{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2140-7KQ46-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2140-7KQ46-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA2140-7KQ46-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2140-7KQ46-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2140-7KQ46-0AA0, molded case circuit breaker, 4-pole, 40 A continuous, 330 kA breaking at 240 V, line protection design with ground-fault monitoring.","salesMarkdown":"The 4-pole configuration handles three-phase plus neutral, common in IT or TN-S systems where the neutral needs overcurrent protection. This MCCB delivers 330 kA at 240 V, 242 kA at 415 V and 440 V, 187 kA at 500 V, and 3.7 kA at 690 V. For a 690 V line, the 3.7 kA rating still covers most motor branch circuits, but verify your available fault current before specifying. ## Thermal performance and ground-fault monitoring 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. Communication function is onboard, so it can report trip events and status to a PLC or BMS over the panel bus. Four poles mean the breaker occupies the full width of a 4-module DIN-rail space — plan your busbar takeoffs accordingly.","metaTitle":"Siemens 3VA2140-7KQ46-0AA0 SENTRON MCCB, 40 A, 4-Pole, 330 k","metaDescription":"Siemens SENTRON 3VA2140-7KQ46-0AA0 molded case circuit breaker, 40 A continuous, 4-pole, 330 kA at 240 V. Current lifecycle stage. Quoted 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":"3.7 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":"1.6 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":"C","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=90759&mlfb=3VA2140-7KQ46-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2140-7KQ46-0AA0/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of this MCCB at 240 V?","answer":"330 kA at 240 V, which covers virtually any low-voltage fault scenario in North American distribution."},{"question":"Does this breaker include ground-fault protection?","answer":"Yes, it has ground-fault monitoring via summation current formation on the L+N conductors, detecting leakage by comparing phase and neutral current vectors."},{"question":"Where can I buy 3VA2140-7KQ46-0AA0 and how is it quoted?","answer":"Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — no stock figures are published here."},{"question":"What are the physical dimensions of this breaker?","answer":"181 mm high, 140 mm wide, 86 mm deep — fits a standard DIN-rail panel with room for wiring gutters in a 200 mm deep enclosure."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2140-7KQ46-0AA0","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/3VA2140-7KQ46-0AA0 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}}