{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1140-4EF32-0CH0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1140-4EF32-0CH0","canonicalUrl":"https://aoctrl.com/siemens/3VA1140-4EF32-0CH0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1140-4EF32-0CH0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1140-4EF32-0CH0, 3-pole molded case circuit breaker, 40 A rated continuous current Iu, 121 kA breaking capacity at 240 V, TM240 overcurrent release, undervoltage release, line protection version.","salesMarkdown":"## What this 40 A MCCB does on the line At 415 V the rating drops to 75.6 kA, and at 690 V to 11.9 kA, so the SCCR coordination study needs to check the actual line voltage before committing this breaker to a branch. The UVR coil drops the breaker when supply voltage falls below a threshold, which is useful for preventing automatic restart after a brownout on machinery that requires supervised restart. No communication function, no phase failure detection, and no ground fault monitoring are built in; those would need external modules or a different variant. Above that it derates: 38.4 A at 55 °C, 37.6 A at 60 °C, 36.8 A at 65 °C, and 36 A at 70 °C.","metaTitle":"Siemens 3VA1140-4EF32-0CH0 SENTRON MCCB, 40 A, 121 kA at 240","metaDescription":"Siemens 3VA1140-4EF32-0CH0 SENTRON molded case circuit breaker, 40 A rated, 121 kA breaking at 240 V. 3-pole line protection with undervoltage release. Current production. Quoted t","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":"121 kA","at 415 V":"75.6 kA","at 440 V":"52.5 kA","at 690 V":"11.9 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":"3VA9608-0BB24","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":"S","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=384309&mlfb=3VA1140-4EF32-0CH0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1140-4EF32-0CH0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1140-4EF32-0CH0?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm position."},{"question":"What is the breaking capacity of 3VA1140-4EF32-0CH0 at different voltages?","answer":"121 kA at 240 V, 75.6 kA at 415 V, 52.5 kA at 440 V, and 11.9 kA at 690 V. The interrupting rating decreases as voltage increases, which is typical for MCCBs."},{"question":"Does 3VA1140-4EF32-0CH0 include an undervoltage release?","answer":"Yes, it includes an undervoltage release (UVR) as the auxiliary release. The design of the overcurrent release is TM240."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1140-4EF32-0CH0","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/3VA1140-4EF32-0CH0 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}}