{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2040-7HN36-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2040-7HN36-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA2040-7HN36-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2040-7HN36-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2040-7HN36-0AA0, molded case circuit breaker, 3-pole, 40 A rated, ETU350 electronic trip unit, line protection design, breaking capacity 330 kA at 240 V.","salesMarkdown":"Breaking capacity runs 330 kA at 240 V, 242 kA at 415 V and 440 V, 187 kA at 500 V, and 3 kA at 690 V. The 3 kA at 690 V tells you this isn't the breaker for a 690 V motor feeder — that's a different frame size. The 86 mm depth means it clears most shallow enclosures, but check the door clearance if you're adding rotary handles or auxiliary contacts. ## What the ETU350 trip unit means for coordination The ETU350 is an electronic trip unit with LSI protection — long-time (overload), short-time (short-circuit with delay), and instantaneous. That short-time delay is the key feature for selective coordination: you can set a delay so a downstream fault clears first, and this breaker only trips if the fault persists. Fixed thermal-magnetic breakers can't do that.","metaTitle":"Siemens 3VA2040-7HN36-0AA0 SENTRON MCCB, 40A, 3-Pole, 330kA","metaDescription":"Siemens SENTRON 3VA2040-7HN36-0AA0 molded case circuit breaker, 40A rated, 3-pole, ETU350 trip unit, 330kA breaking at 240V. Active production, sourced to order. RFQ for volume pri","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":"double-sided box terminal","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/0041f09a011e72e90bef1d49403b3656.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=458895&mlfb=3VA2040-7HN36-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2040-7HN36-0AA0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy the 3VA2040-7HN36-0AA0 and get a price quote?","answer":"We source and quote this MCCB to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"Will the 3VA2040-7HN36-0AA0 drop into a panel designed for the 3VA2040-8HN42-0AA0?","answer":"Both are 3-pole 3VA frame breakers with the same 105 mm width, 181 mm height, and 86 mm depth, so the physical footprint is identical. The difference is in the trip unit and rating — the 8HN42 variant carries a higher amp rating. Check the load current before swapping; the panel wiring and bus bars must match the higher rating."},{"question":"What compliance documentation does Siemens provide for this MCCB?","answer":"Siemens SENTRON 3VA breakers are designed to IEC 60947-2 and UL 489 standards. RoHS and REACH declarations are standard with the product documentation. Specific certificates (UL, CSA, CE, EAC) are available per the variant's approval marking."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2040-7HN36-0AA0","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/3VA2040-7HN36-0AA0 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}}