{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1140-3EF36-0DA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1140-3EF36-0DA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1140-3EF36-0DA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1140-3EF36-0DA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA series molded case circuit breaker, type 3VA1140-3EF36-0DA0, 3-pole, 40 A rated at 40 °C, breaking capacity 75.6 kA at 240 V AC, with undervoltage release, TM240 thermal-magnetic overcurrent release, line protection design.","salesMarkdown":"The Siemens SENTRON 3VA1140-3EF36-0DA0 is a 3-pole molded case circuit breaker (MCCB) rated 40 A at 40 °C, with a TM240 thermal-magnetic overcurrent release. It carries a breaking capacity of 75.6 kA at 240 V AC, derating to 52.5 kA at 415 V and 11.9 kA at 690 V. This MCCB's interrupting rating is voltage-dependent: 75.6 kA at 240 V, 52.5 kA at 415 V, 32 kA at 440 V, and 11.9 kA at both 500 V and 690 V. Above that, derating is gradual: 39 A at 55 °C and 60 °C, 38 A at 65 °C, 37 A at 70 °C. In a hot mill environment near the rolls, the 70 °C ceiling means the breaker can sit inside a ventilated enclosure without forced cooling — it takes the radiant heat. ## Undervoltage release and auxiliary options No communication function, no ground-fault module, no trip indicator. The design is line protection, not motor protection; the TM240 thermal-magnetic release handles overload and short-circuit within the same package. Footprint: 76.2 mm wide (3 in), 130 mm tall (5.12 in), 70 mm deep (2.76 in). Max power loss at rated load is 13.3 W — modest heat rejection for a 40 A frame, but account for it in a sealed cabinet with other breakers.","metaTitle":"SENTRON 3VA1140-3EF36-0DA0 MCCB, 40A, 75.6kA at 240V","metaDescription":"Siemens SENTRON 3VA1140-3EF36-0DA0 molded case circuit breaker, 40A rated at 40°C, 75.6kA breaking 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":"75.6 kA","at 415 V":"52.5 kA","at 440 V":"32 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":"3VA11403EF360AA0","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":"N","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":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=78068&mlfb=3VA1140-3EF36-0DA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1140-3EF36-0DA0/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of 3VA1140-3EF36-0DA0 at 415 V?","answer":"52.5 kA at 415 V AC. The rating drops to 32 kA at 440 V and 11.9 kA at 500 V and 690 V."},{"question":"What does the TM240 release mean on this MCCB?","answer":"TM240 is a thermal-magnetic overcurrent release with a 40 A continuous rating at 40 °C. The thermal element handles overloads; the magnetic element clears short-circuits up to the breaker's interrupting rating."},{"question":"Does 3VA1140-3EF36-0DA0 include an undervoltage release?","answer":"Yes, it ships with an undervoltage release (UVR) as standard. No ground-fault monitoring, no trip indicator, and no communication module are included."},{"question":"Where can I buy 3VA1140-3EF36-0DA0 and how is it quoted?","answer":"Sourced to order against an RFQ through independent distribution channels. Availability and current pricing are confirmed at quote time — no stock count or price is published here."},{"question":"Will 3VA1140-3EF36-0DA0 drop into a panel specified around 5SQ2370-2YA05?","answer":"The 3VA series and the 5SQ series are different product families with different footprints and mounting patterns. A direct mechanical drop-in without rewiring is not assured. Verify the mounting hole pattern and busbar spacing against the existing panel layout before ordering."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1140-3EF36-0DA0","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/3VA1140-3EF36-0DA0 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}}