{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1140-3EF32-0KC0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1140-3EF32-0KC0","canonicalUrl":"https://aoctrl.com/siemens/3VA1140-3EF32-0KC0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1140-3EF32-0KC0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1140-3EF32-0KC0, molded case circuit breaker, 3-pole, 40 A rated, line protection, breaking capacity 75.6 kA at 240 V, 52.5 kA at 415 V, 32 kA at 440 V.","salesMarkdown":"## Siemens 3VA1140-3EF32-0KC0 — SENTRON MCCB, 40 A, 3-Pole, Line Protection The Siemens 3VA1140-3EF32-0KC0 is a SENTRON molded case circuit breaker (MCCB) rated for 40 A continuous current across the 40 to 50 °C ambient range, with a 3-pole construction designed for line protection duty. Breaking capacity reaches 75.6 kA at 240 V, stepping down to 52.5 kA at 415 V, 32 kA at 440 V, and 11.9 kA at both 500 V and 690 V — a curve that tells you this breaker is sized for high-fault commercial and light industrial panels where the available fault current at the secondary of a 480 V transformer can exceed 50 kA. At 55 °C the continuous rating drops to 39 A; at 65 °C to 38 A; at 70 °C to 37 A. The 10.8 W maximum power loss is manageable but should be factored into the enclosure thermal budget if several breakers are ganged. ## Built-in Shunt Trip and Auxiliary Switches The auxiliary switches are rated for the control circuit voltage; wire them to a digital input module to confirm breaker position without relying on a panel indicator light.","metaTitle":"Siemens 3VA1140-3EF32-0KC0 SENTRON MCCB, 40A 3-Pole, 75.6kA","metaDescription":"Siemens SENTRON 3VA1140-3EF32-0KC0 molded case circuit breaker, 40A rated, 3-pole, line protection. Breaking capacity 75.6kA at 240V. Active 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","Maximum":"0 A","Minimum":"0 A","at 240 V":"75.6 kA","at 415 V":"52.5 kA","at 440 V":"32 kA","at 500 V":"11.9 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":"39 A","at 60 °C":"39 A","at 65 °C":"38 A","at 70 °C":"37 A","Depth [In]":"2.76 in","Width [In]":"3 in","Height [In]":"5.12 in","Trip Indicator":"No","Number Of Poles":"3","Voltage Trigger":"Yes","lifecycle_stage":"current","Product Brand Name":"SENTRON","Product Designation":"Molded case circuit breaker","Undervoltage Release":"No","Design Of The Product":"Line protection","Communication Function":"No","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","power loss [W] / maximum":"10.8 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","Of The Supplied Basic Switch":"3VA11403EF320AA0","Design Of The Auxiliary Switch":"2 auxiliary switches HQ","Design Of The Auxiliary Release":"shunt trip (STL)","Ground-Fault Monitoring Version":"Without","Insulation Voltage / Rated Value":"800 V","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","Of The Integrated Auxiliary Trip Unit":"3VA9688-0BL33","Product Function / Grounding Protection":"No","operating voltage / at AC / rated value":"690 V","operating voltage / at DC / rated value":"500 V","reference code / according to IEC 81346-2":"Q","Product Extension / Optional / Motor Drive":"Yes","Protection Function Of The Overcurrent Release":"LI","number of CO contacts / for auxiliary contacts":"2","Of The Integrated Auxiliary Switch/Alarm Switch":"3VA9988-0AA12","Switching Capacity Class Of The Circuit Breaker":"N","Mechanical Service Life (Operating Cycles) / Typical":"20 000","Type Of Electrical Connection / For Main Current Circuit":"nut keeper kit on both ends","Arrangement Of Electrical Connectors / For Main Current Circuit":"Front terminal"}},"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=37378&mlfb=3VA1140-3EF32-0KC0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1140-3EF32-0KC0/alternatives.json"},"ai":{"faq":[{"question":"How do I get current pricing and availability for 3VA1140-3EF32-0KC0?","answer":"Submit an RFQ through this listing. Pricing and factory lead time are confirmed at quote time through our independent distribution channel; we do not publish live stock or price figures online."},{"question":"Will 3VA1140-3EF32-0KC0 drop into a panel specified for 3VA1110-5EE32-0LC0 without rewiring?","answer":"Both are SENTRON 3-pole MCCBs with the same 130 mm height and 76.2 mm width, but the 3VA1140-3EF32-0KC0 is a 40 A line-protection breaker with a shunt trip, while the 3VA1110-5EE32-0LC0 is a different amp rating and accessory configuration. The physical footprint is compatible, but the wiring for the shunt trip and auxiliary switches must be verified against the panel schematic — the auxiliary switch design may differ."},{"question":"What compliance documentation does this brand provide for 3VA1140-3EF32-0KC0?","answer":"Siemens SENTRON MCCBs are typically supplied with CE, UL, and CSA certifications, plus RoHS and REACH declarations. Specific document copies are available on request with the RFQ."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1140-3EF32-0KC0","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/3VA1140-3EF32-0KC0 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}}