{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1140-3EF36-0AC0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1140-3EF36-0AC0","canonicalUrl":"https://aoctrl.com/siemens/3VA1140-3EF36-0AC0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1140-3EF36-0AC0","rawCanonicalId":null},"summary":{"shortDescription":"SENTRON 3VA1140-3EF36-0AC0, molded case circuit breaker, 3-pole, 40 A, TM240 thermal-magnetic release, 75.6 kA interrupting at 240 V, line protection design.","salesMarkdown":"## 40 A MCCB with TM240 release — line protection for distribution panels The SENTRON 3VA1140-3EF36-0AC0 is a 3-pole molded case circuit breaker rated 40 A continuous at 40 °C, built around a TM240 thermal-magnetic overcurrent release. That TM240 designation means the thermal pickup is fixed at 40 A (the frame rating), with magnetic instantaneous trip set at 240 A — 6× the continuous rating, typical for feeder or branch-circuit protection where moderate inrush from lighting or small motor loads is expected. Interrupting capacity reaches 75.6 kA at 240 V, 52.5 kA at 415 V, and 32 kA at 440 V — figures that place it in the high-interrupting tier of the 3VA family. At 500 V and 690 V it holds 11.9 kA, so it handles industrial 480Y/277 V and 600 V class panels without upstream fusing in most installations. ## Mounting and integration — DIN-rail footprint for panel builds The 3VA1140-3EF36-0AC0 measures 76.2 mm wide, 130 mm tall, and 70 mm deep — a standard 3-pole MCCB footprint that clips onto a DIN rail or mounts via the screw-on baseplate. Operating temperature range is -25 °C to 70 °C, with a derating curve above 55 °C: 39 A at 55–60 °C, 38 A at 65 °C, 37 A at 70 °C.","metaTitle":"SENTRON 3VA1140-3EF36-0AC0 MCCB, 40 A, 3-Pole, 75.6 kA at 24","metaDescription":"SENTRON 3VA1140-3EF36-0AC0 molded case circuit breaker, 40 A, 3-pole, 75.6 kA interrupting at 240 V. TM240 release, line protection. Sourced 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","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","Of The Supplied Basic Switch":"3VA11403EF360AA0","Design Of The Auxiliary Switch":"2 auxiliary switches HQ","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":"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":"box terminal on both sides","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=294336&mlfb=3VA1140-3EF36-0AC0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1140-3EF36-0AC0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1140-3EF36-0AC0 and what is the lead time?","answer":"This part is sourced through independent distribution channels and quoted to order against an RFQ. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm lead-time commitment."},{"question":"What is the interrupting capacity of 3VA1140-3EF36-0AC0 at different voltages?","answer":"75.6 kA at 240 V, 52.5 kA at 415 V, 32 kA at 440 V, and 11.9 kA at both 500 V and 690 V."},{"question":"What does the TM240 release mean on this breaker?","answer":"TM240 means the thermal-magnetic release has a fixed continuous rating of 40 A and a magnetic instantaneous trip set at 240 A — 6× the continuous rating, suited for feeder or branch-circuit protection with moderate inrush."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1140-3EF36-0AC0","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/3VA1140-3EF36-0AC0 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}}