{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1140-3EF36-0AD0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1140-3EF36-0AD0","canonicalUrl":"https://aoctrl.com/siemens/3VA1140-3EF36-0AD0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1140-3EF36-0AD0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1140-3EF36-0AD0, molded case circuit breaker, 3-pole, 40 A, TM240 overcurrent release, 75.6 kA at 240 V, IP40 front, current-production.","salesMarkdown":"Its interrupting capacity hits 75.6 kA at 240 V and 52.5 kA at 415 V, so it handles high-fault utility feeds without cascading upstream. ## Current derating and thermal reality Above that, derating begins: 38.4 A at 55 °C, 37.6 A at 60 °C, 36.8 A at 65 °C, and 36 A at 70 °C. Rated insulation voltage is 800 V, and interrupting capacity at 690 V is still 10.5 kA — enough for 690 V industrial grids with moderate fault levels. Mechanical endurance is 15,000 cycles, typical for a distribution-grade MCCB. ## Integration and auxiliary contacts Three auxiliary switches (HQ type) are built in — enough for remote status feedback or interlocking without an add-on module. No trip indicator is fitted, so a remote indication relies on the auxiliary contacts.","metaTitle":"Siemens 3VA1140-3EF36-0AD0 SENTRON MCCB, 40 A, 3-pole, 75.6","metaDescription":"Siemens 3VA1140-3EF36-0AD0 SENTRON molded case circuit breaker, 40 A, 3-pole, 75.6 kA at 240 V. Current-production lifecycle. Quoted to order against an 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","at 240 V":"75.6 kA","at 415 V":"52.5 kA","at 440 V":"32 kA","at 690 V":"10.5 kA","at 40 °C":"40 A","at 45 °C":"40 A","at 50 °C":"40 A","at 55 °C":"38.4 A","at 60 °C":"37.6 A","at 65 °C":"36.8 A","at 70 °C":"36 A","Trip indicator":"No","Number of poles":"3","Product version":"Line protection","Voltage trigger":"No","lifecycle_stage":"current","Product brand name":"SENTRON","Product designation":"Molded case circuit breaker","Latching - endurance":"15 000","Undervoltage Release":"No","Communication Function":"No","Phase failure detection":"No","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","Auxiliary contact version":"3 auxiliary switches HQ","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","Rated continuous current Iu":"40 A","Rated insulation voltage Ui":"800 V","Design of the auxiliary release":"without auxiliaryrelease","Ground fault monitoring version":"Without","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","Reference code / acc. to DIN EN 81346-2":"Q","Adjustable response value time / tr max.":"1","Adjustable response value time / tr min.":"1","Max. rated operational voltage Ue with DC":"500 V","Undervoltage Release With Leading Contact":"No","Product extension / optional / motor drive":"Yes","Adjustable response value current / Ir max.":"40 A","Adjustable response value current / li max.":"400 A","Adjustable response value current / li min.":"200 A","Adjustable response value current / lr min.":"28 A","Neutral conductors / upgradeable/retrofittable":"No","Number of CO contacts / for auxiliary contacts":"3","Protective function of the overcurrent release":"LI","Of The Integrated Auxiliary Switch/Alarm Switch":"3VA9988-0AA12","Switching capacity class of the circuit breaker":"N","Max. rated operational current of the frame size":"160 A","Max. rated operational voltage Ue with AC 50/60Hz":"690 V","Type of electrical connection / for main current circuit":"box terminal","Arrangement of electrical connectors / for main current circuit":"Front terminal","Type of connectable conductor cross-section, round conductor terminal, stranded":"1 x (1.5 - 70 mm²)"}},"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=250981&mlfb=3VA1140-3EF36-0AD0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1140-3EF36-0AD0/alternatives.json"},"ai":{"faq":[{"question":"What is the interrupting capacity of this MCCB at 415 V?","answer":"52.5 kA at 415 V. At 240 V it is 75.6 kA, at 440 V it is 32 kA, and at 690 V it is 10.5 kA."},{"question":"Where can I buy 3VA1140-3EF36-0AD0 and how is it quoted?","answer":"It is sourced to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"Does this breaker include a trip indicator or ground-fault monitoring?","answer":"No. It has no trip indicator and no ground-fault monitoring. It is a straight line-protection MCCB with a TM240 thermal-magnetic release."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1140-3EF36-0AD0","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/3VA1140-3EF36-0AD0 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}}