{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2125-5KQ32-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2125-5KQ32-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA2125-5KQ32-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2125-5KQ32-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2125-5KQ32-0AA0, 3-pole molded case circuit breaker, 25 A rated continuous current, 187 kA interrupting at 240 V, line protection with ground-fault summation current sensing.","salesMarkdown":"## 25 A MCCB with ground-fault summation and communication Its interrupting capacity hits 187 kA at 240 V, 121 kA at 415 V, and 75.6 kA at 500 V — numbers that govern fault-clearing at the main distribution board or high-fault substation feeder. Communication function is built in, so it can report status or trip events to a higher-level control system without an add-on module. ## Interrupting capacity across voltage levels At 415 V the rating holds at 121 kA, and at 440 V it stays at 121 kA. At 500 V it drops to 75.6 kA, and at 690 V it falls to 3.7 kA. ## Integration dimensions and panel fit At 86 mm deep, 105 mm wide, and 181 mm tall, the 3VA2125-5KQ32-0AA0 fits standard 3-pole MCCB panel cutouts. The 3-pole design accepts up to 300 A maximum frame rating and down to 38 A minimum, though this specific unit is set for 25 A. ## Environmental and electrical ratings No undervoltage release or trip indicator is built into this order code, so if those features are needed, specify a different suffix.","metaTitle":"Siemens 3VA2125-5KQ32-0AA0 SENTRON MCCB, 25 A, 3-Pole, 187 k","metaDescription":"Siemens 3VA2125-5KQ32-0AA0 SENTRON molded case circuit breaker, 25 A continuous, 3-pole, 187 kA interrupting at 240 V. Line protection with ground-fault summation. Active productio","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":"187 kA","at 415 V":"121 kA","at 440 V":"121 kA","at 500 V":"75.6 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","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":"0.6 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"Yes","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":"ETU860","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":"M","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=486133&mlfb=3VA2125-5KQ32-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2125-5KQ32-0AA0/alternatives.json"},"ai":{"faq":[{"question":"What is the interrupting capacity of 3VA2125-5KQ32-0AA0 at 240 V?","answer":"187 kA at 240 V, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 3.7 kA at 690 V."},{"question":"Will 3VA2125-5KQ32-0AA0 fit a panel designed for 3VA1110-5ED32-0AA0?","answer":"Yes, the 105 mm width matches the 3VA1 frame, so it drops into the same panel cutout without rewiring or drilling new mounting holes."},{"question":"What is the depth of 3VA2125-5KQ32-0AA0?","answer":"86 mm (3.39 in), which fits standard 200 mm deep enclosures with wiring gutters."},{"question":"Where can I buy 3VA2125-5KQ32-0AA0 and how is it quoted?","answer":"This MCCB is sourced and quoted to order against an RFQ through independent distribution. 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/3VA2125-5KQ32-0AA0","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/3VA2125-5KQ32-0AA0 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}}