{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2040-7KQ32-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2040-7KQ32-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA2040-7KQ32-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2040-7KQ32-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2040-7KQ32-0AA0, molded case circuit breaker, 3-pole, 40 A continuous rating, 330 kA interrupting capacity at 240 V, line protection design with communication and ground-fault monitoring.","salesMarkdown":"The Siemens 3VA2040-7KQ32-0AA0 is a SENTRON molded case circuit breaker (MCCB) rated for 40 A continuous current at 40 °C ambient, with a 3-pole configuration designed for line protection. Its interrupting capacity reaches 330 kA at 240 V, dropping to 242 kA at 415 V and 440 V, and 187 kA at 500 V — at 690 V it still holds 3 kA. That SCCR headroom means this breaker can stand up to a high-fault utility feed without cascading failure upstream, critical for maintaining selectivity in a distribution panel. The breaker measures 105 mm wide, 181 mm high, and 86 mm deep — a standard MCCB footprint that fits most DIN-rail or panel-mount enclosures without a custom gland plate. Verify the mounting cutout and bus-bar spacing against your existing panel layout before committing the BOM line. Operating temperature range is -25 °C to 70 °C; storage range is -40 °C to 80 °C. The 40 A rating holds flat across the entire 40 °C to 70 °C ambient span — no derating curve to calculate for a warm panel environment. Maximum power loss is 1.2 W, negligible for thermal budgeting.","metaTitle":"Siemens 3VA2040-7KQ32-0AA0 SENTRON MCCB, 40 A, 3-Pole, 330 k","metaDescription":"Siemens 3VA2040-7KQ32-0AA0 SENTRON molded case circuit breaker, 40 A continuous, 3-pole, 330 kA interrupting at 240 V. Active production, quoted on request.","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","Height":"181 mm","Maximum":"480 A","Minimum":"60 A","at 240 V":"330 kA","at 415 V":"242 kA","at 440 V":"242 kA","at 500 V":"187 kA","at 690 V":"3 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","Initial Value":"16 A","Trip Indicator":"No","Number Of Poles":"3","Voltage Trigger":"No","lifecycle_stage":"current","Full-Scale Value":"40 A","Product Brand Name":"SENTRON","Product Designation":"Molded case circuit breaker","Undervoltage Release":"No","Design Of The Product":"Line protection","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","Ground-Fault Monitoring Version":"Summation current formation L-conductor","Continuous Current / Rated Value":"40 A","Insulation Voltage / Rated Value":"800 V","Design Of The Overcurrent Release":"ETU860","protection class IP / on the front":"IP40","design of the N-conductor protection":"adjustable OFF; 40% to 160%","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":"100 A","Product Extension / Optional / Motor Drive":"Yes","Protection Function Of The Overcurrent Release":"LSIG","number of CO contacts / for auxiliary contacts":"0","Switching Capacity Class Of The Circuit Breaker":"C","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"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=12962&mlfb=3VA2040-7KQ32-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2040-7KQ32-0AA0/alternatives.json"},"ai":{"faq":[{"question":"Does this breaker have communication and ground-fault monitoring?","answer":"Yes, it includes a communication function and summation-current ground-fault monitoring, so it can report trip status and leakage current to a control system."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2040-7KQ32-0AA0","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/3VA2040-7KQ32-0AA0 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}}