{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2340-6JQ32-0KA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2340-6JQ32-0KA0","canonicalUrl":"https://aoctrl.com/siemens/3VA2340-6JQ32-0KA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2340-6JQ32-0KA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2340-6JQ32-0KA0, molded case circuit breaker, 3-pole, 400 A rated, adjustable trip unit 80–400 A, line protection design, with shunt trip release.","salesMarkdown":"The Siemens SENTRON 3VA2340-6JQ32-0KA0 is a 3-pole molded case circuit breaker rated for line protection, with a continuous current of 400 A at 40 °C and an adjustable trip unit spanning 80 A to 400 A. That adjustable range means one breaker body covers feeder circuits from a 100 A branch up to the full 400 A main — the trip unit sets the actual protection threshold, not the breaker frame. Its interrupting capacity is 242 kA at 240 V, 187 kA at 415 V and 440 V, 121 kA at 500 V, and 7.5 kA at 690 V. The sharp drop to 7.5 kA at 690 V means this breaker is sized for low-voltage distribution (≤ 600 V class), not 690 V motor circuits. Thermal derating is published: the breaker carries 400 A up to 50 °C, then steps down to 375 A at 55 °C, 350 A at 60 °C, 325 A at 65 °C, and 300 A at 70 °C. In a warm panel near the top of a switchboard, that 70 °C ambient knocks capacity by 25 % — plan the load accordingly. Power loss is 96 W maximum — negligible for panel thermal design but worth noting if the breaker is enclosed in a small non-ventilated box. The 138 mm width (5.43 in) is standard for a 3-pole 400 A frame — it fits existing SENTRON 3VA panel cutouts and busbar riser spacing without re-drilling. The -25 °C lower operating limit suits unheated electrical rooms in cold climates, but the breaker should not be switched on below that temperature without warming the enclosure first.","metaTitle":"Siemens 3VA2340-6JQ32-0KA0 SENTRON MCCB, 400 A, 3-Pole, Line","metaDescription":"Siemens 3VA2340-6JQ32-0KA0 SENTRON molded case circuit breaker. 3-pole, 400 A rated, adjustable 80–400 A trip, 242 kA at 240 V. In current production. Sourced to order. Request quo","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"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":"Yes","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","Of The Supplied Basic Switch":"3VA2340-6JQ32-0AA0","Design Of The Auxiliary Switch":"Without","Design Of The Auxiliary Release":"shunt trip (STL)","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%","Of The Integrated Auxiliary Trip Unit":"3VA9688-0BL33","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=157292&mlfb=3VA2340-6JQ32-0KA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2340-6JQ32-0KA0/alternatives.json"},"ai":{"faq":[{"question":"What is the interrupting capacity of 3VA2340-6JQ32-0KA0 at 240 V?","answer":"242 kA at 240 V. At 415 V and 440 V it is 187 kA, at 500 V it is 121 kA, and at 690 V it drops to 7.5 kA."},{"question":"What is the adjustable trip range on this MCCB?","answer":"The trip unit is adjustable from 80 A to 400 A, with a full-scale value of 400 A. The initial setting is 80 A out of the box."},{"question":"Where can I buy 3VA2340-6JQ32-0KA0 and get current pricing?","answer":"This part is sourced to order against an RFQ through independent distribution. Submit a request for quote — availability and current pricing are confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2340-6JQ32-0KA0","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/3VA2340-6JQ32-0KA0 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}}