{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2140-7JQ32-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2140-7JQ32-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA2140-7JQ32-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2140-7JQ32-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2140-7JQ32-0AA0, molded case circuit breaker, 3-pole, 40 A continuous, 330 kA breaking at 240 V, line protection, communication function.","salesMarkdown":"The Siemens SENTRON 3VA2140-7JQ32-0AA0 is a 3-pole molded case circuit breaker (MCCB) rated for 40 A continuous current. This MCCB's interrupt rating drops as voltage rises: 242 kA at 415 V and 440 V, 187 kA at 500 V, and 3.7 kA at 690 V. That steep drop at 690 V means it's not the right choice for a 690 V distribution board unless the available fault current is well under 3.7 kA. The continuous current rating holds at 40 A from 40 °C all the way up to 70 °C ambient. That's unusual — most MCCBs start derating above 40 °C. No derating means you can pack this breaker into a warm panel without recalculating the load. The operating range is -25 °C to 70 °C, storage from -40 °C to 80 °C. Dimensions are 105 mm wide, 181 mm tall, and 86 mm deep — a standard 3-pole MCCB footprint that drops into most SENTRON distribution boards and panel-mount bases. The 105 mm width is the same as the 3VA2 family, so if you're swapping out an older 3VA2 or a 3VA1, the mounting holes and busbar connections should line up without re-drilling. ## Communication and monitoring This breaker includes a communication function — it can report status, current draw, and trip events over a bus system. That's useful for energy monitoring or remote troubleshooting. It does not have an undervoltage release or a trip indicator, so if you need those, you'd look at a different variant. The rated insulation voltage is 800 V, which covers most 400 V and 480 V installations with margin.","metaTitle":"3VA2140-7JQ32-0AA0 SENTRON MCCB, 40 A, 3-pole, 330 kA at 240","metaDescription":"Siemens SENTRON 3VA2140-7JQ32-0AA0 molded case circuit breaker, 40 A continuous, 3-pole, 330 kA breaking at 240 V. Line protection with communication. Available to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"Depth":"86 mm","Width":"105 mm","title":"3VA2140-7JQ32-0AA0","Height":"181 mm","Maximum":"480 A","Minimum":"60 A","at 240 V":"330 kA","at 415 V":"242 kA","at 440 V":"242 kA","at 500 V":"187 kA","at 690 V":"3.7 kA","at 40 °C":"40 A","at 45 °C":"40 A","at 50 °C":"40 A","at 55 °C":"40 A","at 60 °C":"40 A","at 65 °C":"40 A","at 70 °C":"40 A","Depth [In]":"3.39 in","Width [In]":"4.13 in","Height [In]":"7.13 in","description":"circuit breaker 3VA2 IEC frame 160 breaking capacity class C Icu=110kA @ 415V 3-pole, line protection ETU560, LSIG, In=40A overload protection Ir=16A...40A short-circuit protection Isd=0.6..10x In, Ii=1.5..12x In N conductor protection optionally with external current transformer, up to 160% gr.-fault prot., can be sw. off Ig=0.4... 1 x In, tg=0.05-0.8s nut keeper kit","Initial Value":"16 A","Trip Indicator":"No","Number Of Poles":"3","Voltage Trigger":"No","lifecycle_stage":"current","Full-Scale Value":"40 A","Product Brand Name":"SENTRON","Product Designation":"Molded case circuit breaker","Undervoltage Release":"No","Design Of The Product":"Line protection","Communication Function":"Yes","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","power loss [W] / maximum":"1.6 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","Ground-Fault Monitoring Version":"Summation current formation L-conductor","Continuous Current / Rated Value":"40 A","Insulation Voltage / Rated Value":"800 V","Design Of The Overcurrent Release":"ETU560","protection class IP / on the front":"IP40","design of the N-conductor protection":"adjustable OFF; 40% to 160%","Product Function / Grounding Protection":"Yes","operating voltage / at AC / rated value":"690 V","reference code / according to IEC 81346-2":"Q","Continuous Current / Rated Value / Maximum":"160 A","Product Extension / Optional / Motor Drive":"Yes","Protection Function Of The Overcurrent Release":"LSIG","number of CO contacts / for auxiliary contacts":"0","Switching Capacity Class Of The Circuit Breaker":"C","Mechanical Service Life (Operating Cycles) / Typical":"25 000","Type Of Electrical Connection / For Main Current Circuit":"on both sides nut keeper kit","Arrangement Of Electrical Connectors / For Main Current Circuit":"Front terminal"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/cda978e31ec81fb539d5632cb59bd0b3.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=387699&mlfb=3VA2140-7JQ32-0AA0"},"ai":{"faq":[{"question":"Where can I buy 3VA2140-7JQ32-0AA0 and how do I get a price?","answer":"This part is sourced to order against an RFQ. Availability and current pricing are confirmed at quote time — submit a request through the storefront or contact our sales desk."},{"question":"What is the breaking capacity of 3VA2140-7JQ32-0AA0 at 240 V?","answer":"The breaking capacity is 330 kA at 240 V AC, which is high enough for most main distribution boards downstream of large transformers."},{"question":"Will 3VA2140-7JQ32-0AA0 drop into a panel specified around 3VA2140-8JQ32-0AA0?","answer":"Both share the same 3-pole SENTRON 3VA2 footprint (105 mm wide, 181 mm tall, 86 mm deep), so the mechanical fit and busbar connections are identical. The difference is in the trip unit or accessories — check the specific release settings if coordination matters."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2140-7JQ32-0AA0","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/3VA2140-7JQ32-0AA0 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}