{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1020-4ED36-0BA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1020-4ED36-0BA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1020-4ED36-0BA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1020-4ED36-0BA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1020-4ED36-0BA0, molded case circuit breaker, 3-pole, 20 A (40 °C), TM210 overcurrent release, 121 kA at 240 V, undervoltage release, line protection.","salesMarkdown":"It carries a 20 A rating at 40 °C (flat to 55 °C, then derating to 19 A at 70 °C) across three poles, with a TM210 thermal-magnetic overcurrent release that handles both overload and short-circuit trip curves. An undervoltage release (UVR) is built in, so the breaker drops out when control voltage falls below the dropout threshold, a common requirement for emergency-stop chains or undervoltage protection schemes. ## Breaking capacity across voltages The interrupting rating varies with system voltage: 121 kA at 240 V, 75.6 kA at 415 V, 52.5 kA at 440 V, and 11.9 kA at both 500 V and 690 V. That drop at higher voltages is typical for a thermal-magnetic MCCB — the arc extinction gets harder as voltage rises. For a 400 V distribution panel, the 75.6 kA figure gives substantial SCCR headroom against most transformer-fed faults. The breaker measures 76.2 mm wide, 130 mm tall, and 70 mm deep — a standard 3-pole MCCB footprint that fits Siemens' own SENTRON mounting plates and most DIN-rail adapters. The supplied basic switch (3VA10204ED360AA0) is the core switching mechanism; the order code adds the UVR and TM210 release as factory-installed options.","metaTitle":"Siemens 3VA1020-4ED36-0BA0 SENTRON MCCB, 20 A, 3-Pole, 121 k","metaDescription":"Siemens SENTRON 3VA1020-4ED36-0BA0 molded case circuit breaker, 20 A rated at 40 °C, 3-pole, 121 kA breaking at 240 V. TM210 release, undervoltage release. Active production. Sourc","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":"3VA10204ED360AA0","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":"3VA9608-0BB11","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":"box terminal on both sides","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=177242&mlfb=3VA1020-4ED36-0BA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1020-4ED36-0BA0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1020-4ED36-0BA0 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 — submit an RFQ for a firm price and lead time."},{"question":"What is the breaking capacity of 3VA1020-4ED36-0BA0 at 240 V?","answer":"The interrupting rating is 121 kA at 240 V, with lower values at higher voltages: 75.6 kA at 415 V, 52.5 kA at 440 V, and 11.9 kA at 500 V and 690 V."},{"question":"Does 3VA1020-4ED36-0BA0 include an undervoltage release?","answer":"Yes, it is equipped with an undervoltage release (UVR) as part of the factory configuration, designed to trip the breaker when control voltage drops below the dropout threshold."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1020-4ED36-0BA0","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/3VA1020-4ED36-0BA0 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}}