{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2040-4HM32-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2040-4HM32-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA2040-4HM32-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2040-4HM32-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2040-4HM32-0AA0, molded case circuit breaker, 3-pole, 40 A continuous rating, 121 kA breaking capacity at 240 V AC, for line protection.","salesMarkdown":"Its interrupting capacity hits 121 kA at 240 V AC, 75.6 kA at 415/440 V, and 52.5 kA at 500 V — enough to handle high-fault utility feeds without cascading upstream. ## Sizing and selectivity Adjustable thermal-magnetic trip (16 A minimum setting) lets you fine-tune overload protection without swapping the breaker. Dimensions are 105 mm wide, 181 mm tall, 86 mm deep — standard MCCB footprint for a 3-pole 40 A frame, fits most panelboards and switchgear cutouts. Power loss is a low 2.2 W at rated load.","metaTitle":"Siemens 3VA2040-4HM32-0AA0 SENTRON MCCB, 40 A, 3-Pole, 121 k","metaDescription":"Siemens 3VA2040-4HM32-0AA0 SENTRON molded case circuit breaker, 40 A continuous, 3-pole, 121 kA breaking at 240 V. Current production. Sourced to order against RFQ.","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":"480 A","Minimum":"60 A","at 240 V":"121 kA","at 415 V":"75.6 kA","at 440 V":"75.6 kA","at 500 V":"52.5 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":"S","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/d6197f351b552b1fdc1aa631df921813.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=495405&mlfb=3VA2040-4HM32-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2040-4HM32-0AA0/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2040-4HM32-0AA0","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/3VA2040-4HM32-0AA0 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}}