{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1020-4ED32-0JA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1020-4ED32-0JA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1020-4ED32-0JA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1020-4ED32-0JA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1020-4ED32-0JA0, molded case circuit breaker (MCCB), 3-pole, 20 A rated at 40 °C, interrupting rating 121 kA at 240 V, line protection with TM210 thermal-magnetic release and shunt trip STL.","salesMarkdown":"The TM210 thermal-magnetic release handles overload and short-circuit curves; the integrated shunt trip (STL) lets a remote signal or safety relay drop the breaker on demand. This breaker's short-circuit rating is voltage-dependent — a key detail when the panel feeds multiple bus voltages. At 240 V it clears 121 kA; at 415 V that drops to 75.6 kA; at 440 V it's 52.5 kA; at 500 V and 690 V it holds at 11.9 kA. That 11.9 kA floor at 690 V still covers most motor-drive branch circuits. Rated current is 20 A from 40 °C up through 55 °C, then derates to 19 A at 60 °C and 65 °C, and stays at 19 A at 70 °C. That's a shallow derating curve — useful in a crowded enclosure where ambient runs warm. Maximum power loss is 12 W, which matters for heat buildup in a sealed panel. The 3VA1020-4ED32-0JA0 measures 130 mm tall, 76.2 mm wide, and 70 mm deep. Three-pole construction; the shunt trip (STL) requires a separate control voltage — no undervoltage release here, so verify the trip coil wiring if replacing a UVR-specified breaker.","metaTitle":"Siemens 3VA1020-4ED32-0JA0 SENTRON MCCB, 20 A, 3-Pole, 121 k","metaDescription":"Siemens 3VA1020-4ED32-0JA0 SENTRON molded case circuit breaker, 20 A rated, 3-pole, 121 kA interrupting at 240 V. Line protection with shunt trip. Current lifecycle. Sourced to ord","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","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]":"3 in","Height [In]":"5.12 in","Trip Indicator":"No","Number Of Poles":"3","Voltage Trigger":"Yes","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","Of The Supplied Basic Switch":"3VA10204ED320AA0","Design Of The Auxiliary Release":"shunt trip (STL)","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","Of The Integrated Auxiliary Trip Unit":"3VA9688-0BL32","Product Function / Grounding Protection":"No","operating voltage / at AC / rated value":"690 V","operating voltage / at DC / rated value":"500 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":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=85543&mlfb=3VA1020-4ED32-0JA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1020-4ED32-0JA0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1020-4ED32-0JA0 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."},{"question":"What is the interrupting rating of 3VA1020-4ED32-0JA0 at 240 V?","answer":"It clears 121 kA at 240 V AC."},{"question":"Does 3VA1020-4ED32-0JA0 include a shunt trip?","answer":"Yes, it has a shunt trip (STL) auxiliary release for remote tripping."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1020-4ED32-0JA0","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/3VA1020-4ED32-0JA0 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}}