{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1020-4ED32-0CA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1020-4ED32-0CA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1020-4ED32-0CA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1020-4ED32-0CA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1020-4ED32-0CA0, molded case circuit breaker, 3-pole, 20 A rated at 40 °C, TM210 thermal-magnetic release, 121 kA breaking capacity at 240 V AC, line protection design, with undervoltage release.","salesMarkdown":"It is a 3-pole unit rated 20 A continuous at 40 °C (derates to 19 A at 65 °C), with a TM210 thermal-magnetic overcurrent release — the thermal element handles overload timing, the magnetic element handles instantaneous short-circuit pickup. The breaking capacity is 121 kA at 240 V AC, 75.6 kA at 415 V, 52.5 kA at 440 V, and 11.9 kA at 500 V or 690 V — numbers that define where this breaker can safely interrupt a fault without welding contacts or venting plasma. ## Built-in undervoltage release — what that means for the panel That is useful in safety circuits or motor starters where a loss of control power should drop the load immediately, rather than letting the breaker stay closed and the motor restart unexpectedly when power returns. Dimensions are 130 mm high, 76.2 mm wide, 70 mm deep — a standard 3-pole MCCB footprint that fits most DIN-rail or panel-mount enclosures without surprises.","metaTitle":"Siemens 3VA1020-4ED32-0CA0 SENTRON MCCB, 20 A, 3-Pole, 121 k","metaDescription":"Siemens 3VA1020-4ED32-0CA0 SENTRON molded case circuit breaker, 20 A rated, 3-pole, 121 kA breaking capacity at 240 V. Line protection with TM210 overcurrent release and undervolta","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":"No","lifecycle_stage":"current","Product Brand Name":"SENTRON","Product Designation":"Molded case circuit breaker","Undervoltage Release":"Yes","Design Of The Product":"Line protection","Communication Function":"No","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","power loss [W] / maximum":"14.5 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":"undervoltage release (UVR)","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":"3VA9608-0BB24","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=215843&mlfb=3VA1020-4ED32-0CA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1020-4ED32-0CA0/alternatives.json"},"ai":{"faq":[{"question":"Does 3VA1020-4ED32-0CA0 include an undervoltage release?","answer":"Yes, it includes an undervoltage release (UVR) as the auxiliary release."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1020-4ED32-0CA0","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/3VA1020-4ED32-0CA0 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}}