{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2440-8JQ42-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2440-8JQ42-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA2440-8JQ42-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2440-8JQ42-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2440-8JQ42-0AA0, molded case circuit breaker, 4-pole, 400 A rated current, ETU560 electronic trip unit, breaking capacity 440 kA at 240 V, 330 kA at 415 V, 330 kA at 440 V, 220 kA at 500 V, 53 kA at 690 V.","salesMarkdown":"The Siemens SENTRON 3VA2440-8JQ42-0AA0 is a 4-pole molded case circuit breaker rated for 400 A continuous current across the full ambient range from 40 °C to 70 °C — no derating needed up to that ceiling. That flat thermal curve is unusual; most MCCBs start to derate above 40 °C, so this one simplifies panel sizing in warm enclosures or near other heat sources. Breaking capacity reaches 440 kA at 240 V, 330 kA at 415 V and 440 V, 220 kA at 500 V, and 53 kA at 690 V — figures that place it well above typical distribution-level fault currents. The ETU560 electronic trip unit provides adjustable long-time pickup (lg) from 0.8 s to 400 A and short-time pickup (li) from 600 A to 4400 A, giving selectivity tuning for downstream feeders. It includes ground-fault monitoring via summation current formation on L + N conductor and supports communication functions, so it can report status and trip events to a higher-level control system. The 184 mm width occupies four 45 mm pole spaces; the 110 mm depth fits standard 200 mm deep enclosures with clearance for rear-mounted busbars. An optional motor drive is available for remote switching.","metaTitle":"Siemens 3VA2440-8JQ42-0AA0 SENTRON MCCB, 400 A, 4-Pole, ETU5","metaDescription":"Siemens SENTRON 3VA2440-8JQ42-0AA0 molded case circuit breaker, 400 A rated current, 4-pole, ETU560 electronic trip unit, 440 kA at 240 V. Active production. Sourced 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":"184 mm","Height":"248 mm","at 240 V":"440 kA","at 415 V":"330 kA","at 440 V":"330 kA","at 500 V":"220 kA","at 690 V":"53 kA","at 40 °C":"400 A","at 45 °C":"400 A","at 50 °C":"400 A","at 55 °C":"400 A","at 60 °C":"400 A","at 65 °C":"400 A","at 70 °C":"400 A","Depth [In]":"4.3 in","Width [In]":"7.2 in","Height [In]":"9.8 in","Number Of Poles":"4","Product version":"Line protection","lifecycle_stage":"current","Product Brand Name":"SENTRON","Product Designation":"Molded case circuit breaker","Communication Function":"Yes","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","power loss [W] / maximum":"63.5 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","Ground-Fault Monitoring Version":"Summation current formation L + N conductor","Tension assignée d'isolement Ui":"800 V","Design Of The Overcurrent Release":"ETU560","protection class IP / on the front":"IP40","reference code / acc. to IEC 81346-2":"Q","Product Extension / Optional / Motor Drive":"Yes","Adjustable response value current / lg max.":"400 A","Adjustable response value current / lg min.":"0.8 s","Adjustable response value current / li max.":"4 400 A","Adjustable response value current / li min.":"600 A","Adjustable response value current / tg min.":"0.05 s","Neutral conductors / upgradeable/retrofittable":"No","Protection Function Of The Overcurrent Release":"LSIG","number of CO contacts / for auxiliary contacts":"0","Switching Capacity Class Of The Circuit Breaker":"L","Mechanical Service Life (Switching 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","Type of connectable conductor cross-section, connection screw, width x thickness , max.":"35 x 10 mm","Type of connectable conductor cross-section, connection screw, width x thickness , min.":"20 x 1 mm"}},"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=484523&mlfb=3VA2440-8JQ42-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2440-8JQ42-0AA0/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of 3VA2440-8JQ42-0AA0 at 415 V?","answer":"330 kA at 415 V. At 240 V it is 440 kA, at 440 V it is 330 kA, at 500 V it is 220 kA, and at 690 V it is 53 kA."},{"question":"What trip unit does the 3VA2440-8JQ42-0AA0 use?","answer":"It uses the ETU560 electronic overcurrent release, with adjustable long-time pickup (lg) from 0.8 s to 400 A and short-time pickup (li) from 600 A to 4400 A."},{"question":"Where can I buy 3VA2440-8JQ42-0AA0?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2440-8JQ42-0AA0","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/3VA2440-8JQ42-0AA0 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}}