{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2340-6HN42-0KF0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2340-6HN42-0KF0","canonicalUrl":"https://aoctrl.com/siemens/3VA2340-6HN42-0KF0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2340-6HN42-0KF0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2340-6HN42-0KF0, molded case circuit breaker, 4-pole, 400 A, ETU350 electronic trip unit, line protection version.","salesMarkdown":"The 4-pole configuration covers three-phase plus neutral, with the N-conductor protection adjustable OFF, 50%, or 100% of the phase rating. The interrupting curve drops to 187 kA at 415 V, 85 kA at 440 V, 55 kA at 500 V, and 7.5 kA at 690 V. For a 400 A feeder on a 480 V system, you've got roughly 85 kA of SCCR headroom — enough for most industrial switchboards. The ETU350 release gives you adjustable long-time pickup (Ir), short-time pickup and delay (Isd, tsd), and instantaneous (Ii) settings, plus a ground-fault option if you add the module. The thermal derating curve is flat to 50 °C, then drops to 385 A at 55 °C and 340 A at 70 °C — so if the panel runs hot, you lose about 15% of the ampacity at the top end. The 3VA2340-6HN42-0KF0 measures 248 mm tall, 184 mm wide, and 110 mm deep. That 184 mm width (7.2 inches) is a standard 4-pole MCCB footprint — it'll drop into the same DIN-rail or panel-mount cutout as other SENTRON 3VA 4-pole frames. The IP40 front protection means it's rated for indoor panel use where no washdown or dust ingress is expected.","metaTitle":"Siemens 3VA2340-6HN42-0KF0 SENTRON MCCB, 400 A, 4-Pole, ETU3","metaDescription":"Siemens SENTRON 3VA2340-6HN42-0KF0 molded case circuit breaker, 400 A continuous, 4-pole, ETU350 release, 242 kA 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":"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":"7.5 kA","at 40 °C":"400 A","at 45 °C":"400 A","at 50 °C":"400 A","at 55 °C":"385 A","at 60 °C":"370 A","at 65 °C":"355 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","Latching - endurance":"20 000","Communication Function":"No","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","Power loss [W] / maximum":"96 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 / Ir max.":"400 A","Adjustable response value current / li max.":"4 000 A","Adjustable response value current / li min.":"4 000 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","Protective function of the overcurrent release":"LSI","Switching capacity class of the circuit breaker":"H","Max. rated operational current of the frame size":"400 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","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/c1b3b6c5f6d67465025ac41848ceb75e.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=878028&mlfb=3VA2340-6HN42-0KF0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2340-6HN42-0KF0/alternatives.json"},"ai":{"faq":[{"question":"What is the interrupting capacity at 480 V?","answer":"At 440 V it's rated 85 kA; at 500 V it's 55 kA. For a 480 V system, the 85 kA rating at 440 V is the closest published figure — expect similar headroom."},{"question":"Where can I buy the 3VA2340-6HN42-0KF0 and get a price?","answer":"This part is sourced to order against an RFQ through independent distribution. Submit an RFQ for current availability and pricing — no stock count or price is published here."},{"question":"What does the ETU350 release let me adjust?","answer":"The ETU350 is an electronic trip unit with adjustable long-time pickup (Ir), short-time pickup and delay (Isd, tsd), and instantaneous (Ii) settings. The N-conductor protection can be set OFF, 50%, or 100% of the phase rating."},{"question":"Will this drop into a panel designed for a 5SQ2670-2YA16?","answer":"The 3VA2340-6HN42-0KF0 is a SENTRON 3VA frame MCCB; the 5SQ2670-2YA16 is a different Siemens series. The footprint and mounting may differ — verify the cutout dimensions and bus bar spacing before substituting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2340-6HN42-0KF0","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/3VA2340-6HN42-0KF0 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}}