{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1020-4ED46-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1020-4ED46-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1020-4ED46-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1020-4ED46-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1020-4ED46-0AA0, molded case circuit breaker, 4-pole, 20 A rated, TM210 thermal-magnetic trip, 121 kA breaking capacity at 240 VAC.","salesMarkdown":"## Siemens SENTRON 3VA1020-4ED46-0AA0 — 20 A MCCB, 4-Pole, High Interrupting Capacity Its TM210 thermal-magnetic trip unit provides fixed thermal and magnetic protection, adjustable to a maximum instantaneous trip setting of 320 A (li max.), covering overload and short-circuit faults without the complexity of electronic trip adjustments. Breaking capacity reaches 121 kA at 240 VAC, 75.6 kA at 415 VAC, 52.5 kA at 440 VAC, and holds 11.9 kA at both 500 V and 690 VAC — suitable for high-fault utility feeds and transformer secondaries where available fault current exceeds standard 25–50 kA MCCB ratings. The breaker carries its full 20 A rating from 45 °C through 55 °C ambient, then derates to 19 A at 60–70 °C — a shallow derating curve that keeps the part usable in warm enclosures without oversizing the frame. Dimensions are 70 mm deep, 101.6 mm wide, and 130 mm high — the 4-inch (101.6 mm) width matches the standard 4-pole MCCB footprint for DIN-rail or screw-mount panel integration, with IP40 protection on the front face (finger-safe behind the panel door). Maximum power dissipation is 12 W at rated load, a figure to include in enclosure thermal calculations when grouping multiple breakers in a sealed panel.","metaTitle":"Siemens 3VA1020-4ED46-0AA0 SENTRON MCCB, 20 A, 4-Pole, 121 k","metaDescription":"Siemens SENTRON 3VA1020-4ED46-0AA0 molded case circuit breaker, 20 A rated, 4-pole, 121 kA breaking at 240 V. Active production. Quoted to order.","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","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 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","Number Of Poles":"4","Product version":"Line 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":"12 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","Tension assignée d'isolement Ui":"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","reference code / acc. to IEC 81346-2":"Q","Max. rated operational voltage Ue with DC":"600 V","Product Extension / Optional / Motor Drive":"No","Adjustable response value current / li max.":"320 A","Adjustable response value current / li min.":"320 A","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 (Operating Cycles) / Typical":"20 000","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=474102&mlfb=3VA1020-4ED46-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1020-4ED46-0AA0/alternatives.json"},"ai":{"faq":[{"question":"What is the closest functional second-source to 3VA1020-4ED46-0AA0?","answer":"The 3VA1020-3ED36-0AA0 is a close sibling in the same SENTRON 3VA1020 frame. The key difference is the trip unit: the -4ED46 carries a TM210 thermal-magnetic trip, while the -3ED36 uses a different trip variant. Both are 20 A, 4-pole breakers sharing the same 70 mm depth, 101.6 mm width, and 130 mm height, so they drop into the same panel footprint without rewiring. Verify the trip curve and interrupting rating match your application before substituting."},{"question":"What is 3VA1020-4ED46-0AA0's listed depth?","answer":"The depth is 70 mm (2.76 in), matching the standard 3VA1020 frame dimension across all trip variants."},{"question":"What is 3VA1020-4ED46-0AA0's listed width?","answer":"The width is 101.6 mm (4 in), the standard 4-pole MCCB footprint for this SENTRON series."},{"question":"Will 3VA1020-4ED46-0AA0 drop into a panel specified around 3VA1020-3ED36-0AA0 without rewiring?","answer":"Yes — both breakers share the same 70 mm depth, 101.6 mm width, and 130 mm height, and both are 4-pole 20 A MCCBs in the 3VA1020 frame. The physical footprint and terminal layout are identical, so no panel modification or rewiring is needed. The only difference is the trip unit design (TM210 vs. the -3ED36 variant), so confirm the protective settings match your coordination study."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1020-4ED46-0AA0","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/3VA1020-4ED46-0AA0 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}}