{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2340-6HM42-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2340-6HM42-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA2340-6HM42-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2340-6HM42-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2340-6HM42-0AA0, 4-pole molded case circuit breaker, 400 A continuous rating, ETU330 electronic trip unit, 242 kA interrupting at 240 V.","salesMarkdown":"The Siemens 3VA2340-6HM42-0AA0 is a SENTRON molded case circuit breaker rated 400 A continuous (Iu) at 40 °C through 50 °C, with a 4-pole configuration and an ETU330 electronic overcurrent release. That 400 A holds flat across the 40–50 °C band; above 50 °C it derates to 385 A at 55 °C, 370 A at 60 °C, 355 A at 65 °C, and 340 A at 70 °C — so if your enclosure runs hot, the continuous current you can actually carry drops, and the trip unit settings need to reflect that. The interrupting ratings are substantial: 242 kA at 240 V, 187 kA at 415 V and 440 V, 121 kA at 500 V, and 7.5 kA at 690 V. At typical 400 V-class distribution voltages, that 187 kA gives you headroom for high-fault installations without cascading upstream breakers. The ETU330 release is electronic, adjustable for long-time, short-time, instantaneous, and ground-fault protection — the N-conductor protection is configurable to OFF, 50%, or 100% of the phase current. The breaker measures 184 mm wide, 248 mm high, and 110 mm deep — a 4-pole frame that occupies roughly 7.24 × 9.76 inches of panel face. The ETU330 is front-accessible for adjustment without removing the cover. The ETU330's adjustable short-time delay (typically 0.1–0.5 s) allows zone-selective interlocking with downstream breakers, keeping the faulted branch isolated while the main stays closed.","metaTitle":"Siemens 3VA2340-6HM42-0AA0 SENTRON MCCB, 400 A, 4-Pole, ETU3","metaDescription":"Siemens SENTRON 3VA2340-6HM42-0AA0 molded case circuit breaker, 400 A continuous, 4-pole, ETU330 trip unit. 242 kA at 240 V, 187 kA at 415 V. Current production, available to order","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"Depth":"110 mm","Width":"184 mm","Height":"248 mm","at 240 V":"242 kA","at 415 V":"187 kA","at 440 V":"187 kA","at 500 V":"121 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","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":"Summation current formation L + N conductor","Design Of The Overcurrent Release":"ETU330","protection class IP / on the front":"IP40","design of the N-conductor protection":"adjustable OFF; 50%; 100%","operating voltage / at AC / rated value":"690 V","reference code / according to IEC 81346-2":"Q","Product Extension / Optional / Motor Drive":"Yes","Adjustable response value current / lg max.":"400 A","Adjustable response value current / lg min.":"80 A","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":"LIG","number of CO contacts / for auxiliary contacts":"0","Switching Capacity Class Of The Circuit Breaker":"H","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,"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=528662&mlfb=3VA2340-6HM42-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2340-6HM42-0AA0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA2340-6HM42-0AA0 and how do I get a price?","answer":"This part is sourced and quoted to order through independent distribution. Submit an RFQ for current availability and pricing — confirmed at quote time."},{"question":"What is the interrupting rating of this MCCB at 415 V?","answer":"187 kA at 415 V, which is the same rating as at 440 V. At 240 V it reaches 242 kA, at 500 V it drops to 121 kA, and at 690 V it is 7.5 kA."},{"question":"What trip unit does 3VA2340-6HM42-0AA0 use?","answer":"It uses the ETU330 electronic overcurrent release with adjustable long-time, short-time, instantaneous, and ground-fault protection. The N-conductor protection can be set to OFF, 50%, or 100% of phase current."},{"question":"What are the physical dimensions of this breaker?","answer":"184 mm wide, 248 mm high, and 110 mm deep. Front protection is IP40."},{"question":"What compliance documentation does Siemens provide for this MCCB?","answer":"As a current-production SENTRON MCCB, this part carries CE marking for the European market and is designed to meet IEC 60947-2. UL and CSA listings are standard for the 3VA2 series. RoHS and REACH declarations are available from Siemens documentation."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2340-6HM42-0AA0","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/3VA2340-6HM42-0AA0 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}}