 75.6 kA, still enough for most industrial service-entrance applications. Rated current holds at 20 A from 40 °C up to 55 °C, then derates to 19 A at 60 °C through 70 °C — no surprise for a panel-mounted breaker, but worth noting if the enclosure runs hot. The insulation voltage is rated 800 V, so the breaker is suitable for 690 V systems as well, where it still interrupts 11.9 kA. Dimensions are 101.6 mm wide, 130 mm high, 70 mm deep — a standard 4-pole MCCB footprint that fits SENTRON panelboards and most DIN-rail adapters.","metaTitle":"Siemens SENTRON 3VA1020-4ED42-0AA0 MCCB, 20 A, 4-Pole, 121 k","metaDescription":"Siemens SENTRON 3VA1020-4ED42-0AA0 molded case circuit breaker, 20 A, 4-pole, 121 kA breaking capacity at 240 V. Active production. Available to order. Request a quote.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"Depth":"70 mm","Width":"101.6 mm","Height":"130 mm","Maximum":"0 A","Minimum":"0 A","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]":"4 in","Height [In]":"5.12 in","Trip Indicator":"No","Number Of Poles":"4","Voltage Trigger":"No","lifecycle_stage":"current","Product Brand Name":"SENTRON","Product Designation":"Molded case circuit breaker","Undervoltage Release":"No","Design Of The Product":"Line protection","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","Ground-Fault Monitoring Version":"Without","Insulation Voltage / Rated Value":"800 V","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","design of the N-conductor protection":"without","Product Function / Grounding Protection":"No","operating voltage / at AC / rated value":"690 V","operating voltage / at DC / rated value":"600 V","reference code / according to IEC 81346-2":"Q","Product Extension / Optional / Motor Drive":"No","Protection Function Of The Overcurrent Release":"LI","number of CO contacts / for auxiliary contacts":"0","Switching Capacity Class Of The Circuit Breaker":"S","Mechanical Service Life (Operating Cycles) / Typical":"20 000","Type Of Electrical Connection / For Main Current Circuit":"nut keeper kit on both ends","Arrangement Of Electrical Connectors / For Main Current Circuit":"Front terminal"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/bf7c08ab4c81864861ec3e517799846b.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=143407&mlfb=3VA1020-4ED42-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1020-4ED42-0AA0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1020-4ED42-0AA0 and how do I get a price?","answer":"This part is sourced and quoted to order through independent distribution. Submit an RFQ for current availability and pricing — confirmed at quote time."},{"question":"Will 3VA1020-4ED42-0AA0 drop into a panel that was specified around 3VA1110-5ED32-0AA0 without rewiring?","answer":"The 3VA1020-4ED42-0AA0 is a 4-pole, 20 A MCCB with a TM210 release; the 3VA1110-5ED32-0AA0 is a different rating and release. Physical dimensions (101.6 mm width, 130 mm height, 70 mm depth) are standard for the SENTRON 4-pole frame, so it may share the same mounting footprint, but the electrical ratings differ — verify the BOM's required current and breaking capacity before swapping."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1020-4ED42-0AA0","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/3VA1020-4ED42-0AA0 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}}