{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1140-5EF32-0DC0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1140-5EF32-0DC0","canonicalUrl":"https://aoctrl.com/siemens/3VA1140-5EF32-0DC0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1140-5EF32-0DC0","rawCanonicalId":null},"summary":{"shortDescription":"SENTRON 3VA1140-5EF32-0DC0, a 3-pole molded case circuit breaker, line protection design, rated 40 A at 40 °C with 187 kA breaking capacity at 240 V AC, equipped with undervoltage release and 2 auxiliary switches HQ.","salesMarkdown":"## What this MCCB carries on the line side Rated 40 A at 40 °C with a symmetrical breaking capacity of 187 kA at 240 V AC, it clears high-fault scenarios without cascading upstream. At 415 V AC it still interrupts 121 kA, and at 690 V AC it holds 17 kA, so it's sized for industrial supply voltages where fault currents are substantial. The 40 A rating holds flat from 40 °C up to 50 °C. Above that it derates gradually: 39 A at 55 °C and 60 °C, 38 A at 65 °C, and 37 A at 70 °C. The breaker measures 130 mm high, 76.2 mm wide, and 70 mm deep — a 3-pole MCCB footprint that fits standard Siemens SENTRON mounting plates and busbar systems. The 76.2 mm width (3 inches) is a common pole spacing; you can land it in an existing panel that was laid out for a 3VA1-series frame without re-drilling. Power loss is 13.3 W maximum, which matters for thermal calculations in a sealed enclosure.","metaTitle":"SENTRON 3VA1140-5EF32-0DC0 MCCB, 3-Pole, 40A, 187kA at 240V","metaDescription":"SENTRON 3VA1140-5EF32-0DC0 molded case circuit breaker, 3-pole, 40A rated at 40°C, 187kA breaking capacity at 240V AC. 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":"187 kA","at 415 V":"121 kA","at 440 V":"75.6 kA","at 500 V":"17 kA","at 690 V":"17 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":"3VA11405EF320AA0","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":"M","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=177066&mlfb=3VA1140-5EF32-0DC0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1140-5EF32-0DC0/alternatives.json"},"ai":{"faq":[{"question":"What breaking capacity does the 3VA1140-5EF32-0DC0 have at 240 V AC?","answer":"It has a symmetrical breaking capacity of 187 kA at 240 V AC, 121 kA at 415 V AC, 75.6 kA at 440 V AC, and 17 kA at 500 V and 690 V AC."},{"question":"What is the rated current of this MCCB and how does it derate with temperature?","answer":"The rated current is 40 A from 40 °C to 50 °C. It derates to 39 A at 55 °C and 60 °C, 38 A at 65 °C, and 37 A at 70 °C."},{"question":"Does the 3VA1140-5EF32-0DC0 include an undervoltage release?","answer":"Yes, it is factory-equipped with an undervoltage release (UVR) and two auxiliary switches (HQ type) for status signaling."},{"question":"Where can I buy the 3VA1140-5EF32-0DC0 and how is it quoted?","answer":"This part is sourced and quoted to order through independent distribution. Submit an RFQ for current availability and pricing — confirmed at quote time, not a stock count or price list."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1140-5EF32-0DC0","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/3VA1140-5EF32-0DC0 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}}