{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1020-4ED32-0AD0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1020-4ED32-0AD0","canonicalUrl":"https://aoctrl.com/siemens/3VA1020-4ED32-0AD0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1020-4ED32-0AD0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1020-4ED32-0AD0, molded case circuit breaker, 3-pole, 20 A rated continuous current Iu, TM210 thermal-magnetic release, 121 kA at 240 V, IP40 front protection.","salesMarkdown":"## Line protection MCCB with TM210 release — 20 A frame, 121 kA interrupting capacity The interrupting capacity hits 121 kA at 240 V and 75.6 kA at 415 V — numbers that govern selectivity coordination in high-fault panels. The TM210 thermal-magnetic release is fixed (non-adjustable), so the trip curve is set at the factory; no field tweaking on the thermal or magnetic pickup. ## Derating profile and thermal limits Above that, it derates linearly: 19.2 A at 55 °C, 18.8 A at 60 °C, 18.4 A at 65 °C, and 18 A at 70 °C. ## Physical fit and auxiliary configuration Footprint is 76.2 mm wide by 130 mm tall by 70 mm deep — standard 3-pole MCCB envelope for DIN-rail or panel-mount backplate integration. The auxiliary contact version is 3 auxiliary switches HQ.","metaTitle":"Siemens 3VA1020-4ED32-0AD0 SENTRON MCCB, 20 A, 3-Pole, 121 k","metaDescription":"Siemens SENTRON 3VA1020-4ED32-0AD0 molded case circuit breaker, 20 A rated, 3-pole, 121 kA at 240 V. TM210 release, IP40 front. Active production. Quoted 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 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":"No","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":"3 auxiliary switches 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":"3","Protective function of the overcurrent release":"LI","Of The Integrated Auxiliary Switch/Alarm Switch":"3VA9988-0AA12","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":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=303217&mlfb=3VA1020-4ED32-0AD0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1020-4ED32-0AD0/alternatives.json"},"ai":{"faq":[{"question":"Will 3VA1020-4ED32-0AD0 drop into a panel specified around 3VA1010-2ED32-0JA0 without rewiring?","answer":"Physically yes — same 3-pole SENTRON 3VA footprint (76.2 mm wide, 70 mm deep). Electrically no: the 20 A frame requires the feeder and load conductors sized for 20 A, and the interrupting capacity at the fault point must be rechecked against the 3VA1020's curve. If the original panel was wired and braced for a 10 A MCCB, the bus and lug stack may not carry 20 A continuously."},{"question":"Where can I buy 3VA1020-4ED32-0AD0 and how is it quoted?","answer":"Sourced and quoted to order against an RFQ through independent industrial-automation distribution. Availability and current pricing are confirmed at quote time — no stock count or price figure published here."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1020-4ED32-0AD0","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/3VA1020-4ED32-0AD0 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}}