{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1140-4EF32-0DA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1140-4EF32-0DA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1140-4EF32-0DA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1140-4EF32-0DA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1140-4EF32-0DA0, molded case circuit breaker (MCCB), 3-pole, 40 A rated current, line protection design with integrated undervoltage release (UVR), breaking capacity 121 kA at 240 V AC.","salesMarkdown":"That makes it a straight replacement for a fixed-trip MCCB in a distribution board or motor control center where coordination studies have already locked in the trip curve. The interrupting ratings span the common industrial voltages: 121 kA at 240 V AC, 75.6 kA at 415 V, 52.5 kA at 440 V, and 11.9 kA at both 500 V and 690 V. At 415 V — the standard three-phase distribution voltage in much of Europe and Asia — 75.6 kA gives you comfortable headroom above a typical 50 kA or 65 kA fault-current spec at the main switchboard. ## Thermal derating — the real-world current At 55 °C it drops to 39 A, at 65 °C to 38 A, and at 70 °C to 37 A. If this breaker sits next to a row of contactors or drives that push the enclosure internal temperature to 55 °C or higher, factor that 1–3 A reduction into your load calculation. Dimensions: 130 mm high, 76.2 mm wide (3 inches — standard MCCB footprint), 70 mm deep. The 3-pole width matches the common 3-inch mounting pattern for Siemens 3VA frame breakers, so it drops into an existing panel cutout or DIN-rail adapter without re-drilling.","metaTitle":"Siemens 3VA1140-4EF32-0DA0 SENTRON MCCB, 40 A, 3-Pole, 121 k","metaDescription":"Siemens SENTRON 3VA1140-4EF32-0DA0 molded case circuit breaker, 40 A, 3-pole, line protection with undervoltage release. Breaking capacity 121 kA at 240 V. Active production. Reque","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":"Yes","Design Of The Product":"Line protection","Communication Function":"No","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","power loss [W] / maximum":"13.3 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 Release":"undervoltage release (UVR)","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","Of The Integrated Auxiliary Trip Unit":"3VA9608-0BB25","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":"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=163611&mlfb=3VA1140-4EF32-0DA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1140-4EF32-0DA0/alternatives.json"},"ai":{"faq":[{"question":"How do I get pricing and availability for 3VA1140-4EF32-0DA0?","answer":"Submit an RFQ through this listing. The storefront sources against current Siemens distribution stock and pricing, confirmed at quote time."},{"question":"What is the closest functional alternative to 3VA1140-4EF32-0DA0?","answer":"The 3VA1110-5ED36-0AC0 is a functional peer within the same SENTRON 3VA family. The key difference is the overcurrent release: the 3VA1140-4EF32-0DA0 uses a fixed TM240 thermal-magnetic release at 40 A, while the 3VA1110-5ED36-0AC0 carries a different trip rating and release design. Verify the trip curve and amp rating against your coordination study before substituting."},{"question":"What is the depth of 3VA1140-4EF32-0DA0?","answer":"The depth is 70 mm (2.76 inches)."},{"question":"What is the width of 3VA1140-4EF32-0DA0?","answer":"The width is 76.2 mm (3 inches)."},{"question":"Will 3VA1140-4EF32-0DA0 fit in a panel designed for 3VA1110-5ED36-0AC0?","answer":"Both breakers share the same 3VA frame dimensions — 130 mm high, 76.2 mm wide, 70 mm deep — so the physical footprint is identical. No rewiring or panel modification is needed for the mounting cutout. However, verify that the trip rating and release type (TM240 vs the other breaker's release) match your circuit protection requirements."},{"question":"What compliance documentation is available for 3VA1140-4EF32-0DA0?","answer":"As a SENTRON MCCB, it carries the standard Siemens compliance package including CE marking for the European market and UL/CSA listings for North America. RoHS and REACH declarations are available from Siemens documentation. The 800 V rated insulation voltage supports IEC 60947-2 application."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1140-4EF32-0DA0","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/3VA1140-4EF32-0DA0 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}}