{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2340-5KQ32-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2340-5KQ32-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA2340-5KQ32-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2340-5KQ32-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON molded case circuit breaker, 3VA2340-5KQ32-0AA0, 3-pole, 400 A continuous, 187 kA breaking capacity at 240 V, line protection design with communication function.","salesMarkdown":"The 3VA2340-5KQ32-0AA0 is a SENTRON molded case circuit breaker (MCCB) rated for 400 A continuous current at 40 °C, with a full-scale value of 400 A and an adjustable thermal-magnetic trip range from 80 A to 400 A. That 400 A continuous rating holds flat through 50 °C — only starts derating at 55 °C (375 A) and drops to 300 A at 70 °C, so in a warm enclosure you still have headroom. The interrupting capacity is the headline: 187 kA at 240 V, 121 kA at 415 V, 75.6 kA at 500 V, and still 7.5 kA at 690 V. Three-pole, line-protection design, with communication function for remote monitoring or trip-event capture. ## Sizing and thermal reality","metaTitle":"Siemens SENTRON 3VA2340-5KQ32-0AA0 MCCB, 400 A, 187 kA at 24","metaDescription":"Siemens SENTRON 3VA2340-5KQ32-0AA0 molded case circuit breaker, 400 A continuous, 187 kA at 240 V. Current lifecycle. Sourced 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":"110 mm","Width":"138 mm","Height":"248 mm","Maximum":"4 000 A","Minimum":"600 A","at 240 V":"187 kA","at 415 V":"121 kA","at 440 V":"121 kA","at 500 V":"75.6 kA","at 690 V":"7.5 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":"M","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=464440&mlfb=3VA2340-5KQ32-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2340-5KQ32-0AA0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA2340-5KQ32-0AA0?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"What is the breaking capacity of 3VA2340-5KQ32-0AA0 at different voltages?","answer":"At 240 V it interrupts 187 kA, at 415 V and 440 V it interrupts 121 kA, at 500 V it interrupts 75.6 kA, and at 690 V it interrupts 7.5 kA."},{"question":"What is the continuous current rating and how does it derate with temperature?","answer":"Continuous current rating is 400 A from 40 °C to 50 °C. It derates to 375 A at 55 °C, 350 A at 60 °C, 325 A at 65 °C, and 300 A at 70 °C."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2340-5KQ32-0AA0","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/3VA2340-5KQ32-0AA0 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}}