{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2440-5MN32-0KH0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2440-5MN32-0KH0","canonicalUrl":"https://aoctrl.com/siemens/3VA2440-5MN32-0KH0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2440-5MN32-0KH0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2440-5MN32-0KH0, molded case circuit breaker, 3-pole, 400 A, motor protection, ETU350M, 187 kA at 240 V, 121 kA at 415 V.","salesMarkdown":"The Siemens SENTRON 3VA2440-5MN32-0KH0 is a 3-pole molded case circuit breaker (MCCB) rated for motor protection duty, carrying a continuous current Iu of 400 A through the full 40–50 °C range before derating begins at 55 °C. Its interrupting capacity hits 187 kA at 240 V and 121 kA at 415 V, which means it can clear high-fault currents on large motor feeders without cascading upstream — a practical spec for panel builders sizing the main breaker on a 400 V distribution board feeding multiple drives. ## Ratings & derating Power loss maxes at 63.5 W, so ventilation in a sealed enclosure matters at full load. Derating curve: 400 A flat from 40 °C to 50 °C, then 384 A at 55 °C, 376 A at 60 °C, 368 A at 65 °C, and 360 A at 70 °C. For a 400 A continuous load in a 55 °C panel ambient, you lose 16 A — plan the cable and bus accordingly. ## Dimensions & panel fit Footprint: 138 mm wide × 248 mm high × 110 mm deep. Latching endurance rated at 15,000 operations, which covers frequent switching in motor control centers.","metaTitle":"Siemens SENTRON 3VA2440-5MN32-0KH0 MCCB, 400 A, 187 kA","metaDescription":"Siemens SENTRON 3VA2440-5MN32-0KH0 molded case circuit breaker, 400 A rated, 187 kA at 240 V, motor protection, current production, sourced to order.","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","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","Trip indicator":"Yes","Number of poles":"3","Product version":"Motor protection","Voltage trigger":"Yes","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 HQ","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":"Shunt trip (STL)","Ground fault monitoring version":"Without","Of The Integrated Auxiliary Trip":"3VA9688-0BL33","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":"3VA9988-0AB12","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,"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=569915&mlfb=3VA2440-5MN32-0KH0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2440-5MN32-0KH0/alternatives.json"},"ai":{"faq":[{"question":"What are the key interrupting ratings for 3VA2440-5MN32-0KH0?","answer":"The breaker is rated 187 kA at 240 V, 121 kA at both 415 V and 440 V, 75.6 kA at 500 V, and 17 kA at 690 V. These cover most low-voltage industrial distribution applications up to 690 V."},{"question":"What is the continuous current rating and derating for this MCCB?","answer":"Rated continuous current Iu is 400 A. The breaker carries full 400 A from 40 °C to 50 °C, then derates to 384 A at 55 °C, 376 A at 60 °C, 368 A at 65 °C, and 360 A at 70 °C."},{"question":"Where can I buy 3VA2440-5MN32-0KH0 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 — no stock count or price is published here."},{"question":"What compliance documentation is available for this breaker?","answer":"As a Siemens SENTRON product under current production, it carries the standard manufacturer declarations: CE marking for the European market, and the design complies with IEC 60947-2 for molded case circuit breakers. Specific RoHS, REACH, or UL documentation is available from the manufacturer upon request."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2440-5MN32-0KH0","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/3VA2440-5MN32-0KH0 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}}