{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1140-3EF32-0DH0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1140-3EF32-0DH0","canonicalUrl":"https://aoctrl.com/siemens/3VA1140-3EF32-0DH0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1140-3EF32-0DH0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1 series, molded case circuit breaker, 3VA1140-3EF32-0DH0, 3-pole, 40 A rated, TM240 thermal-magnetic release, 75.6 kA breaking capacity at 240 V.","salesMarkdown":"The 3VA1140-3EF32-0DH0: Full 40 A rating holds through 50 °C; above that it derates to 38.4 A at 55 °C, 37.6 A at 60 °C, 36.8 A at 65 °C, and 36 A at 70 °C. That 70 °C ceiling matches the top of the derating curve — the breaker runs at 36 A in a hot enclosure, which is the real number to use for a panel sitting near a furnace line or in a South Asian summer. ## Integrated undervoltage release and auxiliary contacts Dimensions are 130 mm height, 76.2 mm width, 70 mm depth — a standard 3-pole MCCB footprint that drops into most SENTRON distribution panels and switchboard chassis without re-drilling. No voltage trigger, no communication function, no phase failure detection — this is a straight thermal-magnetic breaker for basic line protection, not a smart metering device.","metaTitle":"Siemens 3VA1140-3EF32-0DH0 SENTRON MCCB, 40 A, 3-Pole, TM240","metaDescription":"Siemens 3VA1140-3EF32-0DH0 SENTRON molded case circuit breaker, 40 A rated, 3-pole, TM240 release, 75.6 kA at 240 V. Current production. Quoted to order.","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":"Yes","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":"Yes","Communication Function":"No","Phase failure detection":"No","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","Auxiliary contact version":"2 auxiliary switches + 1 trip alarm switch 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":"Undervoltage release (UVR)","Ground fault monitoring version":"Without","Of The Integrated Auxiliary Trip":"3VA9608-0BB25","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":"3VA9988-0AB12","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":"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=165245&mlfb=3VA1140-3EF32-0DH0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1140-3EF32-0DH0/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of 3VA1140-3EF32-0DH0 at 415 V?","answer":"52.5 kA at 415 V, which covers most industrial low-voltage fault levels in European and Asian 400 V-class networks."},{"question":"Does 3VA1140-3EF32-0DH0 include an undervoltage release?","answer":"Yes, it ships with an undervoltage release (UVR) as the auxiliary release, plus 2 auxiliary switches and 1 trip alarm switch."},{"question":"Where can I buy 3VA1140-3EF32-0DH0?","answer":"Sourced and quoted to order against an RFQ through independent distribution; availability and current pricing confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1140-3EF32-0DH0","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/3VA1140-3EF32-0DH0 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}}