{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1140-5EF32-0AD0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1140-5EF32-0AD0","canonicalUrl":"https://aoctrl.com/siemens/3VA1140-5EF32-0AD0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1140-5EF32-0AD0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1140-5EF32-0AD0, molded case circuit breaker, 3-pole, 40 A rated continuous current Iu, TM240 thermal-magnetic trip unit, 187 kA breaking capacity at 240 V, 70 mm depth, 76.2 mm width, 130 mm height.","salesMarkdown":"Its 40 A continuous current Iu holds flat from 40 °C through 50 °C, then derates to 36 A at 70 °C, so in a warm cement plant control room or a packed switchboard you still get the full 40 A unless ambient pushes past 50 °C. Breaking capacity is the headline: 187 kA at 240 V, 121 kA at 415 V, 75.6 kA at 440 V, and 17 kA at 690 V. IP40 on the front keeps dust out of the mechanism; the rest of the body is open to the enclosure, so mount it in a clean, dry panel. Dimensions are 70 mm deep, 76.2 mm wide, 130 mm tall — standard 3VA frame footprint that drops into a SENTRON distribution board or a DIN-rail adapter plate. At 55 °C it drops to 38.4 A, at 60 °C to 37.6 A, at 65 °C to 36.8 A, and at 70 °C to 36 A. That's a shallow curve: you lose only 4 A over a 20 °C rise above 50 °C. In a sealed enclosure with multiple breakers radiating heat, this MCCB won't nuisance-trip as long as the actual load stays under the derated value for the ambient. ## What it doesn't carry — and why that matters for specification No trip indicator, no voltage trigger, no undervoltage release, no communication function, no phase failure detection, no ground fault monitoring, and no other measurement function. This is a bare-bones line-protection MCCB: it trips on overcurrent and short circuit only. If your application needs remote tripping, ground-fault alarm, or power monitoring, you need a different 3VA variant with the appropriate accessory or electronic trip unit. The 3VA1140-5EF32-0AD0 is for straightforward feeder protection where the only requirement is clearing faults and carrying the load.","metaTitle":"Siemens 3VA1140-5EF32-0AD0 SENTRON MCCB, 40 A, 187 kA at 240","metaDescription":"Siemens 3VA1140-5EF32-0AD0 SENTRON molded case circuit breaker, 40 A rated current, 187 kA breaking capacity at 240 V. Current lifecycle stage. Available 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","at 240 V":"187 kA","at 415 V":"121 kA","at 440 V":"75.6 kA","at 690 V":"17 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":"M","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":"lug terminal","Arrangement of electrical connectors / for main current circuit":"Front terminal","Type of connectable conductor cross-section, connection screw, width x thickness , max.":"17 x 6.5","Type of connectable conductor cross-section, connection screw, width x thickness , min.":"12 x 0"}},"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=384367&mlfb=3VA1140-5EF32-0AD0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1140-5EF32-0AD0/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1140-5EF32-0AD0","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/3VA1140-5EF32-0AD0 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}}