{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2440-8HK42-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2440-8HK42-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA2440-8HK42-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2440-8HK42-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON series, molded case circuit breaker (MCCB), order code 3VA2440-8HK42-0AA0, 400 A continuous, 4-pole, ETU340 release, interrupting capacity 440 kA at 240 V.","salesMarkdown":"## Siemens 3VA2440-8HK42-0AA0 — 400 A SENTRON MCCB with ETU340 release It carries a continuous current rating of 400 A across the full operating temperature range from -25 °C to 70 °C, with no derating needed up to 70 °C — that means it holds its full 400 A rating even in a warm enclosure. The interrupting capacity is substantial: 440 kA at 240 V, 330 kA at 415 V and 440 V, 220 kA at 500 V, and 52.5 kA at 690 V. For a 400 A frame, these numbers mean it can handle high-fault-current scenarios without cascading failure — typical for large transformer secondaries or motor control centers with high short-circuit capacity. The overcurrent release is an ETU340 electronic trip unit, configurable for the protection curve. The 184 mm width and 110 mm depth fit standard SENTRON 3VA panel cutouts. Four poles mean it can switch three-phase plus neutral in a single unit, simplifying wiring in 4-wire distribution systems. Power loss is rated at 63.5 W maximum — account for this heat in the enclosure thermal budget, especially when grouping multiple breakers in a confined panel.","metaTitle":"Siemens 3VA2440-8HK42-0AA0 SENTRON MCCB, 400 A, 4-Pole, ETU3","metaDescription":"Siemens SENTRON 3VA2440-8HK42-0AA0 molded case circuit breaker, 400 A continuous, 4-pole, ETU340 release. Interrupting capacity 440 kA at 240 V. Current lifecycle stage. Sourced to","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":"4 400 A","Minimum":"4 400 A","at 240 V":"440 kA","at 415 V":"330 kA","at 440 V":"330 kA","at 500 V":"220 kA","at 690 V":"52.5 kA","at 40 °C":"400 A","at 45 °C":"400 A","at 50 °C":"400 A","at 55 °C":"400 A","at 60 °C":"400 A","at 65 °C":"400 A","at 70 °C":"400 A","Depth [In]":"4.33 in","Width [In]":"7.24 in","Height [In]":"9.76 in","Limited To 1 S":"5 kA","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":"No","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","power loss [W] / maximum":"63.5 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","Ground-Fault Monitoring Version":"Without","Continuous Current / Rated Value":"400 A","Insulation Voltage / Rated Value":"800 V","Design Of The Overcurrent Release":"ETU340","protection class IP / on the front":"IP40","design of the N-conductor protection":"adjustable OFF; 50%; 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":"630 A","Product Extension / Optional / Motor Drive":"Yes","Protection Function Of The Overcurrent Release":"ELISA LI","number of CO contacts / for auxiliary contacts":"0","Switching Capacity Class Of The Circuit Breaker":"L","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/0eb36652ce522f093395d6bd0dd27e34.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=569922&mlfb=3VA2440-8HK42-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2440-8HK42-0AA0/alternatives.json"},"ai":{"faq":[{"question":"What is the depth of the 3VA2440-8HK42-0AA0?","answer":"The depth is 110 mm (4.33 inches)."},{"question":"What is the width of the 3VA2440-8HK42-0AA0?","answer":"The width is 184 mm (7.24 inches)."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2440-8HK42-0AA0","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/3VA2440-8HK42-0AA0 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}}