{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2340-8HM32-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2340-8HM32-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA2340-8HM32-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2340-8HM32-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"SENTRON 3VA2340-8HM32-0AA0, molded case circuit breaker, 3-pole, 400 A, line protection, ETU330 overcurrent release, 440 kA at 240 V.","salesMarkdown":"It's the kind of breaker you spec into a main feeder or a big motor branch circuit where you need serious fault interruption — 440 kA at 240 V, 330 kA at 415 V and 440 V, 220 kA at 500 V, and still 52.5 kA at 690 V. Those numbers aren't just for show: they tell you this breaker can clear a bolted fault at the main switchboard without the arc flashing over, which is what keeps the rest of the gear upstream from taking a hit. The continuous current rating holds flat at 400 A from 40 °C up to 50 °C, then starts to derate: 385 A at 55 °C, 370 A at 60 °C, 355 A at 65 °C, and 340 A at 70 °C. The 96 W maximum power loss means you size your enclosure ventilation accordingly; it's not a huge heat load for a single breaker, but in a dense lineup it adds up. IP40 front protection. That covers most industrial plant conditions — cold warehouses in winter, hot motor control centers in summer. The part accepts an optional motor drive for remote charging, which is handy if you're automating breaker reclosing in an unmanned substation.","metaTitle":"3VA2340-8HM32-0AA0 SENTRON MCCB, 400 A, 3-Pole, 440 kA at 24","metaDescription":"SENTRON 3VA2340-8HM32-0AA0 molded case circuit breaker, 400 A continuous, 3-pole, 440 kA at 240 V. Line protection with ETU330 release. IP40 front. Available to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"Depth":"110 mm","Width":"138 mm","Height":"248 mm","at 240 V":"440 kA","at 415 V":"330 kA","at 440 V":"330 kA","at 500 V":"220 kA","at 690 V":"52.5 kA","at 40 °C":"400 A","at 45 °C":"400 A","at 50 °C":"400 A","at 55 °C":"385 A","at 60 °C":"370 A","at 65 °C":"355 A","at 70 °C":"340 A","Depth [In]":"4.33 in","Width [In]":"5.43 in","Height [In]":"9.76 in","Trip Indicator":"No","Number Of Poles":"3","Product version":"Line protection","Voltage Trigger":"No","lifecycle_stage":"current","Product Brand Name":"SENTRON","Product Designation":"Molded case circuit breaker","Undervoltage Release":"No","Communication Function":"No","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","power loss [W] / maximum":"96 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":"400 A","Ground-Fault Monitoring Version":"Summation current formation L-conductor","Design Of The Overcurrent Release":"ETU330","protection class IP / on the front":"IP40","reference code / according to IEC 81346-2":"Q","Product Extension / Optional / Motor Drive":"Yes","Adjustable response value current / lg max.":"400 A","Adjustable response value current / lg min.":"80 A","Adjustable response value current / li max.":"4 000 A","Adjustable response value current / li min.":"600 A","Neutral conductors / upgradeable/retrofittable":"No","Protection Function Of The Overcurrent Release":"LIG","number of CO contacts / for auxiliary contacts":"0","Switching Capacity Class Of The Circuit Breaker":"L","Max. rated operational current of the frame size":"400 A","Mechanical Service Life (Switching Cycles) / Typical":"20 000","Type Of Electrical Connection / For Main Current Circuit":"on both sides nut keeper kit","Arrangement Of Electrical Connectors / For Main Current Circuit":"Front terminal","Type of connectable conductor cross-section, connection screw, width x thickness , max.":"35 x 10 mm","Type of connectable conductor cross-section, connection screw, width x thickness , min.":"20 x 1 mm"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/c1b3b6c5f6d67465025ac41848ceb75e.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=28511&mlfb=3VA2340-8HM32-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2340-8HM32-0AA0/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2340-8HM32-0AA0","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/3VA2340-8HM32-0AA0 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}}