{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2440-8HL32-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2440-8HL32-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA2440-8HL32-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2440-8HL32-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2440-8HL32-0AA0, molded case circuit breaker, 3-pole, 400 A, ETU320 electronic trip unit, line protection, breaking capacity 440 kA at 240 V.","salesMarkdown":"## What this 400 A MCCB carries The Siemens SENTRON 3VA2440-8HL32-0AA0 is a 3-pole molded case circuit breaker rated for a continuous current Iu of 400 A across the full operating temperature range from 40 °C to 70 °C — no derating needed up to that ceiling. It's built for line protection duty, meaning it sits at the main feeder or large subfeed, not on a motor branch where you'd want a specific motor-protective curve. Breaking capacity is the headline: 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. That's a serious interrupting rating — it can clear a massive fault without venting or cascading upstream, which matters when you're coordinating a high-available-fault-current industrial service. ## ETU320 trip unit — what it controls The overcurrent release is an ETU320, an electronic trip unit. That gives you adjustable long-time, short-time, instantaneous, and ground-fault protection curves (though this specific variant ships without ground-fault monitoring). The electronic trip means better selectivity coordination downstream compared to a thermal-magnetic — you can set the I²t curves to ride through inrush without nuisance tripping. Maximum power loss is 63.5 W; that's the heat you need to vent from the enclosure, so factor it into your thermal calculation if you're packing multiple breakers in a small cabinet.","metaTitle":"Siemens 3VA2440-8HL32-0AA0 SENTRON MCCB, 400 A, 3-Pole, ETU3","metaDescription":"Siemens SENTRON 3VA2440-8HL32-0AA0 molded case circuit breaker, 400 A, 3-pole, ETU320 release. Breaking capacity 440 kA at 240 V. Current production. Quoted 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","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]":"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":"Without","Design Of The Overcurrent Release":"ETU320","protection class IP / on the front":"IP40","reference code / acc. to IEC 81346-2":"Q","Product Extension / Optional / Motor Drive":"Yes","Adjustable response value current / li max.":"4 400 A","Adjustable response value current / li min.":"600 A","Neutral conductors / upgradeable/retrofittable":"No","Protection Function Of The Overcurrent Release":"LI","number of CO contacts / for auxiliary contacts":"0","Switching Capacity Class Of The Circuit Breaker":"L","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=250206&mlfb=3VA2440-8HL32-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2440-8HL32-0AA0/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of this MCCB at 240 V?","answer":"440 kA at 240 V, with 330 kA at 415/440 V and 52.5 kA at 690 V."},{"question":"Does the 3VA2440-8HL32-0AA0 include ground-fault protection?","answer":"No, this variant ships without ground-fault monitoring. The ETU320 release supports it, but the 'Without' designation means you'd need a different order code for that function."},{"question":"Where can I buy the 3VA2440-8HL32-0AA0?","answer":"It's sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — no stock count or lead-time number is published here."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2440-8HL32-0AA0","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/3VA2440-8HL32-0AA0 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}}