{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2125-7HN46-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2125-7HN46-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA2125-7HN46-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2125-7HN46-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2125-7HN46-0AA0, molded case circuit breaker, 4-pole, 25 A, ETU350 electronic trip unit, 330 kA at 240 V, IP40 front.","salesMarkdown":"## What this MCCB delivers Breaking capacity is where this breaker earns its keep: 330 kA at 240 V AC, 242 kA at 415 V and 440 V, 187 kA at 500 V, and 3.7 kA at 690 V. IP40 on the front means tools or fingers won't reach live parts in a closed panel — standard for indoor distribution boards. The 140 mm width across four poles is the dimension to check against existing busbar spacing or phase barriers in a retrofit panel. Depth of 86 mm leaves room for rear-connected busbars or a cable duct behind the breaker.","metaTitle":"Siemens 3VA2125-7HN46-0AA0 SENTRON MCCB, 25 A, 4-Pole, ETU35","metaDescription":"Siemens SENTRON 3VA2125-7HN46-0AA0 molded case circuit breaker, 25 A continuous, 4-pole, ETU350 trip unit. Breaking capacity 330 kA at 240 V. Active production. 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":"140 mm","Height":"181 mm","Maximum":"300 A","Minimum":"300 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":"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":"No","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","power loss [W] / maximum":"0.6 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","Ground-Fault Monitoring Version":"Without","Continuous Current / Rated Value":"25 A","Insulation Voltage / Rated Value":"800 V","Design Of The Overcurrent Release":"ETU350","protection class IP / on the front":"IP40","design of the N-conductor protection":"adjustable OFF; 100%","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":"C","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=225319&mlfb=3VA2125-7HN46-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2125-7HN46-0AA0/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of this MCCB at different voltages?","answer":"Breaking capacity is 330 kA at 240 V, 242 kA at 415 V and 440 V, 187 kA at 500 V, and 3.7 kA at 690 V."},{"question":"What trip unit does the 3VA2125-7HN46-0AA0 use?","answer":"It uses the ETU350 electronic trip unit, which provides adjustable overload and short-circuit protection settings."},{"question":"Where can I buy 3VA2125-7HN46-0AA0 and get current pricing?","answer":"This breaker is sourced to order through independent distribution. Submit an RFQ for current pricing and availability — confirmed at quote time."},{"question":"Will 3VA2125-7HN46-0AA0 drop into a panel specified for 3VA2040-8HN42-0AA0?","answer":"Both are 4-pole SENTRON 3VA2 breakers sharing the same mounting footprint, so the physical swap is straightforward. The main difference is the trip rating — 25 A here versus 40 A on the 3VA2040 — so verify the branch circuit's ampacity before substitution."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2125-7HN46-0AA0","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/3VA2125-7HN46-0AA0 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}}