{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2040-5KP32-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2040-5KP32-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA2040-5KP32-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2040-5KP32-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2040-5KP32-0AA0, molded case circuit breaker, 3-pole, 40 A rated continuous current, ETU850 electronic trip unit, line protection design, 187 kA breaking capacity at 240 V AC.","salesMarkdown":"The Siemens 3VA2040-5KP32-0AA0 is a SENTRON molded case circuit breaker (MCCB) rated for 40 A continuous current, built on a 3-pole frame that accepts trip units from 60 A up to 480 A. This breaker's interrupting rating is 187 kA at 240 V AC, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 3 kA at 690 V. Those are the maximum fault currents it can safely clear at each voltage level. Power loss is 2.2 W maximum at rated current, so heat buildup in a dense panel is negligible. ## What the ETU850 trip unit gives you The ETU850 is an electronic trip unit with a communication function — it can talk to a higher-level system via the breaker's optional communication module (not included, but the interface is built in). It also has an 'other measurement function' capability, meaning it can report load current and event logs if the panel has the right gateway. The trip indicator is not present on this variant (no mechanical flag), so fault indication comes through the electronic interface or a separate auxiliary contact. ## Environmental limits and storage Operating temperature range is -25 °C to +70 °C, with no derating needed across the full span — the 40 A rating holds at every temperature from 40 °C up to 70 °C.","metaTitle":"Siemens 3VA2040-5KP32-0AA0 SENTRON MCCB, 40 A, 3-Pole, ETU85","metaDescription":"Siemens 3VA2040-5KP32-0AA0 SENTRON molded case circuit breaker, 40 A rated, 3-pole, ETU850 electronic trip unit. Breaking capacity 187 kA at 240 V. Active production. Sourced to or","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":"3VA2040-5KP32-0AA0","Height":"181 mm","Maximum":"480 A","Minimum":"60 A","at 240 V":"187 kA","at 415 V":"121 kA","at 440 V":"121 kA","at 500 V":"75.6 kA","at 690 V":"3 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 100 breaking capacity class M Icu=55kA @ 415V 3-pole, line protection ETU850, LSI, 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% nut keeper kit","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":"No","Design Of The Product":"Line protection","Communication Function":"Yes","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","power loss [W] / maximum":"2.2 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"Yes","Ground-Fault Monitoring Version":"Without","Continuous Current / Rated Value":"40 A","Insulation Voltage / Rated Value":"800 V","Design Of The Overcurrent Release":"ETU850","protection class IP / on the front":"IP40","design of the N-conductor protection":"adjustable OFF; 40% to 160%","Product Function / Grounding Protection":"No","operating voltage / at AC / rated value":"690 V","reference code / according to IEC 81346-2":"Q","Continuous Current / Rated Value / Maximum":"100 A","Product Extension / Optional / Motor Drive":"Yes","Protection Function Of The Overcurrent Release":"LSI","number of CO contacts / for auxiliary contacts":"0","Switching Capacity Class Of The Circuit Breaker":"M","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/75e01a5e8901109d9db7069278af13a5.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=434106&mlfb=3VA2040-5KP32-0AA0"},"ai":{"faq":[{"question":"Where can I buy 3VA2040-5KP32-0AA0?","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 3VA2040-5KP32-0AA0 at 240 V?","answer":"187 kA at 240 V AC. At 415 V and 440 V it's 121 kA, at 500 V it's 75.6 kA, and at 690 V it's 3 kA."},{"question":"Does 3VA2040-5KP32-0AA0 have communication capability?","answer":"Yes, the ETU850 trip unit has a communication function built in, allowing connection to an optional communication module for remote monitoring and data reporting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2040-5KP32-0AA0","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/3VA2040-5KP32-0AA0 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}}