{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2040-5KP36-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2040-5KP36-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA2040-5KP36-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2040-5KP36-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2040-5KP36-0AA0, molded case circuit breaker, 3-pole, 40 A, ETU850 electronic trip unit, 187 kA interrupting capacity at 240 V AC.","salesMarkdown":"The Siemens 3VA2040-5KP36-0AA0 is a SENTRON molded case circuit breaker (MCCB) rated for 40 A continuous at 40 °C, with no derating needed up to 70 °C — the full 40 A holds across the entire operating temperature range. That means for a panel running hot near the top of a cabinet, you still get the full rated current without having to oversize. Three-pole construction, line protection version, with the ETU850 electronic trip unit. Interrupting capacity 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. At 415 V — the common European distribution voltage — that 121 kA gives serious fault-current headroom for most industrial service-entrance or feeder applications. ## Panel fit and physical integration Front protection is IP40 — suitable for general indoor panel installation where no washdown or dust ingress is expected. ## What the ETU850 trip unit gives you The ETU850 is an electronic trip unit with communication function — it can report status, trip events, and load current over a bus, enabling predictive maintenance and remote monitoring. No undervoltage release or shunt trip is built in (those are optional add-ons), but the motor-drive option is available as a field-installable accessory.","metaTitle":"Siemens 3VA2040-5KP36-0AA0 SENTRON MCCB, 40 A, 3-Pole, ETU85","metaDescription":"Siemens 3VA2040-5KP36-0AA0 SENTRON molded case circuit breaker, 40 A continuous, 3-pole, ETU850 electronic trip unit, 187 kA interrupting 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","Height":"181 mm","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","Trip Indicator":"No","Number Of Poles":"3","Product version":"Line protection","Voltage Trigger":"No","lifecycle_stage":"current","Product Brand Name":"SENTRON","Product Designation":"Molded case circuit breaker","Undervoltage Release":"No","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","Courant permanent assigné Iu":"40 A","Ground-Fault Monitoring Version":"Without","Tension assignée d'isolement Ui":"800 V","Design Of The Overcurrent Release":"ETU850","protection class IP / on the front":"IP40","reference code / acc. to IEC 81346-2":"Q","Product Extension / Optional / Motor Drive":"Yes","Adjustable response value current / li max.":"480 A","Adjustable response value current / li min.":"60 A","Neutral conductors / upgradeable/retrofittable":"Yes","Protection Function Of The Overcurrent Release":"LSI","number of CO contacts / for auxiliary contacts":"0","Switching Capacity Class Of The Circuit Breaker":"M","Max. rated operational current of the frame size":"100 A","Mechanical Service Life (Operating Cycles) / Typical":"25 000","Type Of Electrical Connection / For Main Current Circuit":"double-sided box terminal","Arrangement Of Electrical Connectors / For Main Current Circuit":"Front terminal","Type of connectable conductor cross-section, round conductor terminal, stranded":"1 x (6-120 mm²)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/2f196118694857b6bf81cab9d35be2f4.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=525877&mlfb=3VA2040-5KP36-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2040-5KP36-0AA0/alternatives.json"},"ai":{"faq":[{"question":"Will 3VA2040-5KP36-0AA0 drop into a panel specified around 5SQ2370-2YA05?","answer":"The 3VA2040-5KP36-0AA0 is a 3-pole MCCB with a 105 mm width, which matches the standard footprint of many 3-pole MCCBs in this class. However, the 5SQ2370-2YA05 is a different series with potentially different mounting hole patterns and busbar connections — verify the physical fit and terminal arrangement against your panel layout before ordering."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2040-5KP36-0AA0","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/3VA2040-5KP36-0AA0 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}}