{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2040-6KQ32-0KA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2040-6KQ32-0KA0","canonicalUrl":"https://aoctrl.com/siemens/3VA2040-6KQ32-0KA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2040-6KQ32-0KA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2040-6KQ32-0KA0, molded case circuit breaker, 40 A, 3-pole, breaking capacity 242 kA at 240 V, 187 kA at 415 V, with shunt trip (STL) and communication function.","salesMarkdown":"## What this MCCB does for a 40 A feeder The Siemens SENTRON 3VA2040-6KQ32-0KA0 is a 3-pole molded case circuit breaker rated 40 A continuous at up to 70 °C ambient — no derating needed across the full temperature band from 40 °C to 70 °C, all at 40 A. That flat thermal curve simplifies panel design: one frame size covers the same load regardless of where it sits in the enclosure. Breaking capacity is the headline: 242 kA at 240 V, 187 kA at 415 V and 440 V, 121 kA at 500 V, and 3 kA at 690 V. The 3 kA at 690 V is a reminder this is a 600 V class frame — not for 690 V main feeders, but fine for 690 V motor circuits where the available fault current stays low. The adjustable thermal-magnetic trip range is 16 A to 64 A, with a factory-set full-scale of 40 A. ## Panel fit and communication A communication function is onboard, supporting integration with energy management or remote monitoring systems — useful for a panel that needs breaker status or load data on a bus. The supplied basic switch is 3VA20406KQ320AA0, confirming the internal mechanism. Maximum power loss is 2.2 W — negligible for enclosure thermal calculations. ## Ground-fault and auxiliary release details The shunt trip (STL) allows a remote pushbutton, PLC output, or safety relay to open the breaker. No trip indicator is fitted, so remote indication depends on the communication function or auxiliary contacts.","metaTitle":"Siemens 3VA2040-6KQ32-0KA0 SENTRON MCCB, 40 A, 3-Pole, 242 k","metaDescription":"Siemens SENTRON 3VA2040-6KQ32-0KA0 molded case circuit breaker, 40 A rated, 3-pole, 242 kA breaking capacity at 240 V. Active production. Available to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"Depth":"86 mm","Width":"105 mm","Height":"181 mm","Maximum":"64 A","Minimum":"16 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]":"4.13 in","Height [In]":"7.13 in","Initial Value":"16 A","Trip Indicator":"No","Number Of Poles":"3","Voltage Trigger":"Yes","lifecycle_stage":"current","Full-Scale Value":"40 A","Product Brand Name":"SENTRON","Product Designation":"Molded case circuit breaker","Undervoltage Release":"No","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","Of The Supplied Basic Switch":"3VA20406KQ320AA0","Design Of The Auxiliary Release":"shunt trip (STL)","Ground-Fault Monitoring Version":"Summation current formation L-conductor","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%","Of The Integrated Auxiliary Trip Unit":"3VA9688-0BL33","Product Function / Grounding Protection":"Yes","operating voltage / at AC / rated value":"690 V","reference code / according to IEC 81346-2":"Q","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":"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":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1428094&mlfb=3VA2040-6KQ32-0KA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2040-6KQ32-0KA0/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of 3VA2040-6KQ32-0KA0 at 415 V?","answer":"187 kA at 415 V. At 240 V it is 242 kA; at 440 V it is also 187 kA; at 500 V it drops to 121 kA; at 690 V it is 3 kA."},{"question":"Does 3VA2040-6KQ32-0KA0 have a shunt trip?","answer":"Yes, a shunt trip (STL) is integrated for remote tripping. There is no undervoltage release and no trip indicator."},{"question":"Where can I buy 3VA2040-6KQ32-0KA0 and what is the lead time?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — no stock count or lead-time number is published here."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2040-6KQ32-0KA0","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/3VA2040-6KQ32-0KA0 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}}