{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1140-6EF32-0AG0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1140-6EF32-0AG0","canonicalUrl":"https://aoctrl.com/siemens/3VA1140-6EF32-0AG0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1140-6EF32-0AG0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1140-6EF32-0AG0, molded case circuit breaker, 3-pole, 40 A, TM240 thermal-magnetic release, 220 kA breaking capacity at 240 V, line protection design.","salesMarkdown":"## MCCB for high-fault line protection Its TM240 thermal-magnetic release handles overload and short-circuit tripping without external power. The key spec here is the interrupting capacity: 220 kA at 240 V, 154 kA at 415 V, 121 kA at 440 V — that kind of headroom means it safely clears high-fault scenarios on the secondary side of a distribution transformer or near a large motor bank without cascading upstream breakers. The thermal derating curve is flat up to 50 °C (still 40 A), then drops to 39 A at 55 °C and 37 A at 70 °C. That matters for a sealed enclosure or high-ambient panel — you don't lose much headroom until the air inside hits 55 °C. Maximum power loss is 10.8 W, manageable in a standard IP54 cabinet without forced ventilation. That 3-inch width per pole is standard for SENTRON 3VA frames in this rating class — it drops into the same DIN-rail or panel-mount cutout as other 3VA 40 A breakers. ## What the breaking capacities mean for coordination The 220 kA at 240 V is the headline number, but the real-world selectivity story is at 415 V (154 kA) and 440 V (121 kA). On a 400 V three-phase system, that 154 kA SCCR lets you place this MCCB downstream of a 1600 A main breaker without worrying about cascading failure during a bolted fault. The 17 kA rating at 690 V is still enough for most 690 V drives and motor circuits, but if your fault current exceeds that, you need an upstream current-limiting device.","metaTitle":"Siemens 3VA1140-6EF32-0AG0 SENTRON MCCB, 40 A, 220 kA at 240","metaDescription":"Siemens 3VA1140-6EF32-0AG0 SENTRON molded case circuit breaker, 3-pole, 40 A, TM240 release, 220 kA at 240 V. 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":"220 kA","at 415 V":"154 kA","at 440 V":"121 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":"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":"3VA11406EF320AA0","Design Of The Auxiliary Switch":"1 auxiliary switch + 1 trip alarm switch HP","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":"3VA9988-0AB11","Switching Capacity Class Of The Circuit Breaker":"H","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=15586&mlfb=3VA1140-6EF32-0AG0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1140-6EF32-0AG0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1140-6EF32-0AG0 and how do I get pricing?","answer":"This part is sourced and quoted to order against an RFQ through our independent distribution network. Availability and current pricing are confirmed at quote time — submit an RFQ and we'll get you a firm price and lead time."},{"question":"What is the closest functional second-source to 3VA1140-6EF32-0AG0?","answer":"The closest peer in the SENTRON 3VA family is the 3VA1110-5EF32-0AM0, which shares the same 3-pole frame, 40 A rating, and TM240 release. The difference is in the breaking capacity and optional accessories — the 3VA1140-6EF32-0AG0 carries the higher interrupting ratings (220 kA at 240 V vs lower on the 1110 series). For a panel originally specified around the 3VA1110-5EF32-0AM0, the 3VA1140-6EF32-0AG0 will drop into the same cutout and wiring footprint, but verify the auxiliary switch configuration matches your BOM."},{"question":"What is the depth of the 3VA1140-6EF32-0AG0?","answer":"The depth is 70 mm (2.76 inches). That's the body depth behind the panel face, not including any handle projection."},{"question":"What is the width of the 3VA1140-6EF32-0AG0?","answer":"The width is 76.2 mm (3 inches), which is standard for a 3-pole SENTRON MCCB in this frame size."},{"question":"Will the 3VA1140-6EF32-0AG0 drop into a panel specified around the 3VA1110-5EF32-0AM0 without rewiring?","answer":"Yes — both share the same 3-pole 76.2 mm wide footprint and same TM240 thermal-magnetic release. The mounting hole pattern and bus-bar spacing are identical across the 3VA 40 A frame. The auxiliary switch configuration differs (this one has 1 aux + 1 trip alarm), so check your control wiring for the alarm contact."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1140-6EF32-0AG0","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/3VA1140-6EF32-0AG0 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}}