{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2440-6HN42-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2440-6HN42-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA2440-6HN42-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2440-6HN42-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2440-6HN42-0AA0, 4-pole molded case circuit breaker, 400 A rated current, ETU350 electronic trip unit, line protection version.","salesMarkdown":"The Siemens 3VA2440-6HN42-0AA0 is a 4-pole SENTRON molded case circuit breaker (MCCB) rated for 400 A continuous current at 40 °C ambient, with an ETU350 electronic overcurrent release. The 400 A rating holds flat through 50 °C — only above that does it start to derate, dropping to 388 A at 55 °C and 352 A at 70 °C. So if your panel ambient runs at 55 °C, you're still good for a 388 A continuous load, not the full 400 A. The breaking capacity tells you where this breaker is comfortable: 242 kA at 240 V, 187 kA at 415 V, 85 kA at 440 V, 55 kA at 500 V, and 9 kA at 690 V. At 690 V the 9 kA is modest, so know your system voltage and fault level before committing. The 3VA2440-6HN42-0AA0 measures 184 mm wide by 248 mm high by 110 mm deep. Maximum power loss is 63.3 W, which matters for thermal management inside a sealed enclosure — that's heat that has to be vented or dissipated. ## ETU350 trip unit and protection capabilities The long-time delay (tr) is adjustable from 0.5 s to 17 s, which lets you coordinate with downstream breakers and upstream transformers. The N-conductor protection is adjustable — OFF, 50%, or 100% of the phase pickup — so you can set it for a reduced neutral or full-rated neutral depending on the system. No ground-fault monitoring on this version (the 'Without' designation), so if you need GF protection, you'll add an external module or pick a different variant.","metaTitle":"Siemens 3VA2440-6HN42-0AA0 4-Pole MCCB, 400 A, ETU350, 242 k","metaDescription":"Siemens SENTRON 3VA2440-6HN42-0AA0 molded case circuit breaker, 4-pole, 400 A, ETU350 release, 242 kA at 240 V. Current lifecycle stage, sourced to order. Request quote.","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":"242 kA","at 415 V":"187 kA","at 440 V":"85 kA","at 500 V":"55 kA","at 690 V":"9 kA","at 40 °C":"400 A","at 45 °C":"400 A","at 50 °C":"400 A","at 55 °C":"388 A","at 60 °C":"380 A","at 65 °C":"368 A","at 70 °C":"352 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","Latching - endurance":"15 000","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":"-40 °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 / Ir max.":"400 A","Adjustable response value current / li max.":"4 800 A","Adjustable response value current / li min.":"4 800 A","Adjustable response value current / lr min.":"160 A","Adjustable response value current / Isd max.":"4 000 A","Adjustable response value current / Isd min.":"600 A","Neutral conductors / upgradeable/retrofittable":"No","Number of CO contacts / for auxiliary contacts":"0","Protective function of the overcurrent release":"LSI","Switching capacity class of the circuit breaker":"H","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=51716&mlfb=3VA2440-6HN42-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2440-6HN42-0AA0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy the 3VA2440-6HN42-0AA0 and how is it quoted?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time."},{"question":"What are the key ratings of the 3VA2440-6HN42-0AA0?","answer":"It is a 4-pole 400 A MCCB with an ETU350 electronic trip unit. Breaking capacity is 242 kA at 240 V, 187 kA at 415 V, 85 kA at 440 V, 55 kA at 500 V, and 9 kA at 690 V. Dimensions are 184 mm wide × 248 mm high × 110 mm deep."},{"question":"What is the depth of the 3VA2440-6HN42-0AA0?","answer":"The depth is 110 mm (4.3 inches)."},{"question":"What is the width of the 3VA2440-6HN42-0AA0?","answer":"The width is 184 mm (7.2 inches)."},{"question":"Does the 3VA2440-6HN42-0AA0 include ground fault protection?","answer":"No, this version is designated 'Without' ground fault monitoring. If you need ground fault protection, you will need an external module or a different variant."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2440-6HN42-0AA0","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/3VA2440-6HN42-0AA0 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}}