{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2340-5HL42-0AE0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2340-5HL42-0AE0","canonicalUrl":"https://aoctrl.com/siemens/3VA2340-5HL42-0AE0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2340-5HL42-0AE0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON molded case circuit breaker, 3VA2340-5HL42-0AE0, 400 A continuous, 4-pole, line protection design, 110 x 184 x 248 mm.","salesMarkdown":"It ships with the basic switch variant 3VA2340-5HL42-0AA0 and includes 4 auxiliary switches (HQ type) factory-installed — no separate accessory order needed for basic status feedback. ## Interrupting capacity and thermal derating — the real selection numbers The interrupting ratings span from 187 kA at 240 V down to 7.5 kA at 690 V, with 121 kA at both 415 V and 440 V. For a 400 V panel feeding a motor control center, the 121 kA SCCR at 415 V gives substantial headroom above typical 50–65 kA available fault currents. The 690 V figure of 7.5 kA is the weak point — verify your system's bolted-fault calculation if the breaker sits on a 690 V bus. Thermal derating is flat at 400 A from 40 °C through 50 °C, then steps down: 385 A at 55 °C, 370 A at 60 °C, 355 A at 65 °C, and 340 A at 70 °C. Dimensions are 110 mm depth, 184 mm width, 248 mm height. The 184 mm width across 4 poles means it occupies roughly 46 mm per pole — standard for a 400 A frame MCCB. Mounting is via the rear panel or DIN-rail adapter (not included in this variant). The storage minimum of -40 °C matters for cold-weather warehousing or unheated site containers — the breaker can sit through a northern winter without damage. No trip indicator, voltage trigger, or communication function is present on this order code; it is a pure electromechanical thermal-magnetic or electronic-trip MCCB (the evidence does not specify trip type, but the line-protection designation and absence of communication point to a standard thermal-magnetic or basic electronic trip unit).","metaTitle":"Siemens SENTRON 3VA2340-5HL42-0AE0 MCCB, 400 A, 4-Pole","metaDescription":"Siemens SENTRON 3VA2340-5HL42-0AE0 molded case circuit breaker, 400 A continuous, 4-pole, line protection. SCCR 187 kA at 240 V. Active 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","Maximum":"4 000 A","Minimum":"600 A","at 240 V":"187 kA","at 415 V":"121 kA","at 440 V":"121 kA","at 500 V":"75.6 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","Trip Indicator":"No","Number Of Poles":"4","Voltage Trigger":"No","lifecycle_stage":"current","Product Brand Name":"SENTRON","Product Designation":"Molded case circuit breaker","Undervoltage Release":"No","Design Of The Product":"Line protection","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","Of The Supplied Basic Switch":"3VA2340-5HL42-0AA0","Design Of The Auxiliary Switch":"4 auxiliary switches HQ","Design Of The Auxiliary Release":"Without auxiliary release","Ground-Fault Monitoring Version":"Without","Continuous Current / Rated Value":"400 A","Insulation Voltage / Rated Value":"800 V","Design Of The Overcurrent Release":"ETU320","protection class IP / on the front":"IP40","design of the N-conductor protection":"adjustable OFF; 50%; 100%","Product Function / Grounding Protection":"No","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","Protection Function Of The Overcurrent Release":"LI","number of CO contacts / for auxiliary contacts":"4","Of The Integrated Auxiliary Switch/Alarm Switch":"3VA9988-0AA12","Switching Capacity Class Of The Circuit Breaker":"M","Mechanical Service Life (Operating 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"}},"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=340145&mlfb=3VA2340-5HL42-0AE0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2340-5HL42-0AE0/alternatives.json"},"ai":{"faq":[{"question":"Who supplies 3VA2340-5HL42-0AE0 and how is it quoted for volume purchases?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution channels. Availability and current pricing are confirmed at quote time — no stock count or price is listed here."},{"question":"What is the interrupting capacity of 3VA2340-5HL42-0AE0 at different voltages?","answer":"The interrupting ratings are 187 kA at 240 V, 121 kA at both 415 V and 440 V, 75.6 kA at 500 V, and 7.5 kA at 690 V."},{"question":"What are the physical dimensions of 3VA2340-5HL42-0AE0?","answer":"The dimensions are 110 mm depth, 184 mm width, and 248 mm height."},{"question":"Does 3VA2340-5HL42-0AE0 include auxiliary switches or a ground-fault module?","answer":"It ships with 4 factory-installed auxiliary switches (HQ type) but has no undervoltage release, no ground-fault monitoring, and no communication module."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2340-5HL42-0AE0","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/3VA2340-5HL42-0AE0 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}}