{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2340-0HN42-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2340-0HN42-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA2340-0HN42-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2340-0HN42-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2340-0HN42-0AA0, 4-pole molded case circuit breaker (MCCB), 400 A continuous, ETU350 electronic trip unit, 440 kA at 415 V AC.","salesMarkdown":"The Siemens SENTRON 3VA2340-0HN42-0AA0 is a 4-pole molded case circuit breaker (MCCB) rated for 400 A continuous current at 40 °C, with an electronic overcurrent release type ETU350. The 400 A rating holds across 40 °C to 50 °C without derating; at 55 °C it derates to 385 A, at 60 °C to 370 A, and at 70 °C to 340 A. If your enclosure ambient runs above 50 °C, factor the thermal curve into the load schedule. The IP40 front protection is typical for enclosed distribution; no additional gasketing is needed inside a rated enclosure. The ETU350 electronic trip unit offers adjustable N-conductor protection (OFF, 50%, 100%) and a fixed I²t curve — no adjustable I-t setting. The undervoltage release and voltage trigger are not fitted on this variant; communication function is absent, so it is a standalone thermal-magnetic replacement with electronic trip logic.","metaTitle":"Siemens SENTRON 3VA2340-0HN42-0AA0 MCCB, 400 A, 4-Pole, ETU3","metaDescription":"Siemens SENTRON 3VA2340-0HN42-0AA0 molded case circuit breaker, 400 A, 4-pole, ETU350 trip unit, 440 kA at 415 V. Active production, sourced to order against 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":"184 mm","title":"3VA2340-0HN42-0AA0","Height":"248 mm","at 415 V":"440 kA","at 690 V":"187 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","Depth [In]":"4.33 in","Width [In]":"7.24 in","Height [In]":"9.76 in","description":"circuit breaker 3VA2 IEC frame 400 breaking capacity class E Icu=200 kA @ 415 V 4-pole, line protection ETU350, LSI, In=400A overload protection Ir=160A... 400A short circuit protection Isd=1,5...10xIr, Ii=12xIn neutral protection adjustable(OFF 50% 100%) busbar connection","Trip Indicator":"No","Number Of Poles":"4","Product version":"Line protection","Voltage Trigger":"No","lifecycle_stage":"current","Product Brand Name":"SENTRON","Product Designation":"Molded case circuit breaker","Undervoltage Release":"No","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","Courant permanent assigné Iu":"400 A","design of I-trip / adjustable":"No","Ground-Fault Monitoring Version":"Without","Insulation Voltage / Rated Value":"800 V","Design Of The Overcurrent Release":"ETU350","protection class IP / on the front":"IP40","design of the N-conductor protection":"adjustable OFF; 50%; 100%","operating voltage / at AC / rated value":"690 V","reference code / according to IEC 81346-2":"Q","Continuous Current / Rated Value / Maximum":"400 A","Product Extension / Optional / Motor Drive":"Yes","Adjustable response value current / li max.":"4 800 A","let-through energy characteristic / at 415 V":"DE_3VA2_3u4_400A_ETU_line u starter u motor_3u4p_415V","let-through energy characteristic / at 690 V":"DE_3VA2_3u4_400A_ETU_line u starter u motor_3u4p_690V","product feature / for L-tripping / adjustable":"Yes","Neutral conductors / upgradeable/retrofittable":"No","Protection Function Of The Overcurrent Release":"LSI","number of CO contacts / for auxiliary contacts":"0","Switching Capacity Class Of The Circuit Breaker":"E","set values setting current (Ii) / for I-tripping":"12","Mechanical Service Life (Switching Cycles) / Typical":"20 000","Tripping Characteristic / Of The Lower Tolerance Band":"AK_3VA2_3_400A_ETU350_E_uT","Tripping Characteristic / Of The Upper Tolerance Band":"AK_3VA2_3_400A_ETU350_E_oT","reference value setting current (Ii) / for I-tripping":"x In","setting values setting current (InN) / for N-tripping":"0.5;1","reference value setting current (InN) / for N-tripping":"x Ir","Type Of Electrical Connection / For Main Current Circuit":"on both sides nut keeper kit","type of value list setting current (Ii) / for I-tripping":"Fest","type of value list setting current (InN) / for N-tripping":"St","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,"stockQuantity":0,"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=1417860&mlfb=3VA2340-0HN42-0AA0"},"ai":{"faq":[{"question":"How do I get current pricing and availability for 3VA2340-0HN42-0AA0?","answer":"Submit an RFQ through this listing; availability and current pricing are confirmed at quote time through independent distribution channels."},{"question":"What is 3VA2340-0HN42-0AA0's interrupting rating?","answer":"It is rated 440 kA at 415 V AC and 187 kA at 690 V AC."},{"question":"What trip unit does 3VA2340-0HN42-0AA0 use?","answer":"It uses the ETU350 electronic overcurrent release with adjustable N-conductor protection (OFF, 50%, 100%)."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2340-0HN42-0AA0","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/3VA2340-0HN42-0AA0 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}