{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2125-8JQ32-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2125-8JQ32-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA2125-8JQ32-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2125-8JQ32-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2125-8JQ32-0AA0, molded case circuit breaker, 3-pole, 25 A rated continuous current, 330 kA breaking capacity at 415 V AC, line protection design with communication function.","salesMarkdown":"## Ratings that matter for the panel builder The 3VA2125-8JQ32-0AA0: The 25 A rating holds flat from 40 °C up to 70 °C ambient — no derating curve to chase in a warm enclosure. The 3-pole unit measures 105 mm wide, 181 mm tall, and 86 mm deep, so it occupies a standard MCCB footprint on the DIN rail or mounting plate. The communication function onboard means it can report status or trip events to a higher-level controller, useful for remote monitoring in a distribution panel. Interrupting capacity is specified per voltage: 440 kA at 240 V, 330 kA at 415 V and 440 V, 220 kA at 500 V, and 52.5 kA at 690 V. The 330 kA at 415 V is the figure most relevant for European 400 V-class industrial networks — it exceeds the typical 50-65 kA available fault current at a secondary substation, so this breaker can be applied close to the transformer without a current-limiting upstream device. Lifecycle status is current — the 3VA2125-8JQ32-0AA0 is an active catalog item in the SENTRON MCCB family, not subject to a last-time-buy or phase-out notice.","metaTitle":"Siemens 3VA2125-8JQ32-0AA0 SENTRON MCCB, 25 A, 3-Pole, 330 k","metaDescription":"Siemens SENTRON 3VA2125-8JQ32-0AA0 molded case circuit breaker, 25 A rated, 3-pole, 330 kA breaking at 415 V. Active production. Quoted 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":"105 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]":"4.13 in","Height [In]":"7.13 in","Initial Value":"15 A","Trip Indicator":"No","Number Of Poles":"3","Voltage Trigger":"No","lifecycle_stage":"current","Full-Scale Value":"25 A","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":"No","Ground-Fault Monitoring Version":"Summation current formation L-conductor","Continuous Current / Rated Value":"25 A","Insulation Voltage / Rated Value":"800 V","Design Of The Overcurrent Release":"ETU560","protection class IP / on the front":"IP40","design of the N-conductor protection":"adjustable OFF; 40% to 160%","Product Function / Grounding Protection":"Yes","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":"LSIG","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":"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=252931&mlfb=3VA2125-8JQ32-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2125-8JQ32-0AA0/alternatives.json"},"ai":{"faq":[{"question":"Will 3VA2125-8JQ32-0AA0 drop into a panel specified for 3VA2125-8KQ42-0AA0 without rewiring?","answer":"Yes — both variants share the same 105 mm width, 181 mm height, 86 mm depth, and 3-pole termination layout. The mounting holes and bus-bar connection points are identical. No rewiring needed for the power circuit; verify the control wiring for the communication and ground-fault monitoring terminals, which may differ between the two order codes."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2125-8JQ32-0AA0","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/3VA2125-8JQ32-0AA0 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}}