{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2440-5HN42-0KJ0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2440-5HN42-0KJ0","canonicalUrl":"https://aoctrl.com/siemens/3VA2440-5HN42-0KJ0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2440-5HN42-0KJ0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2440-5HN42-0KJ0, molded case circuit breaker, line protection, 4-pole, 400 A, ETU350 electronic trip unit, breaking capacity 187 kA at 240 V AC.","salesMarkdown":"## Rating and trip-unit profile The ETU350 electronic trip unit provides adjustable long-time (tr) and short-time (tsd) delay settings — tr from 0.5 to 17, tsd from 0.02 s to 0.4 s — letting you shape the trip curve to the load without swapping the breaker. Neutral protection is configurable as OFF, 50 %, or 100 % of the phase setting. Breaking capacity is voltage-dependent: 187 kA at 240 V, 121 kA at 415 V, 55 kA at 440 V, 36 kA at 500 V, and 9 kA at 690 V. Current rating holds flat at 400 A from 40 °C through 50 °C ambient, then derates to 384 A at 55 °C, 372 A at 60 °C, 356 A at 65 °C, and 340 A at 70 °C. Footprint is 184 mm wide by 248 mm tall by 110 mm deep. The 184 mm width (7.2 in) is the critical dimension for DIN-rail or panel-mount spacing — it occupies roughly four 45 mm pole positions. Rated insulation voltage Ui is 800 V, and the operating temperature range spans -25 °C to 70 °C, with storage from -40 °C to 80 °C.","metaTitle":"Siemens 3VA2440-5HN42-0KJ0 SENTRON MCCB, 400 A, 4-Pole, ETU3","metaDescription":"Siemens 3VA2440-5HN42-0KJ0 SENTRON molded case circuit breaker, 400 A rated current, 4 poles, ETU350 release, breaking capacity 187 kA at 240 V. Current lifecycle stage. Sourced to","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"Depth":"110 mm","Width":"184 mm","Height":"248 mm","at 240 V":"187 kA","at 415 V":"121 kA","at 440 V":"55 kA","at 500 V":"36 kA","at 690 V":"9 kA","at 40 °C":"400 A","at 45 °C":"400 A","at 50 °C":"400 A","at 55 °C":"384 A","at 60 °C":"372 A","at 65 °C":"356 A","at 70 °C":"340 A","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":"No","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":"-25 °C","Other Measurement Function":"No","Rated continuous current Iu":"400 A","Rated insulation voltage Ui":"800 V","Ground fault monitoring version":"Without","Design of the overcurrent release":"ETU350","Protection class IP / on the front":"IP40","Design of the N-conductor protection":"adjustable OFF; 50%; 100%","Reference code / acc. to DIN EN 81346-2":"Q","Adjustable response value time / tr max.":"17","Adjustable response value time / tr min.":"0.5","Adjustable response value time / tsd max.":"0.4 s","Adjustable response value time / tsd min.":"0.02 s","Product extension / optional / motor drive":"Yes","Adjustable response value current / lg min.":"4 000 A","Adjustable response value current / li max.":"4 800 A","Adjustable response value current / li min.":"4 800 A","Neutral conductors / upgradeable/retrofittable":"No","Protection Function Of The Overcurrent Release":"LSI","Switching capacity class of the circuit breaker":"M","Max. rated operational current of the frame size":"630 A","Max. rated operational voltage Ue with AC 50/60Hz":"690 V","Mechanical service life (switching cycles) / typical":"15 000","Type of electrical connection / for main current circuit":"Lug terminal","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","Type of connectable conductor cross-section, connection screw, width x thickness , min.":"20 x 1"}},"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=1266191&mlfb=3VA2440-5HN42-0KJ0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2440-5HN42-0KJ0/alternatives.json"},"ai":{"faq":[{"question":"What is 3VA2440-5HN42-0KJ0's listed depth (110 mm) on this component line?","answer":"The depth is 110 mm. That dimension, together with the 184 mm width and 248 mm height, defines the panel cutout and enclosure clearance required."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2440-5HN42-0KJ0","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/3VA2440-5HN42-0KJ0 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}}