{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2140-8KQ46-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2140-8KQ46-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA2140-8KQ46-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2140-8KQ46-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON, molded case circuit breaker, 3VA2140-8KQ46-0AA0, 40 A, 4-pole, line protection, 440 kA at 240 V breaking capacity, communication function.","salesMarkdown":"It carries a full-scale value of 40 A and a minimum setting of 60 A, meaning the thermal-magnetic trip unit is adjustable down to 60% of the 40 A frame — useful for matching the breaker to a slightly smaller continuous load without swapping the frame. Breaking capacity is 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 — these are the maximum fault currents the breaker can safely interrupt at each voltage level, which matters for SCCR compliance in a panel. ## Built-in communication and ground-fault monitoring This MCCB includes a communication function onboard (: Yes), so it can talk to a higher-level control system — typically via PROFIBUS or PROFINET on the 3VA platform — for remote trip indication, load monitoring, and parameter readback. The ground-fault monitoring uses summation current formation on L+N conductors, meaning it measures the vector sum of phase and neutral currents to detect leakage to earth, without needing a separate core-balance CT. Dimensions are 86 mm deep, 140 mm wide, 181 mm tall (3.39 x 5.51 x 7.13 inches). Verify the panel cutout and busbar spacing match before committing the BOM line.","metaTitle":"Siemens 3VA2140-8KQ46-0AA0 SENTRON MCCB, 40 A, 4-Pole, 440 k","metaDescription":"Siemens 3VA2140-8KQ46-0AA0 SENTRON molded case circuit breaker, 40 A continuous, 4-pole, line protection with communication. Breaking capacity 440 kA at 240 V. Active production, o","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":"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]":"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":"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":"160 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":"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/cda978e31ec81fb539d5632cb59bd0b3.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=130279&mlfb=3VA2140-8KQ46-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2140-8KQ46-0AA0/alternatives.json"},"ai":{"faq":[{"question":"How do I get current pricing and availability for 3VA2140-8KQ46-0AA0?","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 is the breaking capacity of 3VA2140-8KQ46-0AA0 at different voltages?","answer":"Breaking capacity is 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. These values determine the maximum fault current the breaker can safely interrupt at each system voltage."},{"question":"What compliance documentation does this brand provide for 3VA2140-8KQ46-0AA0?","answer":"As a Siemens SENTRON product, this MCCB is designed to meet IEC/EN 60947-2 standards for molded case circuit breakers. Typical documentation includes a CE declaration of conformity, RoHS and REACH compliance statements, and UL/CSA certification files depending on the exact variant. Specific document packages are provided at order confirmation."},{"question":"Does 3VA2140-8KQ46-0AA0 include ground-fault protection?","answer":"Yes, it has ground-fault monitoring using summation current formation on the L+N conductors. This measures the vector sum of phase and neutral currents to detect leakage to earth without a separate core-balance CT."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2140-8KQ46-0AA0","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/3VA2140-8KQ46-0AA0 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}}