{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1120-6EF32-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1120-6EF32-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1120-6EF32-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1120-6EF32-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1120-6EF32-0AA0, molded case circuit breaker, 3-pole, 20 A, TM240 thermal-magnetic release, line protection, 220 kA at 240 V.","salesMarkdown":"The headline number is the interrupting capacity: 220 kA at 240 V, dropping to 154 kA at 415 V, 121 kA at 440 V, and 17 kA at 500 V and 690 V. The thermal derating curve is flat from 40 °C to 55 °C at 20 A, then steps down to 19 A at 60 °C through 70 °C — so in a warm panel you lose only 1 A. Power loss peaks at 12 W. The adjustable instantaneous pickup (li) maxes out at 320 A — that's 16x the continuous rating, giving you headroom for motor inrush or transformer magnetizing current without nuisance tripping. The TM240 release is a fixed thermal-magnetic type; no electronic adjustment for long-time or short-time delays. Optional motor drive is available for remote operation. The 3-pole footprint is standard for this class — the 76.2 mm width is three modular units (each 25.4 mm). Verify gland-plate clearance for the 70 mm depth, especially if you're adding the optional motor drive.","metaTitle":"Siemens 3VA1120-6EF32-0AA0 SENTRON MCCB, 20 A, 3-Pole, 220 k","metaDescription":"Siemens SENTRON 3VA1120-6EF32-0AA0 molded case circuit breaker, 20 A, 3-pole, TM240 release, 220 kA at 240 V. Current lifecycle. Quoted to order against RFQ.","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","at 240 V":"220 kA","at 415 V":"154 kA","at 440 V":"121 kA","at 500 V":"17 kA","at 690 V":"17 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","Number Of Poles":"3","Product version":"Line protection","lifecycle_stage":"current","Product Brand Name":"SENTRON","Product Designation":"Molded case circuit breaker","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","rated insulation voltage Ui":"800 V","Courant permanent assigné Iu":"20 A","Ground-Fault Monitoring Version":"Without","Design Of The Overcurrent Release":"TM240","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 IEC 81346-2":"Q","Max. rated operational voltage Ue with DC":"500 V","Product Extension / Optional / Motor Drive":"Yes","Adjustable response value current / li max.":"320 A","Adjustable response value current / li min.":"160 A","Neutral conductors / upgradeable/retrofittable":"No","Protection Function Of The Overcurrent Release":"LI","number of CO contacts / for auxiliary contacts":"0","Switching Capacity Class Of The Circuit Breaker":"H","Max. rated operational current of the frame size":"160 A","Mechanical Service Life (Switching 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","Type of connectable conductor cross-section, connection screw, width x thickness , max.":"17 x 6.5 mm","Type of connectable conductor cross-section, connection screw, width x thickness , min.":"12 x 1 mm"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/6ec9182b77f509e7b0f6f8ce460b211a.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=243929&mlfb=3VA1120-6EF32-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1120-6EF32-0AA0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1120-6EF32-0AA0 and get a price?","answer":"This part is sourced to order against an RFQ through independent distribution. Submit a request with your quantity and target delivery; availability and current pricing are confirmed at quote time."},{"question":"What is the closest functional alternative to 3VA1120-6EF32-0AA0?","answer":"The 3VA1020-3ED36-0AA0 is a functional peer in the same SENTRON 3VA family, but it uses an electronic release (ETU) instead of the TM240 thermal-magnetic release. That changes the trip curve adjustability — the ETU offers LSIG or LSI protection with adjustable time delays, while the TM240 is fixed thermal-magnetic. Panel footprint and interrupting ratings differ; verify coordination before substituting."},{"question":"What are the key ratings for this MCCB?","answer":"Continuous current Iu is 20 A, interrupting capacity is 220 kA at 240 V, 154 kA at 415 V, 121 kA at 440 V, and 17 kA at 500 V and 690 V. The TM240 release has an adjustable instantaneous pickup up to 320 A. Rated insulation voltage is 800 V."},{"question":"Does 3VA1120-6EF32-0AA0 have communication capability?","answer":"No. This version has no communication function. It is a standalone line-protection MCCB with a thermal-magnetic release."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1120-6EF32-0AA0","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/3VA1120-6EF32-0AA0 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}}