{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1140-3EF36-0DC0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1140-3EF36-0DC0","canonicalUrl":"https://aoctrl.com/siemens/3VA1140-3EF36-0DC0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1140-3EF36-0DC0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1140-3EF36-0DC0, molded case circuit breaker, 3-pole, 40 A rated at 40 °C, 75.6 kA interrupting at 240 V AC, line protection design with undervoltage release.","salesMarkdown":"The Siemens SENTRON 3VA1140-3EF36-0DC0 is a 3-pole molded case circuit breaker (MCCB) rated for line protection, carrying a continuous 40 A at 40 °C with a 75.6 kA interrupting capacity at 240 V AC. That breaking capacity drops to 52.5 kA at 415 V, 32 kA at 440 V, and 11.9 kA at 500 V and 690 V — so the available fault current at the panelboard determines which voltage tap you land it on. The auxiliary switch configuration is two HQ auxiliary switches, giving you status feedback for the PLC or annunciator without an add-on module. At 55 °C it derates to 39 A, at 65 °C to 38 A, and at 70 °C to 37 A. Maximum power loss is 13.3 W, which is modest for a 40 A frame and won't drive much internal temperature rise in a standard enclosure, but it's still a factor if you're packing multiple breakers in a small dead-front panel. The breaker measures 130 mm high, 76.2 mm wide (3 in), and 70 mm deep (2.76 in). ## Operating environment and storage Storage range is wider: -40 °C to 80 °C, which covers unheated warehouses and shipping containers. The operating minimum of -25 °C means it's fine for outdoor enclosures in most temperate climates, but not for deep-freeze or arctic installations without supplementary heating.","metaTitle":"Siemens 3VA1140-3EF36-0DC0 SENTRON MCCB, 40 A, 3-Pole, 75.6","metaDescription":"Siemens SENTRON 3VA1140-3EF36-0DC0 molded case circuit breaker, 40 A rated, 3-pole, 75.6 kA breaking at 240 V. Active production. Available to order. Request quote.","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":"Yes","Design Of The Product":"Line protection","Communication Function":"No","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","power loss [W] / maximum":"13.3 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","Design Of The Auxiliary Release":"undervoltage release (UVR)","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":"3VA9608-0BB25","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=76878&mlfb=3VA1140-3EF36-0DC0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1140-3EF36-0DC0/alternatives.json"},"ai":{"faq":[{"question":"What is the depth of this breaker?","answer":"The depth is 70 mm (2.76 in), measured from the mounting surface to the front of the breaker."},{"question":"Does this breaker include an undervoltage release?","answer":"Yes, it includes an undervoltage release (UVR) as standard, plus two HQ auxiliary switches for status feedback."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1140-3EF36-0DC0","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/3VA1140-3EF36-0DC0 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}}