{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1140-6EF32-0AH0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1140-6EF32-0AH0","canonicalUrl":"https://aoctrl.com/siemens/3VA1140-6EF32-0AH0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1140-6EF32-0AH0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1140-6EF32-0AH0, 3-pole molded case circuit breaker, line protection, 40 A rated continuous current Iu, TM240 thermal-magnetic release, 220 kA at 240 V interrupting capacity.","salesMarkdown":"Its interrupting capacity hits 220 kA at 240 V, 154 kA at 415 V, and 121 kA at 440 V — figures that place it in the high-fault category for industrial panelboards and distribution switchboards where SCCR headroom is a design constraint. The 40 A rating holds flat from 40 °C through 50 °C, then 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 means in a panel with ambient at 50 °C you can load the breaker to its full 40 A nameplate; above that you must account for the thermal curve. The 800 V rated insulation voltage Ui tells you the breaker is suitable for 480/277 V and 600 V systems with margin, but the 690 V interrupting capacity drops to 17 kA — so on a 690 V line you need to verify the available fault current stays under that. That gives you two form-C signals for status feedback and a dedicated alarm contact that changes state only on a trip event — useful for remote fault annunciation without wiring through the aux contacts. For a panel MCCB that sees infrequent switching (typically a handful of operations per year), this is more than adequate; it is not a contactor replacement for frequent motor starting. ## Panel integration The 76.2 mm width is a standard 3-pole MCCB footprint — three 25.4 mm pole centers — so it fits existing DIN-rail or panel-mount layouts without re-drilling.","metaTitle":"Siemens 3VA1140-6EF32-0AH0 SENTRON MCCB, 40 A, 220 kA at 240","metaDescription":"Siemens SENTRON 3VA1140-6EF32-0AH0 molded case circuit breaker, 3-pole, 40 A rated, TM240 release, 220 kA at 240 V. Current lifecycle status. 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","at 240 V":"220 kA","at 415 V":"154 kA","at 440 V":"121 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":"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":"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":"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":"3VA9988-0AB12","Switching capacity class of the circuit breaker":"H","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=511770&mlfb=3VA1140-6EF32-0AH0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1140-6EF32-0AH0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1140-6EF32-0AH0?","answer":"Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"What are the key interrupting ratings for 3VA1140-6EF32-0AH0?","answer":"220 kA at 240 V, 154 kA at 415 V, 121 kA at 440 V, and 17 kA at 690 V. The 690 V figure is the constraint — verify available fault current stays under 17 kA if used on a 690 V line."},{"question":"What is the continuous current rating and how does it derate with temperature?","answer":"40 A rated continuous current Iu, flat from 40 °C to 50 °C. 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."},{"question":"What auxiliary contacts does this breaker include?","answer":"2 auxiliary switches plus 1 trip alarm switch (HQ version). The trip alarm changes state only on a fault trip, not on manual switching."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1140-6EF32-0AH0","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/3VA1140-6EF32-0AH0 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}}