{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1140-3EF32-0KH0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1140-3EF32-0KH0","canonicalUrl":"https://aoctrl.com/siemens/3VA1140-3EF32-0KH0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1140-3EF32-0KH0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1140-3EF32-0KH0, 3-pole molded case circuit breaker, 40 A rated continuous current, 75.6 kA interrupting at 240 V, TM240 thermal-magnetic release, line protection version.","salesMarkdown":"At 240 V it interrupts 75.6 kA; at 415 V that drops to 52.5 kA, and at 440 V it's 32 kA — numbers that tell you this is a high-interrupting-capacity unit sized for main or feeder duty in a 400 V-class panel, not a branch device. The interrupting ratings are what decide whether it coordinates with the upstream transformer or generator breaker, so check your available fault current against the 415 V column if you're on a 400 V system. This is a straight line-protection MCCB: thermal-magnetic, no electronics, no fieldbus. If your BOM calls for a shunt trip for emergency-off, that's the STL release option on this unit. At 55 °C it's 38.4 A, at 60 °C it's 37.6 A, and it stair-steps down to 36 A at 70 °C. ## Footprint and panel fit The case measures 76.2 mm wide by 130 mm tall by 70 mm deep — a standard 3-pole MCCB footprint that drops into a SENTRON distribution panel or a generic DIN-rail adapter plate. The IP40 front protection means it's fine inside a closed enclosure; no washdown rating, so keep it out of wet areas. Latching endurance is rated at 15,000 operations — that's the mechanical life, not the electrical endurance under load.","metaTitle":"Siemens 3VA1140-3EF32-0KH0 SENTRON MCCB, 40 A, 75.6 kA at 24","metaDescription":"Siemens 3VA1140-3EF32-0KH0 SENTRON 3-pole MCCB, 40 A rated, 75.6 kA at 240 V interrupting capacity. Line protection with TM240 release. Current production stage. Sourced to order a","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":"Yes","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":"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":"Shunt trip (STL)","Ground fault monitoring version":"Without","Of The Integrated Auxiliary Trip":"3VA9688-0BL33","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=530903&mlfb=3VA1140-3EF32-0KH0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1140-3EF32-0KH0/alternatives.json"},"ai":{"faq":[{"question":"Will 3VA1140-3EF32-0KH0 drop into a panel specified around 3VA1110-5EE32-0JA0 without rewiring?","answer":"The 3VA1140-3EF32-0KH0 is a 3-pole MCCB with a 40 A TM240 release, while the 3VA1110-5EE32-0JA0 is a different rating and release variant. Both share the SENTRON 3VA family footprint, so the physical mounting and bus-bar spacing are the same, but the interrupting capacity and release settings differ — verify the coordination study before swapping."},{"question":"What is 3VA1140-3EF32-0KH0's listed depth?","answer":"The depth is 70 mm, with a width of 76.2 mm and a height of 130 mm."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1140-3EF32-0KH0","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/3VA1140-3EF32-0KH0 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}}