{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2125-8JQ46-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2125-8JQ46-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA2125-8JQ46-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2125-8JQ46-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2125-8JQ46-0AA0, molded case circuit breaker, 25 A, 4-pole, line protection, 440 kA at 240 V, 800 V insulation voltage, with communication function and ground-fault monitoring.","salesMarkdown":"## Siemens SENTRON 3VA2125-8JQ46-0AA0 — 25 A 4-Pole MCCB with Ground-Fault Monitoring Its 800 V rated insulation voltage and breaking capacity of 440 kA at 240 V — derating to 330 kA at 415 V and 52.5 kA at 690 V — give it the headroom for high-fault industrial services where selectivity and SCCR coordination matter. This makes it suitable for feeder circuits where ground-fault detection is required without a separate relay. Panel cutout and busbar spacing match the SENTRON 3VA family; verify the existing mounting plate accommodates the 140 mm width before ordering.","metaTitle":"Siemens 3VA2125-8JQ46-0AA0 SENTRON MCCB, 25 A, 4-Pole, 440 k","metaDescription":"Siemens SENTRON 3VA2125-8JQ46-0AA0 molded case circuit breaker, 25 A continuous, 4-pole, 440 kA breaking capacity at 240 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":"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","Initial Value":"15 A","Trip Indicator":"No","Number Of Poles":"4","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 + N 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":"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=209967&mlfb=3VA2125-8JQ46-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2125-8JQ46-0AA0/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of 3VA2125-8JQ46-0AA0 at different voltages?","answer":"At 240 V it is rated for 440 kA, at 415 V and 440 V for 330 kA, at 500 V for 220 kA, and at 690 V for 52.5 kA."},{"question":"Does 3VA2125-8JQ46-0AA0 include ground-fault monitoring?","answer":"Yes, it uses summation-current formation on the L + N conductors for ground-fault detection."},{"question":"Where can I buy 3VA2125-8JQ46-0AA0?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution channels — availability and current pricing are confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2125-8JQ46-0AA0","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/3VA2125-8JQ46-0AA0 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}}