{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2040-8KQ32-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2040-8KQ32-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA2040-8KQ32-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2040-8KQ32-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2040-8KQ32-0AA0, molded case circuit breaker, 3-pole, 40 A, line protection, ETU860 electronic trip unit, 440 kA at 240 V, 330 kA at 415 V.","salesMarkdown":"## MCCB for high-fault panel builds The Siemens SENTRON 3VA2040-8KQ32-0AA0 is a 3-pole molded case circuit breaker rated at 40 A continuous current (Iu) with an ETU860 electronic trip unit for line protection. Its interrupting capacity reaches 440 kA at 240 V and 330 kA at 415 V, which means it can safely clear faults up to those levels without upstream cascading — critical for high-available-fault-current switchboards where a standard MCCB would fail closed. The breaker carries an 800 V rated insulation voltage (Ui) and maintains its 40 A rating across the full ambient range from 40 °C to 70 °C — no derating needed for warm enclosures. The front face is IP40 rated, suitable for general indoor panel environments where tools or fingers are the primary intrusion risk. Communication function is built in, enabling integration with higher-level monitoring or energy-management systems without an external module. The breaker measures 105 mm wide by 181 mm high by 86 mm deep. The 3-pole width (105 mm) matches the common 3-pole MCCB slot in most distribution panels; verify the mounting hole pattern against your existing busbar or adapter kit before committing the BOM line.","metaTitle":"Siemens 3VA2040-8KQ32-0AA0 SENTRON MCCB, 40 A, 3-Pole, 440 k","metaDescription":"Siemens SENTRON 3VA2040-8KQ32-0AA0 molded case circuit breaker, 40 A rated, 3-pole, line protection, ETU860 release, 440 kA at 240 V. Active production. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"Depth":"86 mm","Width":"105 mm","title":"3VA2040-8KQ32-0AA0","Height":"181 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":"40 A","at 45 °C":"40 A","at 50 °C":"40 A","at 55 °C":"40 A","at 60 °C":"40 A","at 65 °C":"40 A","at 70 °C":"40 A","Depth [In]":"3.39 in","Width [In]":"4.13 in","Height [In]":"7.13 in","description":"circuit breaker 3VA2 IEC frame 100 breaking capacity class L Icu=150kA @ 415V 3-pole, line protection ETU860, LSIG, In=40A overload protection Ir=16A...40A short-circuit protection Isd=0.6..10x In, Ii=1.5..12x In N conductor protection optionally with external current transformer, up to 160% gr.-fault prot., can be sw. off Ig=0.4... 1 x In, tg=0.05-0.8s nut keeper kit","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":"Yes","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","power loss [W] / maximum":"1.2 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"Yes","Courant permanent assigné Iu":"40 A","Ground-Fault Monitoring Version":"Summation current formation L-conductor","Tension assignée d'isolement Ui":"800 V","Design Of The Overcurrent Release":"ETU860","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 / lg max.":"40 A","Adjustable response value current / lg min.":"16 A","Adjustable response value current / li max.":"480 A","Adjustable response value current / li min.":"60 A","Neutral conductors / upgradeable/retrofittable":"Yes","Protection Function Of The Overcurrent Release":"LSIG","number of CO contacts / for auxiliary contacts":"0","Switching Capacity Class Of The Circuit Breaker":"L","Max. rated operational current of the frame size":"100 A","Mechanical Service Life (Operating Cycles) / Typical":"25 000","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 , min.":"13 x 1 mm"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/99fcb076951d0de9020af47f86571b6a.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=390767&mlfb=3VA2040-8KQ32-0AA0"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2040-8KQ32-0AA0","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/3VA2040-8KQ32-0AA0 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}