{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1140-6EF32-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1140-6EF32-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1140-6EF32-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1140-6EF32-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1140-6EF32-0AA0, molded case circuit breaker, 3-pole, 40 A, TM240 thermal-magnetic release, 220 kA at 240 VAC, IP40 front.","salesMarkdown":"## What this MCCB does on the line It's a line-protection device, not a motor-protection piece — the TM240 curve is sized for feeder and distribution duty, not for starting inrush. At 240 VAC it interrupts 220 kA, at 415 VAC 154 kA, at 440 VAC 121 kA, and at 500 VAC or 690 VAC it still holds 17 kA. The short-circuit current rating across the low-voltage band means this breaker clears hard faults without cascading upstream — useful when you're coordinating a panel downstream of a transformer or a main switch. ## Thermal derating — the real ampacity Rated 40 A at 40 °C, 45 °C, and 50 °C — no derating needed in a standard 40 °C panel. At 55 °C it drops to 39 A, at 65 °C to 38 A, and at 70 °C to 37 A. If your enclosure runs hot (poor ventilation, solar load, stacked breakers), size the load at 37 A, not 40. The TM240 release's adjustable li max goes up to 400 A, but that's the magnetic short-circuit pickup, not the continuous rating — don't confuse the two. Width 76.2 mm (3 in), height 130 mm (5.12 in), depth 70 mm (2.76 in). The optional motor drive (Product Extension / Optional / Motor Drive = Yes) means you can add remote tripping or closing later without swapping the breaker.","metaTitle":"Siemens 3VA1140-6EF32-0AA0 SENTRON MCCB, 40 A, 3-Pole, 220 k","metaDescription":"Siemens 3VA1140-6EF32-0AA0 SENTRON molded case circuit breaker, 40 A, 3-pole, TM240 release. Rated 220 kA at 240 VAC, 154 kA at 415 VAC. Current lifecycle, sourced to order against","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"Depth":"70 mm","Width":"76.2 mm","Height":"130 mm","at 240 V":"220 kA","at 415 V":"154 kA","at 440 V":"121 kA","at 500 V":"17 kA","at 690 V":"17 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]":"3 in","Height [In]":"5.12 in","Number Of Poles":"3","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":"TM240","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","reference code / acc. to IEC 81346-2":"Q","Max. rated operational voltage Ue with DC":"500 V","Product Extension / Optional / Motor Drive":"Yes","Adjustable response value current / li max.":"400 A","Adjustable response value current / li min.":"200 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":"H","Max. rated operational current of the frame size":"160 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,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/bd45e3f3ce9fdfa15f91a72bc23b02b3.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=35811&mlfb=3VA1140-6EF32-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1140-6EF32-0AA0/alternatives.json"},"ai":{"faq":[{"question":"What are the interrupting ratings for this MCCB?","answer":"220 kA at 240 VAC, 154 kA at 415 VAC, 121 kA at 440 VAC, and 17 kA at both 500 VAC and 690 VAC. For DC applications the max rated operational voltage is 500 V."},{"question":"Where can I buy the 3VA1140-6EF32-0AA0?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"What's the difference between this and a 5SQ2370-2YA05?","answer":"The 5SQ2370-2YA05 is a different frame and release family. The 3VA1140-6EF32-0AA0 carries a TM240 release and the 3VA1 footprint; the 5SQ series uses a different mounting and accessory set. They are not drop-in substitutes without rewiring and coordination review."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1140-6EF32-0AA0","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/3VA1140-6EF32-0AA0 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}}