{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2440-7JQ32-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2440-7JQ32-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA2440-7JQ32-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2440-7JQ32-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2440-7JQ32-0AA0, molded case circuit breaker, 3-pole, 400 A, ETU560 electronic trip unit, breaking capacity 330 kA at 240 V, 242 kA at 415 V.","salesMarkdown":"The Siemens SENTRON 3VA2440-7JQ32-0AA0 is a 3-pole molded case circuit breaker rated for 400 A continuous current at 40 °C, with an ETU560 electronic trip unit. The ETU560 release is adjustable, with a maximum response time tr of 25 s, giving the commissioning engineer room to coordinate selectively with downstream breakers. Communication function is onboard, so it can report status and trip events to a higher-level control system without an external module. ## Thermal derating and enclosure planning If the panel ambient runs at 55 °C, the usable current drops to 376 A — factor that into the busbar and cable sizing. The 63.3 W maximum power loss at rated current must be dissipated inside the enclosure; a 110 mm depth × 138 mm width × 248 mm height footprint leaves room for side-by-side mounting on a DIN rail or direct panel mount, but the heat rise from three poles at full load needs ventilation or forced air above 50 °C. Front protection is IP40 — splash-proof from the front but not sealed against hose-down. Keep it inside a cabinet rated for the environment.","metaTitle":"Siemens 3VA2440-7JQ32-0AA0 SENTRON MCCB, 400 A, 3-pole, ETU5","metaDescription":"Siemens SENTRON 3VA2440-7JQ32-0AA0 molded case circuit breaker, 400 A continuous, 3-pole, ETU560 release, breaking capacity 330 kA at 240 V. Sourced to order against an 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","at 240 V":"330 kA","at 415 V":"242 kA","at 440 V":"242 kA","at 500 V":"187 kA","at 690 V":"9 kA","at 40 °C":"400 A","at 45 °C":"400 A","at 50 °C":"400 A","at 55 °C":"376 A","at 60 °C":"352 A","at 65 °C":"324 A","at 70 °C":"300 A","Depth [in]":"4.3 in","Width [in]":"5.4 in","Height [in]":"9.8 in","Limited To 1 S":"5 kA","Number of poles":"3","Product version":"Line protection","lifecycle_stage":"current","Limited To 0.5 S":"5 kA","Product brand name":"SENTRON","Product designation":"Molded case circuit breaker","Latching - endurance":"15 000","Communication Function":"Yes","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","Power loss [W] / maximum":"63.3 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-40 °C","Other Measurement Function":"No","Rated continuous current Iu":"400 A","Rated insulation voltage Ui":"800 V","Ground fault monitoring version":"Summation current formation L-conductor","Design of the overcurrent release":"ETU560","Protection class IP / on the front":"IP40","Reference code / acc. to DIN EN 81346-2":"Q","Adjustable response value time / tr max.":"25","Adjustable response value time / tr min.":"0.5","Adjustable response value time / tsd max.":"0.5 s","Adjustable response value time / tsd min.":"0.05 s","Product extension / optional / motor drive":"Yes","Adjustable response value current / Ir max.":"400 A","Adjustable response value current / lg max.":"400 A","Adjustable response value current / lg min.":"80 A","Adjustable response value current / li max.":"6 000 A","Adjustable response value current / li min.":"600 A","Adjustable response value current / lr min.":"160 A","Adjustable response value current / tg max.":"0.8 s","Adjustable response value current / tg min.":"0.05 s","Adjustable response value current / Isd max.":"4 000 A","Adjustable response value current / Isd min.":"240 A","Ground fault protection can be switched ON/OFF":"Yes","Neutral conductors / upgradeable/retrofittable":"Yes","Number of CO contacts / for auxiliary contacts":"0","Protective function of the overcurrent release":"LSIG","Switching capacity class of the circuit breaker":"C","Max. rated operational current of the frame size":"630 A","Max. rated operational voltage Ue with AC 50/60Hz":"690 V","Type of electrical connection / for main current circuit":"Lug terminal","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/0eb36652ce522f093395d6bd0dd27e34.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=3970&mlfb=3VA2440-7JQ32-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2440-7JQ32-0AA0/alternatives.json"},"ai":{"faq":[{"question":"What is the closest functional second-source for 3VA2440-7JQ32-0AA0?","answer":"The 5SQ2370-2YA05 is a peer in the same SENTRON family, but the 3VA2440-7JQ32-0AA0 uses an ETU560 electronic trip unit while the 5SQ2370-2YA05 uses a different release — verify coordination and trip curve compatibility before substituting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2440-7JQ32-0AA0","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/3VA2440-7JQ32-0AA0 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}}