{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1140-3EF32-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1140-3EF32-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1140-3EF32-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1140-3EF32-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1140-3EF32-0AA0, 3-pole molded case circuit breaker, 40 A rated current, TM240 thermal-magnetic release, 75.6 kA interrupting capacity at 240 V.","salesMarkdown":"## MCCB for line protection — 40 A, 3-pole, TM240 release It carries a continuous current rating of 40 A from 40 °C through 50 °C ambient, derating to 37 A at 70 °C — so the 40 A frame holds its full rating across typical panel ambient conditions without oversizing. The TM240 thermal-magnetic release provides fixed overload and short-circuit protection; no voltage trigger or undervoltage release is fitted on this variant. The 3-pole configuration suits three-phase line feeders. Interrupting capacity reaches 75.6 kA at 240 V, 52.5 kA at 415 V, and 32 kA at 440 V — this gives headroom for high-fault installations downstream of large transformers. Dimensions are 130 mm height, 76.2 mm width (3 in), and 70 mm depth (2.76 in) — fits standard SENTRON 3VA panel cutouts and busbar systems. Maximum power loss is 10.8 W, which should be factored into enclosure thermal calculations. For BOM freeze or panel builds requiring documented traceability, Siemens provides the standard SENTRON declaration pack (RoHS, REACH, CE, UL/CSA) on request. The part carries no communication module, ground-fault monitoring, or undervoltage release — it is a straight thermal-magnetic line protection device.","metaTitle":"Siemens 3VA1140-3EF32-0AA0 SENTRON MCCB, 40 A, 3-Pole, 75.6","metaDescription":"Siemens 3VA1140-3EF32-0AA0 SENTRON molded case circuit breaker, 40 A rated at 40 °C, 3-pole, 75.6 kA interrupting at 240 V. TM240 release. Active production. Quoted on request.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","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":"No","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","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","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":"0","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":"https://cdn.aoctrl.com/101c6f21ca29d750fdc2e0b9bbb7acb3.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=150193&mlfb=3VA1140-3EF32-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1140-3EF32-0AA0/alternatives.json"},"ai":{"faq":[{"question":"What is the interrupting capacity of this MCCB?","answer":"Interrupting capacity is 75.6 kA at 240 V, 52.5 kA at 415 V, 32 kA at 440 V, and 11.9 kA at 500 V and 690 V."},{"question":"What is the rated current and how does it derate with temperature?","answer":"Rated current is 40 A from 40 °C through 50 °C, derating to 39 A at 55-60 °C, 38 A at 65 °C, and 37 A at 70 °C."},{"question":"Where can I buy 3VA1140-3EF32-0AA0 and get current pricing?","answer":"This part is sourced to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time."},{"question":"What compliance documentation is available for this breaker?","answer":"Siemens provides standard SENTRON documentation including RoHS, REACH, CE marking, and UL/CSA declarations on request."},{"question":"What are the physical dimensions of this MCCB?","answer":"Height is 130 mm (5.12 in), width is 76.2 mm (3 in), and depth is 70 mm (2.76 in)."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1140-3EF32-0AA0","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/3VA1140-3EF32-0AA0 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}}