{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2340-5HL42-0DA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2340-5HL42-0DA0","canonicalUrl":"https://aoctrl.com/siemens/3VA2340-5HL42-0DA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2340-5HL42-0DA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2340-5HL42-0DA0, molded case circuit breaker, 4-pole, 400 A continuous, breaking capacity 187 kA at 240 V, with undervoltage release.","salesMarkdown":"## What this 400 A MCCB delivers The Siemens SENTRON 3VA2340-5HL42-0DA0 is a 4-pole molded case circuit breaker rated for 400 A continuous current at 40 °C, with no derating needed up to 50 °C — at 55 °C it still carries 385 A, and at 70 °C it holds 340 A. Breaking capacity reaches 187 kA at 240 V, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 7.5 kA at 690 V, so it handles high-fault utility feeds and large motor branch circuits without cascading upstream. The breaker measures 248 mm high, 184 mm wide, and 110 mm deep — a standard footprint for this current class. It mounts via the SENTRON base plate or directly on a DIN rail adapter (not included). Maximum power loss is 98.5 W at rated current. In a sealed panel with multiple breakers, that heat needs to be factored into the enclosure's dissipation budget — especially if the breaker is continuously loaded near 400 A.","metaTitle":"Siemens 3VA2340-5HL42-0DA0 SENTRON MCCB, 400 A, 4-Pole, 187","metaDescription":"Siemens SENTRON 3VA2340-5HL42-0DA0 molded case circuit breaker, 400 A continuous, 4-pole, breaking capacity 187 kA at 240 V. Active production. 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","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":"Yes","Design Of The Product":"Line protection","Communication Function":"No","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","power loss [W] / maximum":"98.5 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":"Without","Design Of The Auxiliary Release":"undervoltage release (UVR)","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%","Of The Integrated Auxiliary Trip Unit":"3VA9608-0BB25","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":"0","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=65329&mlfb=3VA2340-5HL42-0DA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2340-5HL42-0DA0/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of this MCCB at 415 V?","answer":"At 415 V the breaking capacity is 121 kA, identical to the 440 V rating. At 500 V it drops to 75.6 kA, and at 690 V to 7.5 kA."},{"question":"Where can I buy 3VA2340-5HL42-0DA0?","answer":"This part is available to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"Does this breaker include an undervoltage release?","answer":"Yes, it is fitted with an undervoltage release (UVR) as standard, which trips the breaker when control voltage falls below the dropout threshold."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2340-5HL42-0DA0","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/3VA2340-5HL42-0DA0 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}}