{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1140-4EF32-0AD0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1140-4EF32-0AD0","canonicalUrl":"https://aoctrl.com/siemens/3VA1140-4EF32-0AD0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1140-4EF32-0AD0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1140-4EF32-0AD0, molded case circuit breaker, 3-pole, 40 A rated current (40 °C), 121 kA interrupting capacity at 240 V AC, TM240 thermal-magnetic release, line protection design.","salesMarkdown":"## What this MCCB brings to a hot, dusty panel The Siemens 3VA1140-4EF32-0AD0 is a SENTRON molded case circuit breaker (MCCB) rated for 40 A continuous at 40 °C, with a thermal-magnetic TM240 release and 3 poles. It's built for line protection — the kind of duty where a breaker sits between a transformer secondary and a distribution bus, not cycling every shift but needing to clear a fault without hesitation when it happens. At 415 V it still holds 75.6 kA, and at 690 V it's rated 11.9 kA. The TM240 thermal-magnetic release means the thermal element tracks load heating for overload protection, and the magnetic instantaneous element handles short circuits. Rated current holds at 40 A from 40 °C through 50 °C, then drops to 39 A at 55 °C, 38 A at 65 °C, and 37 A at 70 °C. In a cement plant control room that hits 55 °C in summer, you still get 39 A continuous — enough for a 40 A feeder if you're not pushing the thermal limit.","metaTitle":"Siemens 3VA1140-4EF32-0AD0 SENTRON MCCB, 40A, 3-pole, 121kA","metaDescription":"Siemens SENTRON 3VA1140-4EF32-0AD0 molded case circuit breaker, 40A rated, 3-pole, 121kA interrupting at 240V. Active production. Quoted to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"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":"121 kA","at 415 V":"75.6 kA","at 440 V":"52.5 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]":"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","Of The Supplied Basic Switch":"3VA11404EF320AA0","Design Of The Auxiliary Switch":"3 auxiliary switches HQ","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":"3","Of The Integrated Auxiliary Switch/Alarm Switch":"3VA9988-0AA12","Switching Capacity Class Of The Circuit Breaker":"S","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":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=443695&mlfb=3VA1140-4EF32-0AD0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1140-4EF32-0AD0/alternatives.json"},"ai":{"faq":[{"question":"What are the key ratings for 3VA1140-4EF32-0AD0?","answer":"Rated 40 A continuous at 40 °C, 3-pole, interrupting capacity 121 kA at 240 V AC, 75.6 kA at 415 V, 52.5 kA at 440 V, and 11.9 kA at 500 V and 690 V. Insulation voltage rated 800 V. Thermal-magnetic TM240 release."},{"question":"Where can I buy 3VA1140-4EF32-0AD0 and get current pricing?","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":"Will 3VA1140-4EF32-0AD0 drop into a panel specified for 3VA1110-5ED36-0AC0?","answer":"Both are 3-pole SENTRON MCCBs in the same physical frame class (130 mm height, 76.2 mm width, 70 mm depth), so the footprint and mounting are identical. The difference is in the release and interrupting rating — verify the trip curve and available fault current match your application before swapping."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1140-4EF32-0AD0","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/3VA1140-4EF32-0AD0 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}}