{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2340-5JQ32-0BL0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2340-5JQ32-0BL0","canonicalUrl":"https://aoctrl.com/siemens/3VA2340-5JQ32-0BL0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2340-5JQ32-0BL0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2340-5JQ32-0BL0, 3-pole molded case circuit breaker, 400 A (40 °C), 187 kA at 240 V, line protection, with undervoltage release and communication function.","salesMarkdown":"The Siemens SENTRON 3VA2340-5JQ32-0BL0 is a 3-pole molded case circuit breaker rated for 400 A continuous at 40 °C, with a maximum breaking capacity of 187 kA at 240 V. At 415 V and 440 V it still holds 121 kA, which covers most industrial 400 V-class distribution. At 690 V it drops to 7.5 kA, so if you're on a 690 V line, this breaker is for downstream sub-feeders only, not the main. Thermal derating is straightforward: 400 A from 40 °C to 50 °C, then 375 A at 55 °C, 350 A at 60 °C, 325 A at 65 °C, and 300 A at 70 °C. If your panel ambient runs above 50 °C, you lose 25 A per 5 °C step — plan the enclosure ventilation accordingly. This variant ships with an undervoltage release (UVR) as the auxiliary release, plus a 2-auxiliary-switch + 1-trip-alarm + 1-electrical-alarm HQ block. That's enough for remote status feedback and undervoltage protection in one package — no separate UVR module to wire in. The basic switch version is 3VA2340-5JQ32-0AA0; the -0BL0 suffix adds the communication function. If you need Modbus or PROFIBUS connectivity, this is the order code that carries it. Dimensions are 248 mm high, 138 mm wide, 110 mm deep — a standard SENTRON 3VA frame size that drops into existing Siemens panel layouts without re-drilling. Operating temperature range is -25 °C to 70 °C, storage from -40 °C to 80 °C. Max power loss is 98.5 W, so factor that into the enclosure thermal budget.","metaTitle":"Siemens SENTRON 3VA2340-5JQ32-0BL0 MCCB, 400 A, 187 kA at 24","metaDescription":"Siemens SENTRON 3VA2340-5JQ32-0BL0 molded case circuit breaker, 3-pole, 400 A rated at 40 °C, 187 kA breaking at 240 V. Current production. Quoted to order.","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":"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":"Yes","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":"Yes","Design Of The Product":"Line protection","Communication Function":"Yes","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","power loss [W] / maximum":"98.5 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","Of The Supplied Basic Switch":"3VA2340-5JQ32-0AA0","Design Of The Auxiliary Switch":"2 auxiliary switches + 1 trip alarm switch + 1 electrical alarm switch HQ","Design Of The Auxiliary Release":"undervoltage release (UVR)","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":"3VA9608-0BB11","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":"4","Of The Integrated Auxiliary Switch/Alarm Switch":"3VA9988-0AB22","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=353966&mlfb=3VA2340-5JQ32-0BL0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2340-5JQ32-0BL0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA2340-5JQ32-0BL0 and get a price?","answer":"This part is sourced through our independent distribution channel. Submit an RFQ for current pricing and availability — we quote each order individually."},{"question":"Will 3VA2340-5JQ32-0BL0 drop into a panel specified around 3VA2225-5JQ32-0AK0 without rewiring?","answer":"Both are SENTRON 3VA frame breakers, so the mounting footprint and bus connections are the same. The 3VA2340 is a higher-current frame (400 A vs the 3VA2225's lower rating), so verify the bus bar ampacity and cable lugs match the 400 A rating before swapping. The auxiliary and release wiring positions are identical."},{"question":"What is the depth of 3VA2340-5JQ32-0BL0?","answer":"The depth is 110 mm (4.33 in)."},{"question":"What is the width of 3VA2340-5JQ32-0BL0?","answer":"The width is 138 mm (5.43 in)."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2340-5JQ32-0BL0","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/3VA2340-5JQ32-0BL0 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}}