{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2340-7KP42-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2340-7KP42-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA2340-7KP42-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2340-7KP42-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2 series, Molded case circuit breaker, 3VA2340-7KP42-0AA0, 4-pole, 400 A rated continuous current, ETU850 electronic trip unit, line protection, 330 kA interrupting at 240 V.","salesMarkdown":"The Siemens 3VA2340-7KP42-0AA0 is a SENTRON molded case circuit breaker (MCCB) rated for 400 A continuous current at 40 °C, with a 4-pole configuration and an ETU850 electronic trip unit. This is the line-protection version — no ground-fault monitoring built in, so if you need GF protection you'd add an external module or look at the GF variant. The interrupting ratings are the headline here: 330 kA at 240 V, 242 kA at 415 V and 440 V, 187 kA at 500 V, and 7.5 kA at 690 V. 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. That's a linear-ish drop of about 5 A per degree above 50 °C. If your panel ambient runs at 55 °C — common in a sealed, sun-loaded enclosure — you lose 25 A of headroom. ## ETU850 trip unit — what it gives you The adjustable response time (tr) ranges from 0.5 s to 17 s, which gives you selectivity coordination flexibility downstream. The N-conductor protection is adjustable: OFF or 20 % to 100 % of the phase setting. That matters for 4-wire systems where you need to protect the neutral against harmonic currents. The 3VA2340-7KP42-0AA0 measures 248 mm high, 184 mm wide, and 110 mm deep. That's a 4-pole frame — wider than a 3-pole by roughly one pole pitch.","metaTitle":"Siemens 3VA2340-7KP42-0AA0 SENTRON MCCB, 400A, 4-Pole, ETU85","metaDescription":"Siemens 3VA2340-7KP42-0AA0 SENTRON molded case circuit breaker, 400A rated, 4-pole, ETU850 electronic trip unit. 330kA interrupting at 240V. Active production, sourced to order. Re","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":"330 kA","at 415 V":"242 kA","at 440 V":"242 kA","at 500 V":"187 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]":"4.3 in","Width [in]":"7.2 in","Height [in]":"9.8 in","Number of poles":"4","Product version":"Line protection","lifecycle_stage":"current","Product brand name":"SENTRON","Product designation":"Molded case circuit breaker","Latching - endurance":"20 000","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":"-40 °C","Other Measurement Function":"Yes","Rated continuous current Iu":"400 A","Rated insulation voltage Ui":"800 V","Ground fault monitoring version":"Without","Design of the overcurrent release":"ETU850","Protection class IP / on the front":"IP40","Design of the N-conductor protection":"adjustable OFF; 20% bis100%","Reference code / acc. to DIN EN 81346-2":"Q","Adjustable response value time / tr max.":"17","Adjustable response value time / tr min.":"0.5","Adjustable response value time / tsd max.":"0.5 s","Adjustable response value time / tsd min.":"0.05 s","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","Adjustable response value current / Isd max.":"4 000 A","Adjustable response value current / Isd min.":"240 A","Neutral conductors / upgradeable/retrofittable":"No","Number of CO contacts / for auxiliary contacts":"0","Protective function of the overcurrent release":"LSI","Switching capacity class of the circuit breaker":"C","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"}},"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=486494&mlfb=3VA2340-7KP42-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2340-7KP42-0AA0/alternatives.json"},"ai":{"faq":[{"question":"How do I get current pricing and availability for 3VA2340-7KP42-0AA0?","answer":"Submit an RFQ through this listing. Availability and current pricing are confirmed at quote time; the part is sourced to order through independent distribution."},{"question":"What is the interrupting capacity of 3VA2340-7KP42-0AA0 at different voltages?","answer":"At 240 V it interrupts 330 kA, at 415 V and 440 V it interrupts 242 kA, at 500 V it interrupts 187 kA, and at 690 V it interrupts 7.5 kA. That 7.5 kA at 690 V is the limiting case for high-voltage applications."},{"question":"What are the physical dimensions of 3VA2340-7KP42-0AA0?","answer":"Height is 248 mm, width is 184 mm, and depth is 110 mm. The 4-pole frame is wider than a 3-pole by roughly one pole pitch."},{"question":"What trip unit does 3VA2340-7KP42-0AA0 use?","answer":"It uses the ETU850 electronic trip unit, which includes communication capability and other measurement functions. The adjustable response time ranges from 0.5 s to 17 s, and the N-conductor protection is adjustable from OFF to 20 %–100 % of the phase setting."},{"question":"What is the rated continuous current of 3VA2340-7KP42-0AA0?","answer":"It is rated 400 A continuous at 40 °C, 45 °C, and 50 °C. Above 50 °C it derates: 375 A at 55 °C, 350 A at 60 °C, 325 A at 65 °C, and 300 A at 70 °C."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2340-7KP42-0AA0","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/3VA2340-7KP42-0AA0 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}}