{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1040-2ED42-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1040-2ED42-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1040-2ED42-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1040-2ED42-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON, Molded case circuit breaker, 3VA1040-2ED42-0AA0, 4-pole, 40 A, TM210 thermal-magnetic release, 52.5 kA at 240 V.","salesMarkdown":"The Siemens SENTRON 3VA1040-2ED42-0AA0 is a 4-pole molded case circuit breaker rated 40 A continuous at 40 °C, with a TM210 thermal-magnetic release — meaning the thermal pickup is fixed, and the magnetic short-circuit trip is set at 10× In (400 A). It's a line-protection version, so it's built for feeder and distribution duty rather than motor-circuit protection. The interrupting ratings climb to 52.5 kA at 240 V and 32 kA at 415 V, which gives you real fault-clearing headroom in a 400 V distribution panel without worrying about cascading upstream. The 4-pole design lets you switch the neutral, which matters in TN-S or TT systems where you need full isolation. Power loss tops out at 10.8 W, so heat buildup in a crowded enclosure is manageable. ## Sizing and derating for real-world temps Above that it starts to taper: 39 A at 55 °C and 60 °C, 38 A at 65 °C, and 37 A at 70 °C. The TM210 release doesn't need an external adjustment, so what you see on the label is what you get for thermal protection. ## Where it fits — dimensions and mounting That's a 4-inch width on the DIN rail, matching the standard SENTRON 3VA footprint.","metaTitle":"Siemens 3VA1040-2ED42-0AA0 SENTRON MCCB 4P 40A TM210","metaDescription":"Siemens SENTRON 3VA1040-2ED42-0AA0 4-pole molded case circuit breaker, 40 A at 40 °C, TM210 release, 52.5 kA at 240 V. Active production. Sourced to order.","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","title":"3VA1040-2ED42-0AA0","Height":"130 mm","at 240 V":"52.5 kA","at 415 V":"32 kA","at 440 V":"13.6 kA","at 500 V":"7.5 kA","at 690 V":"7.5 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","description":"circuit breaker 3VA1 IEC frame 100 breaking capacity class B Icu=16kA @ 415V 4-pole, line protection TM210, FTFM, In=40A overload protection Ir=40A fixed short-circuit protection Ii=10 x In N conductor unprotected nut keeper kit","Number Of Poles":"4","Product version":"Line protection","lifecycle_stage":"current","Product Brand Name":"SENTRON","Product Designation":"Molded case circuit breaker","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","rated insulation voltage Ui":"800 V","Courant permanent assigné Iu":"40 A","Ground-Fault Monitoring Version":"Without","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","reference code / acc. to IEC 81346-2":"Q","Max. rated operational voltage Ue with DC":"600 V","Product Extension / Optional / Motor Drive":"No","Adjustable response value current / li max.":"400 A","Adjustable response value current / li min.":"400 A","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":"B","Max. rated operational current of the frame size":"100 A","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,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/08376a81236020eea39b48059186a69c.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=430833&mlfb=3VA1040-2ED42-0AA0"},"ai":{"faq":[{"question":"Where can I buy 3VA1040-2ED42-0AA0 and how do I get a price?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Submit a request and we'll confirm availability and current pricing at quote time."},{"question":"What is 3VA1040-2ED42-0AA0's interrupting capacity at 415 V?","answer":"At 415 V the breaker is rated for 32 kA interrupting capacity, which covers most industrial distribution panel fault levels."},{"question":"What does the TM210 release mean on this MCCB?","answer":"TM210 means a thermal-magnetic release with a fixed thermal rating at 40 A and a magnetic short-circuit trip set at 10× In (400 A). It's a line-protection device, not a motor-circuit protector."},{"question":"Will 3VA1040-2ED42-0AA0 drop into a panel specified around 3VA1010-2ED32-0AD0 without rewiring?","answer":"Both are SENTRON 3VA frame sizes with the same 4-inch width and DIN-rail mounting, so the physical fit is the same. The key difference is the rating — this one is 40 A with a TM210 release, while the 3VA1010-2ED32-0AD0 is a lower-current variant. Check your load and coordination study before swapping."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1040-2ED42-0AA0","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/3VA1040-2ED42-0AA0 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}}