{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2125-8KP46-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2125-8KP46-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA2125-8KP46-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2125-8KP46-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2125-8KP46-0AA0, molded case circuit breaker (MCCB), line protection, 4-pole, 25 A continuous, adjustable 38–300 A, ETU850 electronic trip unit, 440 kA at 240 V AC, IP40 front.","salesMarkdown":"It carries a continuous current rating of 25 A and is adjustable from a minimum of 38 A up to a maximum of 300 A, giving the specifying engineer a wide band to fine-tune overload protection to the actual load without swapping the breaker frame. The breaker uses an ETU850 electronic trip unit, which enables communication functions — a key feature for panel builders integrating into a networked power-monitoring scheme where trip events, load profiles, and status need to report back to a BMS or SCADA layer. Rated breaking capacity is 440 kA at 240 V AC, 330 kA at 415 V and 440 V, 220 kA at 500 V, and 52.5 kA at 690 V. Dimensions: 86 mm deep, 140 mm wide, 181 mm high — a standard panel-mount footprint for this frame size. Front protection rating is IP40, so it is suitable for dry indoor enclosures where tools or accidental contact are the concern, not washdown. Operating temperature range is -25 °C to 70 °C; storage range is -40 °C to 80 °C. Continuous current rating holds steady at 25 A across the entire operating range from 40 °C up to 70 °C — no derating needed within that window.","metaTitle":"Siemens 3VA2125-8KP46-0AA0 SENTRON MCCB, 25 A, 300 A max, 4-","metaDescription":"Siemens SENTRON 3VA2125-8KP46-0AA0 molded case circuit breaker, 25 A continuous, adjustable 38–300 A, 440 kA at 240 V, ETU850 trip unit, 4-pole, IP40 front, current production. Ava","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"Depth":"86 mm","Width":"140 mm","Height":"181 mm","Maximum":"300 A","Minimum":"38 A","at 240 V":"440 kA","at 415 V":"330 kA","at 440 V":"330 kA","at 500 V":"220 kA","at 690 V":"52.5 kA","at 40 °C":"25 A","at 45 °C":"25 A","at 50 °C":"25 A","at 55 °C":"25 A","at 60 °C":"25 A","at 65 °C":"25 A","at 70 °C":"25 A","Depth [In]":"3.39 in","Width [In]":"5.51 in","Height [In]":"7.13 in","Trip Indicator":"No","Number Of Poles":"4","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":"0.5 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"Yes","Ground-Fault Monitoring Version":"Without","Continuous Current / Rated Value":"25 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":"160 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":"L","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"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/641a6843e8dc2f758bb6426196efa871.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=183133&mlfb=3VA2125-8KP46-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2125-8KP46-0AA0/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2125-8KP46-0AA0","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/3VA2125-8KP46-0AA0 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}}