{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2040-8KP36-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2040-8KP36-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA2040-8KP36-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2040-8KP36-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA series, Molded case circuit breaker, 3VA2040-8KP36-0AA0, 3-pole, 40 A continuous, ETU850 electronic trip unit, line protection design, 440 kA breaking capacity at 240 V.","salesMarkdown":"The ETU850 release is the key differentiator here: it's a communicating electronic trip unit, so this breaker can report status and trip events over a network — useful for a plant floor where you want remote monitoring of breaker state without walking every panel. The line protection design means the trip curves are shaped for feeder and main breaker duty, not motor starting. ## Breaking capacity across voltage — what the numbers mean Breaking capacity drops as voltage rises: 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 typical for an MCCB — the arc extinguishes harder at higher voltages. For a 400 V distribution board (common in European industrial plants), the 330 kA figure gives substantial headroom above typical 50–65 kA available fault currents. At 690 V, the 52.5 kA still covers most heavy industrial installations. ## Panel integration The 1.2 W maximum power loss is negligible for panel thermal budgeting.","metaTitle":"SENTRON 3VA2040-8KP36-0AA0 Molded Case Circuit Breaker, 40 A","metaDescription":"Siemens SENTRON 3VA2040-8KP36-0AA0 molded case circuit breaker. 40 A continuous, 3-pole, ETU850 release, 440 kA at 240 V. Active production. Available 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":"86 mm","Width":"105 mm","Height":"181 mm","Maximum":"480 A","Minimum":"60 A","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","Trip Indicator":"No","Number Of Poles":"3","Voltage Trigger":"No","lifecycle_stage":"current","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":"Without","Continuous Current / Rated Value":"40 A","Insulation Voltage / Rated Value":"800 V","Design Of The Overcurrent Release":"ETU850","protection class IP / on the front":"IP40","design of the N-conductor protection":"adjustable OFF; 40% to 160%","Product Function / Grounding Protection":"No","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":"LSI","number of CO contacts / for auxiliary contacts":"0","Switching Capacity Class Of The Circuit Breaker":"L","Mechanical Service Life (Operating Cycles) / Typical":"25 000","Type Of Electrical Connection / For Main Current Circuit":"double-sided box terminal","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/7c2d6be91c6801c517e36c1fed510981.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=433685&mlfb=3VA2040-8KP36-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2040-8KP36-0AA0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA2040-8KP36-0AA0 and get a price?","answer":"This part is sourced and quoted to order against an RFQ through independent industrial distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time."},{"question":"What is the breaking capacity of 3VA2040-8KP36-0AA0 at 415 V?","answer":"The breaking capacity at 415 V is 330 kA. At 240 V it is 440 kA, and at 690 V it drops to 52.5 kA."},{"question":"What trip unit does this MCCB use?","answer":"It uses the ETU850 electronic trip unit, which supports communication functions for remote monitoring and adjustable protection curves."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2040-8KP36-0AA0","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/3VA2040-8KP36-0AA0 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}}