{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2040-6HM32-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2040-6HM32-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA2040-6HM32-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2040-6HM32-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2040-6HM32-0AA0, molded case circuit breaker, 3-pole, 40 A, line protection, breaking capacity 242 kA at 240 V, 105 x 181 x 86 mm.","salesMarkdown":"## What this 40 A MCCB delivers — and what it doesn't The Siemens SENTRON 3VA2040-6HM32-0AA0 is a 3-pole molded case circuit breaker rated for a continuous current of 40 A across the full ambient temperature range from 40 °C to 70 °C — no derating needed up to that ceiling. That flat thermal curve simplifies panel design: you don't have to oversize the frame for a hot enclosure. The 242 kA breaking capacity at 240 V is the headline number, but the real-world figure for a 400 V distribution board is 187 kA at 415 V and 440 V, dropping to 121 kA at 500 V and 3 kA at 690 V. ## Physical fit — panel integration notes Allow additional clearance for the arc chute exhaust and outgoing cable bending radius. The rated short-circuit breaking capacity (Icu) is 242 kA at 240 V, 187 kA at 415 V and 440 V, 121 kA at 500 V, and 3 kA at 690 V. For a typical 400 V distribution panel, the 187 kA figure gives substantial headroom for high-fault locations like a main switchboard near a large transformer. The 3 kA at 690 V is low — this breaker is not suited for 690 V industrial grids with significant fault current.","metaTitle":"Siemens 3VA2040-6HM32-0AA0 SENTRON MCCB, 40 A, 3-Pole, 242 k","metaDescription":"Siemens SENTRON 3VA2040-6HM32-0AA0 molded case circuit breaker, 40 A, 3-pole, line protection. Breaking capacity 242 kA at 240 V. Active production. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"Depth":"86 mm","Width":"105 mm","Height":"181 mm","Maximum":"480 A","Minimum":"60 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":"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":"No","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":"No","Ground-Fault Monitoring Version":"Summation current formation L-conductor","Continuous Current / Rated Value":"40 A","Insulation Voltage / Rated Value":"800 V","Design Of The Overcurrent Release":"ETU330","protection class IP / on the front":"IP40","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":"LIG","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":"https://cdn.aoctrl.com/49b81ee84b68415eaf2b97883fb59635.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=387763&mlfb=3VA2040-6HM32-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2040-6HM32-0AA0/alternatives.json"},"ai":{"faq":[{"question":"What is 3VA2040-6HM32-0AA0's listed depth (86 mm) on this component line?","answer":"The body depth is 86 mm (3.39 in). That measurement excludes the handle throw and any arc-chute projection — allow additional clearance behind the panel door."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2040-6HM32-0AA0","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/3VA2040-6HM32-0AA0 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}}