{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1120-3ED32-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1120-3ED32-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1120-3ED32-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1120-3ED32-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1120-3ED32-0AA0, 3-pole molded case circuit breaker, 20 A at 40 °C, TM210 thermal-magnetic trip, 75.6 kA interrupting at 240 V AC.","salesMarkdown":"It's built for line protection — the workhorse of a distribution panel or motor branch circuit where you need adjustable overload and fixed instantaneous short-circuit response. At 240 V AC it can interrupt 75.6 kA, which gives solid SCCR headroom for most industrial service entrances or sub-feeders. The interrupting rating drops to 52.5 kA at 415 V and 32 kA at 440 V, so check your available fault current before specifying — that 75.6 kA number only holds at the lower voltage. ## Sizing and thermal performance At 60 °C and 65 °C it still carries 19 A, and at 70 °C it stays at 19 A. That's a wide thermal plateau; you won't lose capacity unless your enclosure runs hotter than 55 °C regularly. Maximum power loss is 12 W. For a 20 A MCCB that's reasonable — it won't cook adjacent devices in a crowded panel, but don't stack it tight against heat-sensitive electronics without a little air gap. Footprint is 76.2 mm wide, 130 mm tall, 70 mm deep — standard for a SENTRON 3VA frame. It's a plain line-protection MCCB — if you need shunt trip or remote status, you're looking at a different order code in the 3VA family.","metaTitle":"Siemens 3VA1120-3ED32-0AA0 SENTRON MCCB, 20A, 75.6kA at 240V","metaDescription":"Siemens SENTRON 3VA1120-3ED32-0AA0 molded case circuit breaker, 3-pole, 20A rated at 40°C, TM210 trip, 75.6kA interrupting at 240V. Active production. Available to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","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":"75.6 kA","at 415 V":"52.5 kA","at 440 V":"32 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":"No","Design Of The Product":"Line protection","Communication Function":"No","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","power loss [W] / maximum":"12 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","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","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":"Yes","Protection Function Of The Overcurrent Release":"LI","number of CO contacts / for auxiliary contacts":"0","Switching Capacity Class Of The Circuit Breaker":"N","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":"https://cdn.aoctrl.com/bcc83586272f32fcc81c4c9a7e6283be.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=490519&mlfb=3VA1120-3ED32-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1120-3ED32-0AA0/alternatives.json"},"ai":{"faq":[{"question":"What is the trip unit type on this MCCB?","answer":"It uses a TM210 thermal-magnetic overcurrent release — fixed thermal and magnetic settings for line protection."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1120-3ED32-0AA0","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/3VA1120-3ED32-0AA0 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}}