{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1140-4EF46-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1140-4EF46-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1140-4EF46-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1140-4EF46-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1140-4EF46-0AA0, 4-pole molded case circuit breaker, 40 A rated current at 40 °C, interrupting capacity 121 kA at 240 V AC, TM240 thermal-magnetic release, line protection design.","salesMarkdown":"The Siemens SENTRON 3VA1140-4EF46-0AA0 is a 4-pole molded case circuit breaker (MCCB) rated for line protection, carrying a continuous current of 40 A at 40 °C and an interrupting capacity of 121 kA at 240 V AC. The TM240 thermal-magnetic release handles overloads and short circuits without an undervoltage release or communication module — a straightforward, non-communicating breaker for main feeder or distribution panels. The 40 A rating holds flat through 50 °C, then derates to 39 A at 55 °C and 37 A at 70 °C — so in a warm enclosure you lose only a few amps, not a trip rating step. Interrupting capacity drops from 121 kA at 240 V to 75.6 kA at 415 V and 52.5 kA at 440 V, then settles at 11.9 kA from 500 V up to 690 V. That tells you this breaker is sized for 240–480 V distribution where fault currents are high; at 690 V it still clears 11.9 kA, enough for most industrial service-entrance duty. This order code carries a current-production lifecycle status, so it is still in active manufacture. No successor or phase-out date is recorded. ## Physical fit The breaker measures 130 mm high, 101.6 mm wide, and 70 mm deep — a standard 4-pole MCCB footprint that mounts on a DIN rail or panel-mount adapter. No communication module or undervoltage release is fitted, so no extra wiring or addressing is needed for a basic feeder circuit.","metaTitle":"Siemens 3VA1140-4EF46-0AA0 SENTRON MCCB, 4-Pole, 40A, 121kA","metaDescription":"Siemens SENTRON 3VA1140-4EF46-0AA0 molded case circuit breaker, 4-pole, 40A rated at 40°C, interrupting capacity 121kA at 240V AC. Current production. Available 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":"101.6 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]":"4 in","Height [In]":"5.12 in","Trip Indicator":"No","Number Of Poles":"4","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","design of the N-conductor protection":"without","Product Function / Grounding Protection":"No","operating voltage / at AC / rated value":"690 V","operating voltage / at DC / rated value":"600 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":"box terminal on both sides","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/dd7864ac5586d7db4494f27a1d0fcc0a.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=229437&mlfb=3VA1140-4EF46-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1140-4EF46-0AA0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1140-4EF46-0AA0?","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 is the interrupting capacity of this breaker at 240 V?","answer":"The interrupting capacity is 121 kA at 240 V AC, dropping to 75.6 kA at 415 V and 52.5 kA at 440 V, then 11.9 kA at 500 V and 690 V."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1140-4EF46-0AA0","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/3VA1140-4EF46-0AA0 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}}