{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1140-4EF32-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1140-4EF32-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1140-4EF32-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1140-4EF32-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1140-4EF32-0AA0, molded case circuit breaker, 3-pole, TM240 release, 40 A rated current at 40 °C, 121 kA breaking capacity at 240 V AC.","salesMarkdown":"## Line protection MCCB for high-fault panels Its 40 A continuous rating holds across a 40 °C to 50 °C ambient without derating, dropping to 37 A at 70 °C. The interrupting capacity hits 121 kA at 240 V AC and 75.6 kA at 415 V AC, which puts this breaker into high-fault applications — main incoming or large subfeed where upstream transformer capacity is high. The 3-pole construction handles three-phase line protection, and the 70 mm depth keeps the can shallow enough for tight backpanel layouts. ## SCCR profile and selectivity headroom The SCCR curve drops from 121 kA at 240 V to 75.6 kA at 415 V, then 52.5 kA at 440 V, and 11.9 kA at both 500 V and 690 V. That 11.9 kA floor at higher voltages is the binding number if your system runs 480 V or 600 V class — coordination studies need that figure, not the 240 V headline. Width is 76.2 mm (3 in), height 130 mm (5.12 in), depth 70 mm (2.76 in). No undervoltage release or shunt trip on this variant — verify if your safety circuit needs one externally.","metaTitle":"Siemens 3VA1140-4EF32-0AA0 SENTRON MCCB 3-pole 40A 121kA","metaDescription":"Siemens SENTRON 3VA1140-4EF32-0AA0 molded case circuit breaker, 3-pole, 40A rated at 40°C, 121 kA SCCR at 240V, TM240 release. Active lifecycle. Quoted to order.","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":"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","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":"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":"$100.33","priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/0b25a690e0b3f776efe1607284ab8b22.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=255181&mlfb=3VA1140-4EF32-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1140-4EF32-0AA0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1140-4EF32-0AA0 and get a price?","answer":"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 commercial offer."},{"question":"What compliance documentation does Siemens provide for this MCCB?","answer":"As a SENTRON molded case circuit breaker, the 3VA1140-4EF32-0AA0 carries a rated insulation voltage of 800 V and front-face IP40 protection. Standard manufacturer documentation includes the device manual covering DC network applications; RoHS, REACH, UL, and IEC declarations are available through Siemens support channels referenced in the manual."},{"question":"What is the depth of 3VA1140-4EF32-0AA0?","answer":"70 mm (2.76 in), which is shallow enough for most standard-depth backpanel enclosures without interfering with gland plates or rear wireways."},{"question":"What is the width of 3VA1140-4EF32-0AA0?","answer":"76.2 mm (3 in), a standard 3-pole MCCB width that fits common DIN-rail mounting footprints."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1140-4EF32-0AA0","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/3VA1140-4EF32-0AA0 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}}