{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2340-6KP42-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2340-6KP42-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA2340-6KP42-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2340-6KP42-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA, molded case circuit breaker, 4-pole, 400 A, ETU850 electronic overcurrent release, line protection design, IP40 front protection.","salesMarkdown":"That makes it a coordination-friendly breaker for selective tripping downstream of a main, not just a thermal-magnetic brute-force device. Breaking capacity is what gets an MCCB spec'd into a fault study. This unit delivers 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. That's a high-interrupting-capacity (HIC) class breaker, not an economy line. Thermal derating matters when you're packing breakers into a warm enclosure. The breaker holds 400 A up to 50 °C ambient; at 55 °C it derates to 375 A, at 60 °C to 350 A, at 65 °C to 325 A, and at 70 °C to 300 A. If your panel sits in a non-conditioned space — say, a Saudi switchroom hitting 55 °C — you're losing 25 A of headroom. Factor that into the load schedule. Mechanical footprint: 248 mm tall, 184 mm wide, 110 mm deep. ## Where it bolts in Terminal spread on a 4-pole frame means phase-to-phase clearance is built in — no need for additional phase barriers up to the rated voltage. The ETU850 trip unit supports communication — that's the 'Communication Function Yes' flag in the specs. That means it can talk to a higher-level energy management system or PLC via the 3VA communication module (ordered separately), giving you remote trip status, current metering, and alarm annunciation. If you're retrofitting an older panel that had a dumb thermal-magnetic breaker, this adds a data stream without rewiring the load side.","metaTitle":"Siemens SENTRON 3VA2340-6KP42-0AA0 400 A MCCB, 4-Pole, ETU85","metaDescription":"Siemens SENTRON 3VA2340-6KP42-0AA0 molded case circuit breaker. 400 A continuous, 4-pole, ETU850 electronic trip. Breaking capacity 242 kA at 240 V. Current production. Quoted to o","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","Maximum":"4 000 A","Minimum":"600 A","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":"375 A","at 60 °C":"350 A","at 65 °C":"325 A","at 70 °C":"300 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":"Yes","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":"Yes","Ground-Fault Monitoring Version":"Without","Continuous Current / Rated Value":"400 A","Insulation Voltage / Rated Value":"800 V","Design Of The Overcurrent Release":"ETU850","protection class IP / on the front":"IP40","design of the N-conductor protection":"adjustable OFF; 20% to 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":"LSI","number of CO contacts / for auxiliary contacts":"0","Switching Capacity Class Of The Circuit Breaker":"H","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=45597&mlfb=3VA2340-6KP42-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2340-6KP42-0AA0/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of the 3VA2340-6KP42-0AA0 at 415 V?","answer":"187 kA at 415 V. That's a high-interrupting-capacity (HIC) rating suitable for distribution panels with high available fault current. At 240 V it's 242 kA, at 500 V it's 121 kA, and at 690 V it's 7.5 kA."},{"question":"Where can I buy the 3VA2340-6KP42-0AA0 and how is it quoted?","answer":"Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time. Because this is a 400 A 4-pole frame with ETU850, lead time is quoted per order — it's not a shelf-stock item at most distributors."},{"question":"What does the ETU850 trip unit do?","answer":"The ETU850 is an electronic overcurrent release that gives you adjustable long-time, short-time, instantaneous, and ground-fault protection. It also supports communication (via an optional module) for remote trip status and current metering. That makes it suitable for selective coordination studies, not just basic overload protection."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2340-6KP42-0AA0","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/3VA2340-6KP42-0AA0 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}}