{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2040-7HN32-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2040-7HN32-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA2040-7HN32-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2040-7HN32-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2 molded case circuit breaker, 3VA2040-7HN32-0AA0, 40 A continuous, 3-pole, ETU350 electronic trip unit, 480 A frame, line protection design, IP40 front protection.","salesMarkdown":"The Siemens SENTRON 3VA2040-7HN32-0AA0 is a 3-pole molded case circuit breaker (MCCB) rated for 40 A continuous current across the full ambient range from 40 °C to 70 °C — no derating needed up to that ceiling. The 480 A frame means the internal components are sized for a 480 A maximum bus, so the breaker runs cool at 40 A and leaves headroom for future upsizing by swapping the trip unit. ## Breaking capacity — the number that decides fault clearance Rated breaking capacity hits 330 kA at 240 V, 242 kA at 415 V and 440 V, 187 kA at 500 V, and 3 kA at 690 V. Maximum power loss is 1.2 W — negligible for thermal budgeting inside a crowded cabinet. ## Trip unit and protection features The ETU350 electronic overcurrent release is a microprocessor-based trip unit with adjustable long-time pickup, short-time pickup, instantaneous pickup, and ground-fault protection (though this specific variant ships without ground-fault monitoring).","metaTitle":"Siemens SENTRON 3VA2040-7HN32-0AA0 MCCB, 40 A, 3-pole, ETU35","metaDescription":"Siemens SENTRON 3VA2040-7HN32-0AA0 molded case circuit breaker, 40 A continuous, 3-pole, ETU350 release, 480 A frame. Rated breaking capacity 330 kA at 240 V. Active production. Qu","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":"480 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 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","Trip Indicator":"No","Number Of Poles":"3","Voltage Trigger":"No","lifecycle_stage":"current","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":"1.2 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","Ground-Fault Monitoring Version":"Without","Continuous Current / Rated Value":"40 A","Insulation Voltage / Rated Value":"800 V","Design Of The Overcurrent Release":"ETU350","protection class IP / on the front":"IP40","Product Function / Grounding Protection":"No","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":"LSI","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":"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/9d3c8be4700dae2e62aa38d8cd686cec.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=464489&mlfb=3VA2040-7HN32-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2040-7HN32-0AA0/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of this MCCB at 415 V?","answer":"Rated breaking capacity at 415 V is 242 kA — sufficient for high-fault panels near large step-down transformers."},{"question":"Where can I buy 3VA2040-7HN32-0AA0 and how is it quoted?","answer":"This part is sourced through independent distribution and quoted to order against an RFQ. Availability and current pricing are confirmed at quote time."},{"question":"Does this breaker include ground-fault monitoring?","answer":"No, this variant ships without ground-fault monitoring — the ETU350 release supports it, but the 'Without' option means no internal ground-fault sensor."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2040-7HN32-0AA0","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/3VA2040-7HN32-0AA0 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}}