{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2340-0HM32-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2340-0HM32-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA2340-0HM32-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2340-0HM32-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2 series, molded case circuit breaker, order code 3VA2340-0HM32-0AA0, 3-pole, 400 A rated, ETU330 electronic overcurrent release, 440 kA interrupting capacity at 415 V.","salesMarkdown":"## What this 400 A MCCB does on the line It carries an ETU330 electronic trip unit — that's the brain that gives you adjustable long-time, short-time, and instantaneous pickup curves, plus ground-fault protection via summation current sensing on the L-conductor. ## Thermal derating — the real-world current you can actually run At 55 °C it drops to 385 A, at 60 °C to 370 A, at 65 °C to 355 A, and at 70 °C to 340 A. If you're packing this into a hot panel next to drives or transformers, you need to check the ambient at the breaker's location — not the room thermostat. That's about 9.76 by 5.43 by 4.33 inches. The front face carries an IP40 protection class — fine for a closed panel, but don't leave the door open in a washdown area. It's a straight line-protection MCCB with ground-fault monitoring built into the trip unit. The power loss at full rated current is 96 W, so factor that into your panel thermal budget.","metaTitle":"Siemens 3VA2340-0HM32-0AA0 SENTRON MCCB, 400 A, 3-Pole, ETU3","metaDescription":"Siemens 3VA2340-0HM32-0AA0 SENTRON molded case circuit breaker, 400 A rated, 3-pole, ETU330 electronic trip unit. 440 kA at 415 V. Current production. Available to order.","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","Maximum":"4 800 A","Minimum":"600 A","at 415 V":"440 kA","at 690 V":"187 kA","at 40 °C":"400 A","at 45 °C":"400 A","at 50 °C":"400 A","at 55 °C":"385 A","at 60 °C":"370 A","at 65 °C":"355 A","at 70 °C":"340 A","Depth [In]":"4.33 in","Width [In]":"5.43 in","Height [In]":"9.76 in","Initial Value":"80 A","Trip Indicator":"No","Number Of Poles":"3","Voltage Trigger":"No","lifecycle_stage":"current","Full-Scale Value":"400 A","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":"96 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","Ground-Fault Monitoring Version":"Summation current formation L-conductor","Continuous Current / Rated Value":"400 A","Insulation Voltage / Rated Value":"800 V","Design Of The Overcurrent Release":"ETU330","protection class IP / on the front":"IP40","Product Function / Grounding Protection":"Yes","operating voltage / at AC / rated value":"690 V","reference code / according to IEC 81346-2":"Q","Continuous Current / Rated Value / Maximum":"400 A","Product Extension / Optional / Motor Drive":"Yes","Protection Function Of The Overcurrent Release":"LIG","number of CO contacts / for auxiliary contacts":"0","Switching Capacity Class Of The Circuit Breaker":"E","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/c1b3b6c5f6d67465025ac41848ceb75e.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1417857&mlfb=3VA2340-0HM32-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2340-0HM32-0AA0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA2340-0HM32-0AA0?","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/3VA2340-0HM32-0AA0","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/3VA2340-0HM32-0AA0 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}}