{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2140-0HM42-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2140-0HM42-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA2140-0HM42-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2140-0HM42-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2140-0HM42-0AA0, molded case circuit breaker, 4-pole, 40 A continuous, ETU330 electronic trip unit, 800 V insulation, IP40 front.","salesMarkdown":"It carries a continuous rated current of 40 A across the full ambient range from 40 °C to 70 °C with no derating — per the datasheet, the 40 A rating holds at every temperature step from 40 °C through 70 °C, so you don't have to recalculate for a warm enclosure. The 4-pole configuration with adjustable N-conductor protection (OFF or 100%) suits three-phase plus neutral systems where you need to monitor or isolate the neutral conductor. ## Trip unit and protection functions The overcurrent release is an ETU330 electronic trip unit. The ground-fault monitoring uses summation current formation on L + N conductors, which detects leakage without a separate sensor. Power loss is 1.2 W maximum, negligible for panel thermal budgeting. The width of 140 mm is the standard 4-pole MCCB footprint for this SENTRON frame size — it occupies four 35 mm DIN-rail mounting spaces. Panel builders should verify the depth clearance for cable connections and any auxiliary accessory modules that clip onto the sides or front.","metaTitle":"Siemens 3VA2140-0HM42-0AA0 SENTRON MCCB, 40 A, 4-Pole, ETU33","metaDescription":"Siemens SENTRON 3VA2140-0HM42-0AA0 molded case circuit breaker, 40 A continuous, 4-pole, ETU330 release, 800 V insulation. Active production. Request quote.","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","title":"3VA2140-0HM42-0AA0","Height":"181 mm","Maximum":"480 A","Minimum":"60 A","at 415 V":"440 kA","at 690 V":"187 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","description":"circuit breaker 3VA2 IEC frame 160 breaking capacity class E Icu=200 kA @ 415 V 4-pole, line protection ETU330, LIG, In=40A overload protection Ir=16A... 40A short circuit protection Ii=1,5...12 x In neutral protection adjustable(OFF 100%) ground fault protection Ig=0,4... 1 x In, tg=0,1/0,3s busbar connection","Initial Value":"16 A","Trip Indicator":"No","Number Of Poles":"4","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":"1.2 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","Ground-Fault Monitoring Version":"Summation current formation L + N 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","design of the N-conductor protection":"adjustable OFF; 100%","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":"160 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":"E","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,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/cda978e31ec81fb539d5632cb59bd0b3.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1417780&mlfb=3VA2140-0HM42-0AA0"},"ai":{"faq":[{"question":"Where can I buy 3VA2140-0HM42-0AA0 and get a price?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time."},{"question":"What is the closest functional second-source for 3VA2140-0HM42-0AA0?","answer":"The evidence does not list a direct functional equivalent from another manufacturer. For a drop-in replacement, verify the mounting footprint, continuous current rating, and trip unit characteristics against the panel design."},{"question":"What compliance documentation does Siemens provide for 3VA2140-0HM42-0AA0?","answer":"The evidence does not list specific compliance documents (RoHS, REACH, UL, IEC) for this order code. Standard Siemens MCCB documentation typically includes a declaration of conformity and UL/CSA/CE markings — confirm with the supplier at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2140-0HM42-0AA0","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/3VA2140-0HM42-0AA0 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}