{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1020-4ED32-0BA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1020-4ED32-0BA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1020-4ED32-0BA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1020-4ED32-0BA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1020-4ED32-0BA0, molded case circuit breaker (MCCB), 3-pole, 20 A rated current, TM210 thermal-magnetic release, 121 kA breaking capacity at 240 V AC, with undervoltage release.","salesMarkdown":"Three poles, 20 A continuous at 40 °C through 55 °C, and it holds the same 20 A all the way up to 55 °C before it starts to derate: at 60 °C it's 19 A, at 65 °C it's 19 A, and at 70 °C it's 19 A. That's a solid thermal curve for a panel that runs warm — you don't lose headroom until you're past 55 °C. The overcurrent release is a TM210 — a thermal-magnetic type, fixed at 20 A, no electronic adjustment. That means the trip curve is set at the factory: thermal for overloads, magnetic for short-circuits. No dip switches, no dials, no confusion on a panel rebuild. The auxiliary release fitted is an undervoltage release (UVR), so if the control voltage drops below its dropout threshold the breaker opens — common on machine safety circuits where a loss of control power should kill the load. Breaking capacity is where this breaker earns its keep in a high-fault panel. At 240 V it interrupts 121 kA; at 415 V it's 75.6 kA; at 440 V it's 52.5 kA; at 500 V and 690 V it's 11.9 kA. The 3VA1020-4ED32-0BA0 measures 70 mm deep, 76.2 mm wide, and 130 mm tall. That 76.2 mm width — exactly 3 inches — is the standard 3-pole MCCB footprint for the SENTRON 3VA platform. The 70 mm depth means it clears most standard enclosure depths; check your gland plate clearance if the panel is shallow. The 3VA1020-4ED32-0BA0 is the line-protection variant with an undervoltage release. If your BOM calls for this exact code, the TM210 release and the UVR are the two features that lock the fit — a 3VA part with a different release or without the UVR won't drop in without rewiring the control circuit.","metaTitle":"Siemens 3VA1020-4ED32-0BA0 SENTRON MCCB, 20 A, 3-Pole, 121 k","metaDescription":"Siemens SENTRON 3VA1020-4ED32-0BA0 molded case circuit breaker. 20 A rated current, 3-pole, 121 kA breaking capacity at 240 V. TM210 release, undervoltage release included. Active","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":"3VA9608-0BB11","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":"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=259084&mlfb=3VA1020-4ED32-0BA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1020-4ED32-0BA0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy the 3VA1020-4ED32-0BA0 and get a price?","answer":"We source this part to order against an RFQ. Availability and current pricing are confirmed at quote time through our distribution network."},{"question":"What is the breaking capacity of the 3VA1020-4ED32-0BA0 at 240 V?","answer":"At 240 V it interrupts 121 kA. At 415 V it's 75.6 kA, at 440 V it's 52.5 kA, and at 500 V and 690 V it's 11.9 kA."},{"question":"Does the 3VA1020-4ED32-0BA0 include an undervoltage release?","answer":"Yes, it ships with an undervoltage release (UVR) fitted as the auxiliary release. The overcurrent release is a TM210 thermal-magnetic type, fixed at 20 A."},{"question":"Will the 3VA1020-4ED32-0BA0 drop into a panel designed for the 3VA1110-5EF32-0LA0?","answer":"Both are 3-pole SENTRON MCCBs on the same DIN-rail footprint, so the mechanical fit is the same. The difference is in the release: the 3VA1020-4ED32-0BA0 uses a fixed TM210 thermal-magnetic release at 20 A with an undervoltage release, while the 3VA1110-5EF32-0LA0 uses an electronic release with different adjustment ranges. If the panel was wired for the electronic release's accessory connections, the fixed TM210 may not connect the same way without rewiring the control circuit."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1020-4ED32-0BA0","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/3VA1020-4ED32-0BA0 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}}