{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2440-5MN32-0AJ0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2440-5MN32-0AJ0","canonicalUrl":"https://aoctrl.com/siemens/3VA2440-5MN32-0AJ0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2440-5MN32-0AJ0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2440-5MN32-0AJ0, molded case circuit breaker, 3-pole, motor protection version, 400 A rated continuous current, ETU350M electronic trip unit, 187 kA at 240 V, 121 kA at 415 V.","salesMarkdown":"That 400 A holds flat from 40 °C up to 50 °C; above that it derates to 384 A at 55 °C, 376 A at 60 °C, 368 A at 65 °C, and 360 A at 70 °C — so if this lands in a hot panel near a drive or transformer, the 50 °C threshold is the one to watch. Breaking capacity runs 187 kA at 240 V, drops to 121 kA at 415 V and 440 V, then 75.6 kA at 500 V, and 17 kA at 690 V. ## Motor protection build — what's inside and what's not This is the motor protection version, meaning the ETU350M trip unit includes phase failure detection and a trip indicator. Power loss maxes at 63.5 W — that's the heat the breaker dumps into the enclosure. In a multi-breaker lineup, that figure drives the ventilation or derating calc for the surrounding units. That 138 mm width for a 3-pole 400 A frame is standard for SENTRON 3VA — it fits the same mounting footprint as other breakers in the series, so swapping from a lower-rated unit doesn't require drilling new holes or reworking the bus bars. Keep it in a dry indoor panel. The storage low end matters if this sits in an unheated warehouse before installation.","metaTitle":"Siemens 3VA2440-5MN32-0AJ0 MCCB, 400A, 187kA at 240V","metaDescription":"Siemens SENTRON 3VA2440-5MN32-0AJ0 molded case circuit breaker, 400A rated, motor protection version with ETU350M trip unit. Breaking capacity 187kA at 240V. Current production. Qu","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"Depth":"110 mm","Width":"138 mm","title":"3VA2440-5MN32-0AJ0","Height":"248 mm","at 240 V":"187 kA","at 415 V":"121 kA","at 440 V":"121 kA","at 500 V":"75.6 kA","at 690 V":"17 kA","at 40 °C":"400 A","at 45 °C":"400 A","at 50 °C":"400 A","at 55 °C":"384 A","at 60 °C":"376 A","at 65 °C":"368 A","at 70 °C":"360 A","description":"circuit breaker 3VA2 IEC frame 630 breaking capacity class M Icu=55kA @ 415V 3-pole, motor protection ETU350M, LSI, In=400A overload protection Ir=160A...400A short-circuit protection Isd=3...15 x Ir, Ii=15 x In nut keeper kit 2 auxiliary switches HP 1 trip alarm switch HP","Trip indicator":"Yes","Number of poles":"3","Product version":"Motor protection","Voltage trigger":"No","lifecycle_stage":"current","Product brand name":"SENTRON","Product designation":"Molded case circuit breaker","Latching - endurance":"15 000","Undervoltage Release":"No","Communication Function":"No","Phase failure detection":"Yes","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","Power loss [W] / maximum":"63.5 W","Auxiliary contact version":"2 auxiliary switches + 1 trip alarm switch HP","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","Rated continuous current Iu":"400 A","Rated insulation voltage Ui":"800 V","Of The Supplied Basic Switch":"3VA2440-5MN32-0AA0","Design of the auxiliary release":"Without auxiliary release","Ground fault monitoring version":"Without","Design of the overcurrent release":"ETU350M","Protection class IP / on the front":"IP40","Operating power / at AC-3 / at 400 V":"160 W","Reference code / acc. to DIN EN 81346-2":"Q","Adjustable response value time / tr max.":"17","Adjustable response value time / tr min.":"4","Adjustable response value time / tsd max.":"0.03 s","Adjustable response value time / tsd min.":"0.03 s","Undervoltage Release With Leading Contact":"No","Product extension / optional / motor drive":"Yes","Adjustable response value current / Ir max.":"400 A","Adjustable response value current / li max.":"6 000 A","Adjustable response value current / li min.":"6 000 A","Adjustable response value current / lr min.":"160 A","Adjustable response value current / Isd max.":"6 000 A","Adjustable response value current / Isd min.":"1 200 A","Neutral conductors / upgradeable/retrofittable":"No","Number of CO contacts / for auxiliary contacts":"3","Protective function of the overcurrent release":"LSI","Of The Integrated Auxiliary Switch/Alarm Switch":"3VA9988-0AB11","Switching capacity class of the circuit breaker":"M","Max. rated operational current of the frame size":"630 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,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/0eb36652ce522f093395d6bd0dd27e34.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=569892&mlfb=3VA2440-5MN32-0AJ0"},"ai":{"faq":[{"question":"Does 3VA2440-5MN32-0AJ0 include phase failure detection?","answer":"Yes, the ETU350M trip unit includes phase failure detection as standard on this motor protection version."},{"question":"What compliance documentation does Siemens provide for 3VA2440-5MN32-0AJ0?","answer":"As a current-production SENTRON MCCB, it carries the standard Siemens declarations (CE, UKCA, RoHS, REACH) available through the Siemens Industry Online Support portal. Specific certification details (UL, IEC) are part of the product documentation package — request them with your RFQ."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2440-5MN32-0AJ0","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/3VA2440-5MN32-0AJ0 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}