{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1140-3ED42-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1140-3ED42-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1140-3ED42-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1140-3ED42-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1140-3ED42-0AA0, 4-pole molded case circuit breaker, 40 A rated current, TM210 thermal-magnetic release, line protection version, breaking capacities up to 75.6 kA at 240 V AC.","salesMarkdown":"## What this 40 A MCCB does in the panel The Siemens 3VA1140-3ED42-0AA0 is a SENTRON 4-pole molded case circuit breaker rated 40 A continuous at 40 °C, with a TM210 thermal-magnetic release for line protection. Four poles let it switch three-phase plus neutral in a single unit, saving DIN rail space over separate breakers. ## Breaking capacity across voltages — where it fits This MCCB delivers 75.6 kA at 240 V, 52.5 kA at 415 V, 32 kA at 440 V, and 11.9 kA at both 500 V and 690 V. ## Thermal derating — what the 40 A means at panel ambient At 55 °C it derates to 39 A, at 65 °C to 38 A, and at 70 °C to 37 A. The 10.8 W maximum power loss is modest for a 4-pole 40 A breaker; it won't drive significant internal heating in a ventilated enclosure. The 101.6 mm width is 4 inches — standard for a 4-pole MCCB footprint on DIN rail or panel-mount.","metaTitle":"Siemens 3VA1140-3ED42-0AA0 SENTRON MCCB, 40 A, 4-Pole, 52.5","metaDescription":"Siemens 3VA1140-3ED42-0AA0 SENTRON molded case circuit breaker, 40 A rated, 4-pole, TM210 release, 52.5 kA breaking at 415 V AC. Current lifecycle. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"Depth":"70 mm","Width":"101.6 mm","Height":"130 mm","at 240 V":"75.6 kA","at 415 V":"52.5 kA","at 440 V":"32 kA","at 500 V":"11.9 kA","at 690 V":"11.9 kA","at 40 °C":"40 A","at 45 °C":"40 A","at 50 °C":"40 A","at 55 °C":"39 A","at 60 °C":"39 A","at 65 °C":"38 A","at 70 °C":"37 A","Depth [In]":"2.76 in","Width [In]":"4 in","Height [In]":"5.12 in","Trip Indicator":"No","Number Of Poles":"4","Product version":"Line protection","Voltage Trigger":"No","lifecycle_stage":"current","Product Brand Name":"SENTRON","Product Designation":"Molded case circuit breaker","Undervoltage Release":"No","Communication Function":"No","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","power loss [W] / maximum":"10.8 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","Ground-Fault Monitoring Version":"Without","Insulation Voltage / Rated Value":"800 V","Design Of The Overcurrent Release":"TM210","Design Of Short-Circuit Protection":"For switching power values in DC networks, see the 3VA molded case circuit breaker device manual; link to be found under Service & Support in the last chapter","protection class IP / on the front":"IP40","design of the N-conductor protection":"without","operating voltage / at AC / rated value":"690 V","Max. rated operational voltage Ue with DC":"600 V","reference code / according to IEC 81346-2":"Q","Product Extension / Optional / Motor Drive":"Yes","Neutral conductors / upgradeable/retrofittable":"No","Protection Function Of The Overcurrent Release":"LI","number of CO contacts / for auxiliary contacts":"0","Switching Capacity Class Of The Circuit Breaker":"N","Mechanical Service Life (Switching Cycles) / Typical":"20 000","Type Of Electrical Connection / For Main Current Circuit":"nut keeper kit on both ends","Arrangement Of Electrical Connectors / For Main Current Circuit":"Front terminal","Type of connectable conductor cross-section, connection screw, width x thickness , max.":"17 x 6,5 mm","Type of connectable conductor cross-section, connection screw, width x thickness , min.":"12 x 1 mm"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=227182&mlfb=3VA1140-3ED42-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1140-3ED42-0AA0/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of 3VA1140-3ED42-0AA0 at 415 V?","answer":"52.5 kA at 415 V AC. This is the key rating for European 400 V industrial panels — it handles high prospective fault currents from large transformers without requiring an upstream current-limiting fuse."},{"question":"What is the rated current of 3VA1140-3ED42-0AA0 and how does it derate with temperature?","answer":"40 A at 40 °C to 50 °C (–). It derates to 39 A at 55 °C and 60 °C, 38 A at 65 °C, and 37 A at 70 °C. If your panel ambient exceeds 50 °C, factor in the 1–3 A reduction to avoid nuisance tripping."},{"question":"Where can I buy 3VA1140-3ED42-0AA0 and how is it quoted?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — no stock count or price is published here. Submit an RFQ for a firm quote with lead time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1140-3ED42-0AA0","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/3VA1140-3ED42-0AA0 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}}