{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2040-6KQ46-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2040-6KQ46-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA2040-6KQ46-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2040-6KQ46-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2040-6KQ46-0AA0, molded case circuit breaker, 4-pole, 40 A, 242 kA breaking capacity at 240 V, line protection design.","salesMarkdown":"At 415 V and 440 V it still holds 187 kA, dropping to 121 kA at 500 V and 3 kA at 690 V, so the voltage class of your supply determines the fault-clearing headroom you actually get. The 2.2 W maximum power loss is low enough that ventilation spacing in a standard enclosure is adequate — no forced cooling required for this breaker alone. A communication function is built in, so this unit can report status or trip events over a bus without an add-on module — useful for a maintenance team that wants to know which breaker opened before walking the panel. Dimensions are 181 mm height, 140 mm width, 86 mm depth — a standard 4-pole MCCB footprint that fits Siemens SENTRON mounting plates and most DIN-rail adapter kits. The breaker accepts a continuous current range from 60 A minimum to 480 A maximum via interchangeable trip units, but this specific variant is factory-set at 40 A. If your load draw is higher, you would select a different 3VA2 order code with the appropriate rating plug. Ground-fault monitoring uses summation current formation on L+N conductors, meaning it detects imbalance between phase and neutral — standard for solidly-grounded systems. No undervoltage release or voltage trip is fitted on this variant.","metaTitle":"Siemens 3VA2040-6KQ46-0AA0 SENTRON MCCB, 40 A, 4-Pole, 242 k","metaDescription":"Siemens SENTRON 3VA2040-6KQ46-0AA0 molded case circuit breaker, 40 A continuous, 4-pole, 242 kA at 240 V. Active 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":"86 mm","Width":"140 mm","Height":"181 mm","Maximum":"480 A","Minimum":"60 A","at 240 V":"242 kA","at 415 V":"187 kA","at 440 V":"187 kA","at 500 V":"121 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]":"5.51 in","Height [In]":"7.13 in","Initial Value":"16 A","Trip Indicator":"No","Number Of Poles":"4","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":"2.2 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"Yes","Ground-Fault Monitoring Version":"Summation current formation L + N 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":"H","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/fabdcb8b476fc7023dd5086da644756f.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=289411&mlfb=3VA2040-6KQ46-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2040-6KQ46-0AA0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA2040-6KQ46-0AA0 and get a price?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time."},{"question":"What are the key ratings for 3VA2040-6KQ46-0AA0?","answer":"40 A continuous current, 4-pole, 242 kA breaking capacity at 240 V (187 kA at 415 V/440 V, 121 kA at 500 V, 3 kA at 690 V), 800 V rated insulation voltage, 2.2 W max power loss."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2040-6KQ46-0AA0","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/3VA2040-6KQ46-0AA0 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}}