{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2340-5HL42-0JL0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2340-5HL42-0JL0","canonicalUrl":"https://aoctrl.com/siemens/3VA2340-5HL42-0JL0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2340-5HL42-0JL0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2340-5HL42-0JL0 molded case circuit breaker, 400 A, 4-pole, line protection, 187 kA at 240 V, ETU320 trip unit.","salesMarkdown":"## What this 400 A MCCB is built for It carries a rated insulation voltage of 800 V and delivers a short-circuit breaking capacity of 187 kA at 240 V, 121 kA at 415 V, and 75.6 kA at 500 V — numbers that tell you it's sized for high-fault main feeders, not branch circuits. Thermal derating matters when you pack this into a closed panel: it holds full 400 A up to 50 °C ambient, then steps down to 385 A at 55 °C and 340 A at 70 °C. That curve is the difference between a breaker that holds and one that nuisance-trips on a hot summer shift. The 3VA2340-5HL42-0JL0 measures 184 mm wide by 248 mm high by 110 mm deep — a four-pole frame that needs real estate on the DIN rail or mounting plate. At 96 W maximum power loss, plan for ventilation or forced cooling in a densely packed enclosure; that heat has to go somewhere.","metaTitle":"Siemens 3VA2340-5HL42-0JL0 SENTRON MCCB, 400 A, 4-Pole, Line","metaDescription":"Siemens 3VA2340-5HL42-0JL0 SENTRON molded case circuit breaker, 400 A rated continuous current, 4-pole, line protection, 187 kA at 240 V. Sourced to order against RFQ.","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":"Yes","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":"2 auxiliary switches + 1 trip alarm switch + 1 electrical 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":"Shunt trip (STL)","Ground fault monitoring version":"Without","Of The Integrated Auxiliary Trip":"3VA9688-0BL32","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":"4","Protective function of the overcurrent release":"LI","Of The Integrated Auxiliary Switch/Alarm Switch":"3VA9988-0AB22","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=170891&mlfb=3VA2340-5HL42-0JL0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2340-5HL42-0JL0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA2340-5HL42-0JL0 and how is it quoted?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution, with availability and current pricing confirmed at quote time."},{"question":"What are the key ratings for 3VA2340-5HL42-0JL0?","answer":"It's a 4-pole MCCB rated 400 A continuous current, 800 V insulation voltage, with breaking capacities of 187 kA at 240 V, 121 kA at 415 V, and 75.6 kA at 500 V."},{"question":"What is the thermal derating for this breaker?","answer":"It holds full 400 A up to 50 °C, then derates to 385 A at 55 °C, 370 A at 60 °C, 355 A at 65 °C, and 340 A at 70 °C."},{"question":"What auxiliary contacts does it include?","answer":"It comes with 2 auxiliary switches plus 1 trip alarm switch and 1 electrical alarm switch."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2340-5HL42-0JL0","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/3VA2340-5HL42-0JL0 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}}