{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2340-4HL42-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2340-4HL42-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA2340-4HL42-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2340-4HL42-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2 series, molded case circuit breaker, 400 A, 4-pole, ETU320 electronic trip unit, line protection version.","salesMarkdown":"The Siemens 3VA2340-4HL42-0AA0 is a SENTRON 3VA2 molded case circuit breaker (MCCB) rated for 400 A continuous current across a 40 °C to 50 °C ambient range, with the same 400 A rating holding at those temperatures. The interrupting ratings span from 121 kA at 240 V down to 7.5 kA at 690 V, so this breaker handles high-fault-capacity distribution panels without cascading upstream. The 400 A rating derates above 50 °C: 385 A at 55 °C, 370 A at 60 °C, 355 A at 65 °C, and 340 A at 70 °C. The ETU320 release supports adjustable N-conductor protection: OFF, 50 %, or 100 % of the phase current. That matters for 4-wire distribution where the neutral may carry harmonics or unbalanced return current. Maximum power loss is 96 W — account for that in the panel's thermal budget if the breaker is enclosed with other heat sources. Dimensions: 248 mm height, 184 mm width, 110 mm depth. The 110 mm depth is the body depth — verify clearance for the front rotary handle and cable lugs in your enclosure. Front-side IP40 protection means it's dust-protected but not sealed against water — suitable for indoor panel mounting, not washdown areas. That covers most unheated electrical rooms and outdoor enclosures in temperate climates.","metaTitle":"Siemens 3VA2340-4HL42-0AA0 SENTRON MCCB, 400 A, 4-Pole, ETU3","metaDescription":"Siemens 3VA2340-4HL42-0AA0 SENTRON molded case circuit breaker, 400 A, 4-pole, ETU320 release, 121 kA at 240 V. Active production, sourced to order. Request a quote.","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","title":"3VA2340-4HL42-0AA0","Height":"248 mm","at 240 V":"121 kA","at 415 V":"75.6 kA","at 440 V":"75.6 kA","at 500 V":"52.5 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","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 S Icu=36kA @ 415V 4-pole, line protection ETU320, LI, In=400A overload protection Ir=160A...400A short-circuit protection Ii=1.5...10 x In N conductor protection adjustable (OFF,50%,100%) nut keeper kit","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","rated insulation voltage Ui":"800 V","Courant permanent assigné Iu":"400 A","Ground-Fault Monitoring Version":"Without","Design Of The Overcurrent Release":"ETU320","protection class IP / on the front":"IP40","design of the N-conductor protection":"adjustable OFF; 50%; 100%","reference code / acc. to IEC 81346-2":"Q","Product Extension / Optional / Motor Drive":"Yes","Adjustable response value current / li max.":"4 000 A","Adjustable response value current / li min.":"600 A","Neutral conductors / upgradeable/retrofittable":"No","Protection Function Of The Overcurrent Release":"LI","number of CO contacts / for auxiliary contacts":"0","Switching Capacity Class Of The Circuit Breaker":"S","Max. rated operational current of the frame size":"400 A","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,"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=906679&mlfb=3VA2340-4HL42-0AA0"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2340-4HL42-0AA0","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/3VA2340-4HL42-0AA0 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}}