{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2125-8KP32-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2125-8KP32-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA2125-8KP32-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2125-8KP32-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2125-8KP32-0AA0, Molded case circuit breaker, Line protection, 3-pole, 25 A (Iu), ETU850, 440 kA at 240 V, 330 kA at 415 V, IP40 front.","salesMarkdown":"The Siemens SENTRON 3VA2125-8KP32-0AA0 is a 3-pole molded case circuit breaker (MCCB) rated for line protection, carrying a continuous current Iu of 25 A across the full ambient range from 40 °C to 70 °C with no derating — that is, it holds 25 A at 70 °C, which is unusual and simplifies panel layout in hot enclosures. The interrupting ratings climb steeply: 440 kA at 240 V, 330 kA at 415 V and 440 V, 220 kA at 500 V, and still 52.5 kA at 690 V — so this breaker handles high-fault scenarios across common industrial voltages without needing an upstream current-limiting fuse. Power loss is only 0.5 W maximum, so heat buildup in a dense cabinet is negligible — no special ventilation required around this breaker. Communication function is built in, meaning it can integrate with a higher-level monitoring system for trip data and status — useful for a plant that tracks breaker events centrally rather than walking the panel. The closest functional peer is the 3VA2163-8JQ32-0AA0, which is also a 3-pole SENTRON MCCB with an ETU850 trip unit but rated at 63 A (Iu) instead of 25 A. The frame size is larger — the 63 A version uses a wider housing, so it will not drop into a panel cutout sized for the 25 A frame without mechanical modification. If your BOM calls for 25 A protection, the 3VA2125-8KP32-0AA0 is the correct fit; the 63 A sibling is a different frame and not a simple swap.","metaTitle":"Siemens 3VA2125-8KP32-0AA0 SENTRON MCCB, 25 A, 3-Pole, 440 k","metaDescription":"Siemens SENTRON 3VA2125-8KP32-0AA0 molded case circuit breaker, 25 A rated current Iu, 3-pole, ETU850 trip unit, 440 kA at 240 V. Current lifecycle. Sourced to order against RFQ.","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","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","Trip Indicator":"No","Number Of Poles":"3","Product version":"Line protection","Voltage Trigger":"No","lifecycle_stage":"current","Product Brand Name":"SENTRON","Product Designation":"Molded case circuit breaker","Undervoltage Release":"No","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":"Yes","Courant permanent assigné Iu":"25 A","Ground-Fault Monitoring Version":"Without","Tension assignée d'isolement Ui":"800 V","Design Of The Overcurrent Release":"ETU850","protection class IP / on the front":"IP40","reference code / acc. to IEC 81346-2":"Q","Product Extension / Optional / Motor Drive":"Yes","Adjustable response value current / li max.":"300 A","Adjustable response value current / li min.":"38 A","Neutral conductors / upgradeable/retrofittable":"Yes","Protection Function Of The Overcurrent Release":"LSI","number of CO contacts / for auxiliary contacts":"0","Switching Capacity Class Of The Circuit Breaker":"L","Max. rated operational current of the frame size":"160 A","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","Type of connectable conductor cross-section, connection screw, width x thickness , min.":"13 x 1 mm"}},"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=226574&mlfb=3VA2125-8KP32-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2125-8KP32-0AA0/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2125-8KP32-0AA0","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/3VA2125-8KP32-0AA0 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}}