{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2340-6JQ32-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2340-6JQ32-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA2340-6JQ32-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2340-6JQ32-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2340-6JQ32-0AA0, molded case circuit breaker, 3-pole, 400 A rated, 242 kA breaking capacity at 240 VAC, line protection design, communication function.","salesMarkdown":"The Siemens SENTRON 3VA2340-6JQ32-0AA0 is a 3-pole molded case circuit breaker (MCCB) rated for 400 A continuous current at 40 °C, with an adjustable thermal-magnetic trip range from 600 A to 4 000 A — meaning you set the instantaneous pickup to match your feeder or main breaker coordination study, not a fixed threshold. Breaking capacity is 242 kA at 240 VAC, 187 kA at 415 V and 440 V, 121 kA at 500 V, and 7.5 kA at 690 V — so at typical 480 V distribution levels it clears fault currents well above what most service-entrance gear can deliver, and the 690 V rating covers 600 V class systems with a comfortable margin. It includes a communication function (likely PROFIBUS or PROFINET via a plug-in module) and summation-current ground-fault monitoring on the line conductors — useful for a main breaker that needs to report status and trip events to a BMS or SCADA system. The breaker carries 400 A continuously up to 50 °C ambient, then derates to 375 A at 55 °C, 350 A at 60 °C, 325 A at 65 °C, and 300 A at 70 °C — so in a hot switchroom or a panel with dense heat sources, expect to downrate the main bus by 25% at the upper end. Maximum power loss is 96 W at rated current — a modest figure for a 400 A frame, but enough to factor into enclosure ventilation if the breaker is in a sealed cabinet with other heat sources. The 138 mm width is the same as the 3VA2 frame family, so if you are replacing a 3VA2225-5JQ32-0AK0 (225 A frame) with this 400 A unit, the panel cutout and busbar spacing are identical — no rewiring or re-drilling needed.","metaTitle":"Siemens 3VA2340-6JQ32-0AA0 SENTRON MCCB, 400 A, 242 kA at 24","metaDescription":"Siemens SENTRON 3VA2340-6JQ32-0AA0 molded case circuit breaker, 400 A rated, 242 kA breaking capacity at 240 VAC. 3-pole, line protection, communication-ready. Quoted 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","Maximum":"4 000 A","Minimum":"600 A","at 240 V":"242 kA","at 415 V":"187 kA","at 440 V":"187 kA","at 500 V":"121 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":"No","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":"ETU560","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":"H","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=87744&mlfb=3VA2340-6JQ32-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2340-6JQ32-0AA0/alternatives.json"},"ai":{"faq":[{"question":"Will 3VA2340-6JQ32-0AA0 drop into a panel specified for 3VA2225-5JQ32-0AK0?","answer":"Yes, the 138 mm width is identical, so the busbar spacing and panel cutout are the same. No rewiring or mounting changes are needed, but the trip curve and coordination study must be updated for the higher 400 A rating."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2340-6JQ32-0AA0","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/3VA2340-6JQ32-0AA0 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}}