{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2340-5HL42-0AF0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2340-5HL42-0AF0","canonicalUrl":"https://aoctrl.com/siemens/3VA2340-5HL42-0AF0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2340-5HL42-0AF0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2340-5HL42-0AF0, molded case circuit breaker, 400 A, 4-pole, line protection, 187 kA at 240 V, ETU320 trip unit.","salesMarkdown":"The 3VA2340-5HL42-0AF0: Rated breaking capacity reaches 187 kA at 240 V, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 17 kA at 690 V. Thermal derating is published: full 400 A holds through 50 °C, then drops to 385 A at 55 °C, 370 A at 60 °C, 355 A at 65 °C, and 340 A at 70 °C. ## Physical fit and integration Built-in auxiliary contact configuration is 1 auxiliary switch + 1 trip alarm switch (HQ version). If you need those, they must be added externally or the variant changed. These are the subcomponents if you are repairing rather than replacing the whole breaker.","metaTitle":"Siemens 3VA2340-5HL42-0AF0 SENTRON MCCB, 400 A, 4-Pole, 187","metaDescription":"Siemens SENTRON 3VA2340-5HL42-0AF0 molded case circuit breaker, 400 A rated, 4-pole, line protection, 187 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":"187 kA","at 415 V":"121 kA","at 440 V":"121 kA","at 500 V":"75.6 kA","at 690 V":"17 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","Trip indicator":"Yes","Number of poles":"4","Product version":"Line protection","Voltage trigger":"No","lifecycle_stage":"current","Product brand name":"SENTRON","Product designation":"Molded case circuit breaker","Latching - endurance":"15 000","Undervoltage Release":"No","Communication Function":"No","Phase failure detection":"No","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","Power loss [W] / maximum":"96 W","Auxiliary contact version":"1 auxiliary switch + 1 trip alarm switch HQ","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","Of The Supplied Basic Switch":"3VA2340-5HL42-0AA0","Design of the auxiliary release":"Without auxiliary release","Ground fault monitoring version":"Without","Of The Integrated Auxiliary Trip":"3VA9608-0BB11","Design of the overcurrent release":"ETU320","Protection class IP / on the front":"IP40","Reference code / acc. to DIN EN 81346-2":"Q","Adjustable response value time / tr max.":"17","Adjustable response value time / tr min.":"0.5","Undervoltage Release With Leading Contact":"No","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.":"600 A","Adjustable response value current / lr min.":"160 A","Neutral conductors / upgradeable/retrofittable":"No","Number of CO contacts / for auxiliary contacts":"2","Protective function of the overcurrent release":"LI","Of The Integrated Auxiliary Switch/Alarm Switch":"3VA9988-0AB12","Switching capacity class of the circuit breaker":"M","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=63629&mlfb=3VA2340-5HL42-0AF0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2340-5HL42-0AF0/alternatives.json"},"ai":{"faq":[{"question":"Will 3VA2340-5HL42-0AF0 drop into a panel that was specified around 3VA1112-5EF32-0CA0 without rewiring?","answer":"No — the 3VA1112-5EF32-0CA0 is a smaller-frame 3VA1 series breaker with different dimensions and lower ratings. The 3VA2340-5HL42-0AF0 is a 4-pole 400 A frame; you will need to verify mounting footprint, busbar spacing, and cable lug clearance before swapping."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2340-5HL42-0AF0","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/3VA2340-5HL42-0AF0 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}}