{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2040-7JQ42-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2040-7JQ42-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA2040-7JQ42-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2040-7JQ42-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2040-7JQ42-0AA0, molded case circuit breaker, 4-pole, 40 A continuous rating, 330 kA interrupting capacity at 240 V, line protection design.","salesMarkdown":"It carries a 330 kA interrupting capacity at 240 V — that figure drops to 242 kA at 415 V and 440 V, and to 187 kA at 500 V, so the available fault current at your service entrance determines which voltage column you read. At 690 V the rating falls to 3 kA, which means this breaker is not intended for 690 V line-side protection in high-fault installations. ## Thermal performance across the panel ambient range The 86 mm depth and 140 mm width fit standard Siemens SENTRON mounting footprints, so it swaps into existing 3VA panel layouts without re-drilling gland plates.","metaTitle":"Siemens 3VA2040-7JQ42-0AA0 SENTRON MCCB, 40 A, 4-Pole, 330 k","metaDescription":"Siemens SENTRON 3VA2040-7JQ42-0AA0 molded case circuit breaker, 40 A continuous, 4-pole, 330 kA interrupting at 240 V. Active production. Sourced 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":"140 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]":"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":"1.2 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","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":"ETU560","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":"https://cdn.aoctrl.com/1364a66609a8214763fbd9bb44a3e979.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=87834&mlfb=3VA2040-7JQ42-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2040-7JQ42-0AA0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA2040-7JQ42-0AA0 and how do I get a price?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Submit an RFQ for current availability and pricing — confirmed at quote time."},{"question":"What is 3VA2040-7JQ42-0AA0's listed depth on this component line?","answer":"The listed depth is 86 mm (3.39 in). Width is 140 mm (5.51 in), height is 181 mm (7.13 in)."},{"question":"Will 3VA2040-7JQ42-0AA0 drop into a panel specified around 3VA2063-8JQ42-0AA0 without rewiring?","answer":"Both belong to the same SENTRON 3VA family and share the same mounting footprint, so mechanical fit is the same. The 3VA2063-8JQ42-0AA0 is a higher-current variant (63 A frame), so the 40 A 3VA2040-7JQ42-0AA0 will physically install in the same panel cutout without rewiring, but verify the load and protection coordination — the breaker's continuous rating must match the downstream circuit."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2040-7JQ42-0AA0","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/3VA2040-7JQ42-0AA0 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}}