{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1140-4EE36-0AF0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1140-4EE36-0AF0","canonicalUrl":"https://aoctrl.com/siemens/3VA1140-4EE36-0AF0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1140-4EE36-0AF0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1140-4EE36-0AF0, molded case circuit breaker, 3-pole, 40 A, breaking capacity 75.6 kA at 415 V, TM220 release, line protection design.","salesMarkdown":"The Siemens SENTRON 3VA1140-4EE36-0AF0 is a 3-pole molded case circuit breaker (MCCB) rated for 40 A continuous current at 40 °C ambient, with a TM220 thermal-magnetic trip unit designed for line protection. At 240 V the interrupting rating climbs to 121 kA, which covers most North American panelboard applications. ## Thermal derating and operating envelope The 40 A rating holds flat from 40 °C to 50 °C, then drops to 39 A at 55 °C and 37 A at 70 °C. That derating curve matters when the breaker is packed into a warm enclosure alongside other heat sources — the 70 °C figure is the operating maximum, not a storage limit. ## Physical integration and auxiliary switch configuration The breaker occupies 76.2 mm width, 130 mm height, and 70 mm depth — a 3-inch wide footprint that fits standard Siemens SENTRON panelboard cutouts and DIN-rail adapter plates. No undervoltage release or communication module is fitted from the factory. The interrupting rating varies significantly with system voltage: 121 kA at 240 V, 75.6 kA at 415 V, 52.5 kA at 440 V, and 11.9 kA at both 500 V and 690 V. The drop above 500 V is steep — this is not a 690 V-optimized breaker.","metaTitle":"Siemens SENTRON 3VA1140-4EE36-0AF0 MCCB, 40 A, 3-Pole, 75.6","metaDescription":"Siemens SENTRON 3VA1140-4EE36-0AF0 molded case circuit breaker, 40 A, 3-pole, 75.6 kA breaking capacity at 415 V. Current lifecycle. 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":"121 kA","at 415 V":"75.6 kA","at 440 V":"52.5 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":"Yes","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":"3VA11404EE360AA0","Design Of The Auxiliary Switch":"1 auxiliary switch + 1 trip alarm switch HQ","Ground-Fault Monitoring Version":"Without","Insulation Voltage / Rated Value":"800 V","Design Of The Overcurrent Release":"TM220","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":"3VA9988-0AB12","Switching Capacity Class Of The Circuit Breaker":"S","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=1027591&mlfb=3VA1140-4EE36-0AF0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1140-4EE36-0AF0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1140-4EE36-0AF0 and how do I get a price?","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 price and lead time."},{"question":"What is the breaking capacity of this MCCB at 415 V?","answer":"The breaking capacity is 75.6 kA at 415 V, which is the most common rating for European 400 V industrial systems."},{"question":"What is the continuous current rating at elevated ambient temperatures?","answer":"The breaker is rated 40 A from 40 °C to 50 °C, derating to 39 A at 55 °C and 37 A at 70 °C. The 70 °C figure is the maximum operating ambient."},{"question":"What compliance documentation does this brand provide for 3VA1140-4EE36-0AF0?","answer":"As a Siemens SENTRON product, this MCCB carries CE marking for the European market and is designed to meet IEC 60947-2. RoHS and REACH compliance documentation is available from Siemens upon request."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1140-4EE36-0AF0","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/3VA1140-4EE36-0AF0 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}}