{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2040-8KP46-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2040-8KP46-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA2040-8KP46-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2040-8KP46-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2040-8KP46-0AA0, molded case circuit breaker, 4-pole, 40 A, ETU850 electronic trip unit, 440 kA interrupting at 240 V.","salesMarkdown":"The 3VA2040-8KP46-0AA0 is a Siemens SENTRON molded case circuit breaker (MCCB) rated for 40 A continuous at 40 °C, with no derating needed up to 70 °C — the full 40 A holds across the operating range. That makes it a straight drop-in for a 40 A feeder or branch circuit without recalculating ambient temperature margins. The interrupting ratings are the headline: 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. That lets the specifying engineer coordinate selectively with downstream breakers, which is the main reason to pick this over a cheaper thermal-magnetic MCCB. ## Panel integration — dimensions and mounting Dimensions are 86 mm depth, 140 mm width, 181 mm height. Power loss is 1.2 W maximum — negligible for panel thermal calculations.","metaTitle":"Siemens 3VA2040-8KP46-0AA0 SENTRON MCCB, 40 A, 4-Pole, 440 k","metaDescription":"Siemens SENTRON 3VA2040-8KP46-0AA0 molded case circuit breaker, 40 A continuous, 4-pole, 440 kA interrupting at 240 V. ETU850 electronic trip unit. Current production. Quoted to or","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","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","Trip Indicator":"No","Number Of Poles":"4","Product version":"Line protection","Voltage Trigger":"No","lifecycle_stage":"current","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":"1.2 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"Yes","Courant permanent assigné Iu":"40 A","Ground-Fault Monitoring Version":"Without","Tension assignée d'isolement Ui":"800 V","Design Of The Overcurrent Release":"ETU850","protection class IP / on the front":"IP40","reference code / acc. to IEC 81346-2":"Q","Product Extension / Optional / Motor Drive":"Yes","Adjustable response value current / li max.":"480 A","Adjustable response value current / li min.":"60 A","Neutral conductors / upgradeable/retrofittable":"No","Protection Function Of The Overcurrent Release":"LSI","number of CO contacts / for auxiliary contacts":"0","Switching Capacity Class Of The Circuit Breaker":"L","Max. rated operational current of the frame size":"100 A","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","Type of connectable conductor cross-section, round conductor terminal, stranded":"1 x (6-120 mm²)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/d5b55d558d7ec6382205544431ec7d79.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=188508&mlfb=3VA2040-8KP46-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2040-8KP46-0AA0/alternatives.json"},"ai":{"faq":[{"question":"What trip unit does this MCCB use?","answer":"It uses the ETU850 electronic trip unit, offering adjustable long-time, short-time, instantaneous, and ground-fault protection curves."},{"question":"What is the depth of this MCCB?","answer":"The depth is 86 mm (3.39 in)."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2040-8KP46-0AA0","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/3VA2040-8KP46-0AA0 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}}