{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1020-4ED32-0AF0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1020-4ED32-0AF0","canonicalUrl":"https://aoctrl.com/siemens/3VA1020-4ED32-0AF0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1020-4ED32-0AF0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1020-4ED32-0AF0, molded case circuit breaker, 3-pole, 20 A rated continuous current, 121 kA breaking capacity at 240 V, TM210 thermal-magnetic release, 70 mm depth, IP40 front.","salesMarkdown":"## What this 20 A MCCB delivers The Siemens SENTRON 3VA1020-4ED32-0AF0 is a 3-pole molded case circuit breaker rated for 20 A continuous current at 40 °C through 50 °C, with a TM210 thermal-magnetic release for line protection. Its interrupting capacity hits 121 kA at 240 V, 75.6 kA at 415 V, and 52.5 kA at 440 V — numbers that matter when coordinating downstream with a transformer or a motor branch that can dump serious fault current. The 15 000-cycle latching endurance aligns with the SENTRON line's mechanical life for a 20 A frame. The 3VA1020-4ED32-0AF0 fits a standard 3-pole MCCB footprint: 76.2 mm wide, 130 mm tall, 70 mm deep. It mounts to a DIN rail or panel-mount baseplate.","metaTitle":"Siemens 3VA1020-4ED32-0AF0 SENTRON MCCB, 20 A, 3-Pole, 121 k","metaDescription":"Siemens SENTRON 3VA1020-4ED32-0AF0 molded case circuit breaker, 20 A rated, 3-pole, 121 kA breaking at 240 V. Current production. Sourced to order against RFQ.","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 690 V":"11.9 kA","at 40 °C":"20 A","at 45 °C":"20 A","at 50 °C":"20 A","at 55 °C":"19.2 A","at 60 °C":"18.8 A","at 65 °C":"18.4 A","at 70 °C":"18 A","Trip indicator":"Yes","Number of poles":"3","Product version":"Line protection","Voltage trigger":"No","lifecycle_stage":"current","Product brand name":"SENTRON","Product designation":"Molded case circuit breaker","Latching - endurance":"15 000","Undervoltage Release":"No","Communication Function":"No","Phase failure detection":"No","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","Auxiliary contact version":"1 auxiliary switch + 1 trip alarm switch HQ","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","Rated continuous current Iu":"20 A","Rated insulation voltage Ui":"800 V","Design of the auxiliary release":"without auxiliaryrelease","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","Reference code / acc. to DIN EN 81346-2":"Q","Adjustable response value time / tr max.":"1","Adjustable response value time / tr min.":"1","Max. rated operational voltage Ue with DC":"500 V","Undervoltage Release With Leading Contact":"No","Product extension / optional / motor drive":"No","Adjustable response value current / Ir max.":"20 A","Adjustable response value current / li max.":"320 A","Adjustable response value current / li min.":"320 A","Adjustable response value current / lr min.":"20 A","Neutral conductors / upgradeable/retrofittable":"No","Number of CO contacts / for auxiliary contacts":"2","Protective function of the overcurrent release":"LI","Of The Integrated Auxiliary Switch/Alarm Switch":"3VA9988-0AB12","Switching capacity class of the circuit breaker":"S","Max. rated operational current of the frame size":"100 A","Max. rated operational voltage Ue with AC 50/60Hz":"690 V","Type of electrical connection / for main current circuit":"lug terminal","Arrangement of electrical connectors / for main current circuit":"Front terminal","Type of connectable conductor cross-section, connection screw, width x thickness , max.":"17 x 6.5","Type of connectable conductor cross-section, connection screw, width x thickness , min.":"12 x 0"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/ec65bbb84a7a98c6f853be368c1f8e70.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=338200&mlfb=3VA1020-4ED32-0AF0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1020-4ED32-0AF0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1020-4ED32-0AF0 and get a price?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Submit a request for current availability and pricing."},{"question":"Will 3VA1020-4ED32-0AF0 drop into a panel specified for 3VA1010-2ED32-0JA0?","answer":"Both are 3-pole SENTRON MCCBs on the same 3VA frame, so the mounting footprint and bus-bar spacing are identical. The 3VA1020-4ED32-0AF0 carries a 20 A rating versus the 3VA1010's lower rating, so the panel's conductor sizing and upstream protection must be verified for the higher continuous current. No rewiring of the bus is needed if the panel is already rated for 20 A."},{"question":"What is the depth of 3VA1020-4ED32-0AF0?","answer":"The depth is 70 mm, with a width of 76.2 mm and a height of 130 mm."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1020-4ED32-0AF0","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/3VA1020-4ED32-0AF0 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}}