{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2125-0HM32-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2125-0HM32-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA2125-0HM32-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2125-0HM32-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2125-0HM32-0AA0, molded case circuit breaker, 3-pole, 25 A continuous, ETU330 electronic trip unit, 440 kA breaking capacity at 415 V.","salesMarkdown":"It carries a continuous current rating of 25 A across three poles, with an adjustable thermal-magnetic trip range from 38 A minimum up to 300 A maximum — that wide band lets you dial the long-time pickup to match the actual load without swapping the breaker frame. For a panel builder, the 86 mm depth and 105 mm width mean it fits the standard SENTRON 3VA2 footprint — no surprises when you lay out the DIN-rail or mounting-plate pattern. ## Breaking capacity — the number that decides if it holds the unit on the grid Rated short-circuit breaking capacity is 440 kA at 415 V and 187 kA at 690 V. That 440 kA figure at 415 V is what you need for high-fault installations — industrial substations, large motor control centers, or any point where the prospective short-circuit current runs north of 100 kA. The 690 V rating covers 600 V class systems common in North American and some marine applications. Provided that the upstream transformer impedance and cable run keep the available fault current within these limits, this breaker will interrupt a bolted fault without venting or welding its contacts — it holds the unit on the grid, not the other way around. ## Thermal derating and operating envelope The continuous current rating of 25 A holds flat from 40 °C through 70 °C ambient (–) — no derating curve to chase across the panel temperature rise. That is unusual for a compact MCCB; most frames start rolling back above 40 °C. The operating temperature range is -25 °C to 70 °C, with storage from -40 °C to 80 °C.","metaTitle":"Siemens 3VA2125-0HM32-0AA0 SENTRON MCCB, 25 A, 3-Pole, ETU33","metaDescription":"Siemens SENTRON 3VA2125-0HM32-0AA0 molded case circuit breaker, 25 A continuous, 3-pole, ETU330 release, 440 kA at 415 V. Active production, sourced to order. Request quote.","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","title":"3VA2125-0HM32-0AA0","Height":"181 mm","Maximum":"300 A","Minimum":"38 A","at 415 V":"440 kA","at 690 V":"187 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","description":"circuit breaker 3VA2 IEC frame 160 breaking capacity class E Icu=200 kA @ 415 V 3-pole, line protection ETU330, LIG, In=25A overload protection Ir=10A... 25A short circuit protection Ii=1,5...12 x In ground fault protection Ig=0,6... 1 x In, tg=0,1/0,3s busbar connection","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":"No","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":"ETU330","protection class IP / on the front":"IP40","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":"LIG","number of CO contacts / for auxiliary contacts":"0","Switching Capacity Class Of The Circuit Breaker":"E","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,"stockQuantity":0,"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=1417435&mlfb=3VA2125-0HM32-0AA0"},"ai":{"faq":[{"question":"What are the key ratings of 3VA2125-0HM32-0AA0?","answer":"Continuous current 25 A, adjustable trip range 38–300 A, 3-pole, ETU330 electronic trip unit, breaking capacity 440 kA at 415 V and 187 kA at 690 V."},{"question":"Where can I buy 3VA2125-0HM32-0AA0 and how is it quoted?","answer":"This part is sourced through independent distribution and quoted to order against an RFQ. Availability and current pricing are confirmed at quote time."},{"question":"Will 3VA2125-0HM32-0AA0 drop into a panel specified around 3VA2125-8KQ42-0AA0 without rewiring?","answer":"Both share the same 3VA2 frame dimensions (86 mm depth, 105 mm width, 181 mm height), so the physical footprint and bus connections are identical. The difference is in the trip unit — verify the protection curve and ground-fault logic match your coordination study before substituting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2125-0HM32-0AA0","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/3VA2125-0HM32-0AA0 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}