{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1140-3EF32-0JC0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1140-3EF32-0JC0","canonicalUrl":"https://aoctrl.com/siemens/3VA1140-3EF32-0JC0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1140-3EF32-0JC0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1140-3EF32-0JC0, 3-pole molded case circuit breaker, 40 A rated continuous current, TM240 thermal-magnetic release, 75.6 kA interrupting capacity at 240 V AC.","salesMarkdown":"## SENTRON 3VA1140-3EF32-0JC0 — 40 A MCCB with TM240 Release Interrupting capacity is 75.6 kA at 240 V, 52.5 kA at 415 V, 32 kA at 440 V, and 10.5 kA at 690 V. At 415 V, that 52.5 kA SCCR covers most industrial service-entrance and sub-feed applications without cascading upstream — the breaker clears a bolted fault before the upstream device sees it, provided the let-through energy is coordinated. Thermal derating is flat to 50 °C (40 A), then drops 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. In a sealed, non-ventilated enclosure the 55 °C threshold is the one to watch — a 40 A breaker in a 55 °C ambient is effectively a 38 A device. ## Integration — Panel Fit and Auxiliaries Footprint is 130 mm high, 76.2 mm wide, 70 mm deep — a standard 3-pole MCCB envelope that fits most DIN-rail or panel-mount backplates without re-drilling. The integrated auxiliary trip module is order code 3VA9688-0BL32, which is the factory-matched accessory for this frame. ## Operating Range and Endurance Mechanical endurance is 15,000 latching operations — adequate for a distribution breaker that sees infrequent switching; not rated for daily motor-start duty.","metaTitle":"Siemens 3VA1140-3EF32-0JC0 SENTRON MCCB, 40 A, 75.6 kA at 24","metaDescription":"Siemens SENTRON 3VA1140-3EF32-0JC0 molded case circuit breaker, 3-pole, 40 A, TM240 release, 75.6 kA interrupting 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":"No","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 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":"3VA9688-0BL32","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":"2","Protective function of the overcurrent release":"LI","Of The Integrated Auxiliary Switch/Alarm Switch":"3VA9988-0AA12","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=33663&mlfb=3VA1140-3EF32-0JC0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1140-3EF32-0JC0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1140-3EF32-0JC0 and how is it quoted?","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 volume or single-unit needs."},{"question":"What is the interrupting capacity of 3VA1140-3EF32-0JC0 at 415 V?","answer":"52.5 kA at 415 V AC, which covers most industrial service-entrance and sub-feed applications without requiring an upstream current-limiting fuse for coordination."},{"question":"Does 3VA1140-3EF32-0JC0 include a shunt trip or undervoltage release?","answer":"It includes a shunt trip (STL) release for remote tripping, but no undervoltage release. The integrated auxiliary trip module is order code 3VA9688-0BL32."},{"question":"What is the thermal derating for 3VA1140-3EF32-0JC0 above 50 °C?","answer":"Rated 40 A up to 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. In a sealed enclosure, size for the actual ambient."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1140-3EF32-0JC0","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/3VA1140-3EF32-0JC0 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}}