{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2340-8KQ32-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2340-8KQ32-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA2340-8KQ32-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2340-8KQ32-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2340-8KQ32-0AA0, molded case circuit breaker, 3-pole, 400 A continuous, line protection, with communication function and ground-fault monitoring.","salesMarkdown":"## 400 A MCCB with ground-fault and comms — what you need to know It carries a trip unit adjustable from 600 A to 4 000 A, so you can fine-tune the overload threshold to match your transformer or feeder without swapping hardware. The interrupting rating drops as voltage rises — expected for any MCCB. At 240 V it clears 440 kA; at 415 V and 440 V it holds 330 kA; at 500 V it still manages 220 kA; at 690 V it's 52.5 kA. For a 400 A frame these are strong numbers, especially the 330 kA at 415 V — typical for large transformer secondaries or industrial service entrances where fault current can exceed 200 kA. Above that it derates: 375 A at 55 °C, 350 A at 60 °C, 325 A at 65 °C, and 300 A at 70 °C. The storage limit matters if you're holding spares in a non-conditioned warehouse — keep them above -40 °C and below 80 °C and they'll be fine on the shelf for years.","metaTitle":"Siemens 3VA2340-8KQ32-0AA0 SENTRON MCCB, 400 A, 440 kA at 24","metaDescription":"Siemens SENTRON 3VA2340-8KQ32-0AA0 molded case circuit breaker, 400 A continuous, 3-pole, line protection. Breaking capacity 440 kA at 240 V. Active production. Quoted on request.","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","Maximum":"4 000 A","Minimum":"600 A","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":"375 A","at 60 °C":"350 A","at 65 °C":"325 A","at 70 °C":"300 A","Depth [In]":"4.33 in","Width [In]":"5.43 in","Height [In]":"9.76 in","Initial Value":"80 A","Trip Indicator":"No","Number Of Poles":"3","Voltage Trigger":"No","lifecycle_stage":"current","Full-Scale Value":"400 A","Product Brand Name":"SENTRON","Product Designation":"Molded case circuit breaker","Undervoltage Release":"No","Design Of The Product":"Line protection","Communication Function":"Yes","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":"Yes","Ground-Fault Monitoring Version":"Summation current formation L-conductor","Continuous Current / Rated Value":"400 A","Insulation Voltage / Rated Value":"800 V","Design Of The Overcurrent Release":"ETU860","protection class IP / on the front":"IP40","design of the N-conductor protection":"adjustable OFF; 20% to 160%","Product Function / Grounding Protection":"Yes","operating voltage / at AC / rated value":"690 V","reference code / according to IEC 81346-2":"Q","Continuous Current / Rated Value / Maximum":"400 A","Product Extension / Optional / Motor Drive":"Yes","Protection Function Of The Overcurrent Release":"LSIG","number of CO contacts / for auxiliary contacts":"0","Switching Capacity Class Of The Circuit Breaker":"L","Mechanical Service Life (Operating 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"}},"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=355831&mlfb=3VA2340-8KQ32-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2340-8KQ32-0AA0/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2340-8KQ32-0AA0","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/3VA2340-8KQ32-0AA0 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}}