{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1140-5EF32-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1140-5EF32-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1140-5EF32-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1140-5EF32-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1140-5EF32-0AA0, molded case circuit breaker, 3-pole, 40 A at 40 °C, line protection, TM240 overcurrent release, interrupting 187 kA at 240 V.","salesMarkdown":"## What this MCCB does on a line The interrupting rating is what decides its place in the panel: 187 kA at 240 V AC, 121 kA at 415 V, and still 75.6 kA at 440 V — numbers that put it in the high-fault-current class, typically for main or large subfeed breakers where available fault current is substantial. On the van, this is the breaker you grab when the existing MCCB can't clear a fault and the panel schedule calls for a 3-pole, 40 A frame with serious interrupting muscle. ## Ratings that drive the fit The 40 A continuous rating holds from 40 °C up to 50 °C, then begins a gentle taper: 39 A at 55–60 °C, 38 A at 65 °C, 37 A at 70 °C (–). That's a shallow derate curve — you don't lose much headroom in a warm enclosure. The interrupting ratings across voltages tell a clear story: at 240 V it's 187 kA, at 415 V it's 121 kA, at 440 V it's 75.6 kA, dropping to 17 kA at 500 V and 690 V (–). That steep drop above 440 V means this breaker is at home on 240/415/440 V distribution; for 690 V applications the available fault current needs to stay under 17 kA. Power loss is 10.8 W max, so heat dissipation in the panel is modest for a 40 A frame. Compare this to the 5SQ2370-2YA05 series: those are also MCCBs but with different interrupting characteristics and release options — the 3VA1140-5EF32-0AA0 is the current-production SENTRON line, so it's what you spec for new builds or replacements where the panel schedule matches these ratings. The 3VA1140-5EF32-0AA0 measures 130 mm high, 76.2 mm wide, and 70 mm deep — a 3-pole frame that fits standard distribution panel mounting. If the application needs remote tripping or ground-fault, you add external accessories from the 3VA family. No trip indicator and no voltage-trigger function — keep that in mind for troubleshooting; you'll need a clamp meter or a visual check of the handle position.","metaTitle":"Siemens 3VA1140-5EF32-0AA0 SENTRON MCCB, 40 A, 3-Pole, 187 k","metaDescription":"Siemens SENTRON 3VA1140-5EF32-0AA0 molded case circuit breaker, 40 A at 40 °C, 3-pole, interrupting 187 kA at 240 V. Line protection with TM240 release. Sourced to order against RF","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","Maximum":"0 A","Minimum":"0 A","at 240 V":"187 kA","at 415 V":"121 kA","at 440 V":"75.6 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","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":"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":"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","Product Function / Grounding Protection":"No","operating voltage / at AC / rated value":"690 V","operating voltage / at DC / rated value":"500 V","reference code / according to IEC 81346-2":"Q","Product Extension / Optional / Motor Drive":"Yes","Protection Function Of The Overcurrent Release":"LI","number of CO contacts / for auxiliary contacts":"0","Switching Capacity Class Of The Circuit Breaker":"M","Mechanical Service Life (Operating 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"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/db1013d220a43fe3d9c3f575944681fb.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=69561&mlfb=3VA1140-5EF32-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1140-5EF32-0AA0/alternatives.json"},"ai":{"faq":[{"question":"What is the interrupting rating of 3VA1140-5EF32-0AA0 at 240 V?","answer":"It interrupts 187 kA at 240 V AC, with ratings of 121 kA at 415 V, 75.6 kA at 440 V, and 17 kA at both 500 V and 690 V."},{"question":"Will 3VA1140-5EF32-0AA0 drop into a panel built around 5SQ2370-2YA05?","answer":"Not without checking — the 3VA series uses a different mounting interface and accessory system than the older 5SQ2370-2YA05 frame. Verify the physical footprint and interrupting requirements against the existing panel schedule before ordering."},{"question":"Where can I buy the 3VA1140-5EF32-0AA0?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm commitment."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1140-5EF32-0AA0","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/3VA1140-5EF32-0AA0 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}}