{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2440-7HM32-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2440-7HM32-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA2440-7HM32-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2440-7HM32-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2440-7HM32-0AA0, molded case circuit breaker, 3-pole, 400 A, ETU330 electronic trip unit, 330 kA at 240 V AC, 690 V AC rated operating voltage.","salesMarkdown":"The 3VA2440-7HM32-0AA0 is a Siemens SENTRON 3-pole molded case circuit breaker rated for 400 A continuous current at 40 °C through 70 °C — no derating needed across that span, which simplifies panel layout when the breaker sits near other heat sources. The interrupting ratings climb to 330 kA at 240 V AC and hold at 242 kA at 415 V and 440 V AC; at 500 V AC it still clears 187 kA. The ETU330 electronic trip unit handles the overcurrent protection algorithm, and the line-protection product version means it is configured for feeder or main breaker duty rather than motor or generator protection. ## Panel integration and physical fit The breaker measures 138 mm wide, 248 mm high, and 110 mm deep — a standard 3-pole MCCB footprint for 400 A frame size.","metaTitle":"Siemens 3VA2440-7HM32-0AA0 SENTRON MCCB, 400 A, 3-Pole, ETU3","metaDescription":"Siemens 3VA2440-7HM32-0AA0 SENTRON molded case circuit breaker, 400 A continuous, 3-pole, ETU330 release, 330 kA at 240 V. Active production. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"Depth":"110 mm","Width":"138 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":"9 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]":"5.43 in","Height [In]":"9.76 in","Limited To 1 S":"5 kA","Trip Indicator":"No","Number Of Poles":"3","Product version":"Line protection","Voltage Trigger":"No","lifecycle_stage":"current","Product Brand Name":"SENTRON","Product Designation":"Molded case circuit breaker","Undervoltage Release":"No","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","rated insulation voltage Ui":"800 V","Courant permanent assigné Iu":"400 A","Ground-Fault Monitoring Version":"Summation current formation L-conductor","Design Of The Overcurrent Release":"ETU330","protection class IP / on the front":"IP40","operating voltage / at AC / rated value":"690 V","reference code / according to IEC 81346-2":"Q","Product Extension / Optional / Motor Drive":"Yes","Adjustable response value current / lg max.":"400 A","Adjustable response value current / lg min.":"80 A","Adjustable response value current / li max.":"4 800 A","Adjustable response value current / li min.":"600 A","Neutral conductors / upgradeable/retrofittable":"No","Protection Function Of The Overcurrent Release":"LIG","number of CO contacts / for auxiliary contacts":"0","Switching Capacity Class Of The Circuit Breaker":"C","Max. rated operational current of the frame size":"630 A","Mechanical Service Life (Switching 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","Type of connectable conductor cross-section, connection screw, width x thickness , max.":"35 x 10 mm","Type of connectable conductor cross-section, connection screw, width x thickness , min.":"20 x 1 mm"}},"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=25847&mlfb=3VA2440-7HM32-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2440-7HM32-0AA0/alternatives.json"},"ai":{"faq":[{"question":"What is the interrupting capacity of 3VA2440-7HM32-0AA0 at different voltages?","answer":"At 240 V AC it clears 330 kA; at 415 V and 440 V AC it clears 242 kA; at 500 V AC it clears 187 kA; at the rated operating voltage of 690 V AC it clears 9 kA. The 5 kA rating limited to 1 second applies to short-time withstand."},{"question":"Where can I buy 3VA2440-7HM32-0AA0?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2440-7HM32-0AA0","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/3VA2440-7HM32-0AA0 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}}