{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2125-6HN32-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2125-6HN32-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA2125-6HN32-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2125-6HN32-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON molded case circuit breaker, 3VA2125-6HN32-0AA0, 3-pole, 25 A, ETU350 electronic trip unit, line protection design.","salesMarkdown":"The Siemens 3VA2125-6HN32-0AA0 is a SENTRON 3-pole molded case circuit breaker rated for 25 A continuous current, designed for line protection with an ETU350 electronic overcurrent release. ## Breaking capacity and selectivity Breaking capacity is voltage-dependent: 242 kA at 240 V, 187 kA at 415 V and 440 V, 121 kA at 500 V, and 3.7 kA at 690 V. That 242 kA at 240 V means this breaker can interrupt nearly a quarter-million amps under a bolted fault at that voltage — critical for high-fault-current panels fed close to a transformer. Rated insulation voltage is 800 V, so the breaker's internal clearance and creepage are sized for 690 V line-to-line systems with margin. The ETU350 electronic trip unit allows adjustable overload and short-circuit protection curves, giving the engineer selectivity coordination options a fixed-thermal breaker cannot match. ## Deployment context Front protection is IP40, meaning tools or fingers won't contact live parts from the front face, but the breaker is not sealed against dust ingress — install in a panel with an IP54 or higher enclosure when washdown or airborne particulates are present. Dimensions of 105 mm wide by 181 mm tall by 86 mm deep fit the standard SENTRON 3VA mounting footprint, so it drops into existing 3VA panel cutouts and bus-bar arrangements without re-drilling.","metaTitle":"Siemens 3VA2125-6HN32-0AA0 SENTRON Molded Case Circuit Break","metaDescription":"Siemens 3VA2125-6HN32-0AA0 SENTRON 3-pole MCCB rated 25 A continuous with ETU350 release. Breaking capacity 242 kA at 240 V. Current lifecycle stage, available to order. Request qu","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","Maximum":"300 A","Minimum":"300 A","at 240 V":"242 kA","at 415 V":"187 kA","at 440 V":"187 kA","at 500 V":"121 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]":"4.13 in","Height [In]":"7.13 in","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":"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","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":"H","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,"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=198846&mlfb=3VA2125-6HN32-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2125-6HN32-0AA0/alternatives.json"},"ai":{"faq":[{"question":"Will 3VA2125-6HN32-0AA0 drop into a panel specified around 5SQ2370-2YA05 without rewiring?","answer":"The 3VA2125-6HN32-0AA0 uses the standard SENTRON 3VA mounting footprint (105 mm wide). The 5SQ2370-2YA05 is a different Siemens series with a different lug arrangement and bus-bar spacing — mechanical fit is not guaranteed without verifying the panel cutout and bus centers."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2125-6HN32-0AA0","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/3VA2125-6HN32-0AA0 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}}