{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2125-7HM32-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2125-7HM32-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA2125-7HM32-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2125-7HM32-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2 series, molded case circuit breaker (MCCB), 3VA2125-7HM32-0AA0, 25 A, 3-pole, ETU330 electronic trip unit, line protection, 330 kA at 240 V AC.","salesMarkdown":"The Siemens 3VA2125-7HM32-0AA0 is a SENTRON 3VA2 molded case circuit breaker (MCCB) rated for 25 A continuous current (Iu) across the full ambient range from 40 °C to 70 °C — no derating needed up to the top of the enclosure's thermal curve. That flat 25 A rating means it holds its full ampacity in a warm panel, which is uncommon for a breaker this compact. Its interrupting capacity is the headline number: 330 kA at 240 V AC, 242 kA at 415 V and 440 V, 187 kA at 500 V, and 3.7 kA at 690 V. Those are very high fault-current ratings for a 25 A frame — it safely clears a bolted fault at the service entrance without cascading upstream, which is the main reason you'd pick this over a standard 25 A MCCB. The electronic trip unit is an ETU330 — a fixed-curve, line-protection release with no adjustable long-time or short-time pickup. It's set for overload and short-circuit protection on distribution feeders, not motor starting. That covers 480/277 V and 600 V distribution systems common in North America and 400 V three-phase in Europe, with headroom for 690 V industrial networks.","metaTitle":"Siemens 3VA2125-7HM32-0AA0 SENTRON MCCB, 25 A, 3-Pole, ETU33","metaDescription":"Siemens 3VA2125-7HM32-0AA0 SENTRON molded case circuit breaker, 25 A, 3-pole, 330 kA at 240 V AC, ETU330 release. Current production. Sourced 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","at 240 V":"330 kA","at 415 V":"242 kA","at 440 V":"242 kA","at 500 V":"187 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","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":"No","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":"No","rated insulation voltage Ui":"800 V","Courant permanent assigné Iu":"25 A","Ground-Fault Monitoring Version":"Summation current formation L-conductor","Design Of The Overcurrent Release":"ETU330","protection class IP / on the front":"IP40","operating voltage / at AC / rated value":"690 V","reference code / according to IEC 81346-2":"Q","Product Extension / Optional / Motor Drive":"Yes","Adjustable response value current / lg max.":"25 A","Adjustable response value current / lg min.":"15 A","Adjustable response value current / li max.":"300 A","Adjustable response value current / li min.":"38 A","Neutral conductors / upgradeable/retrofittable":"No","Protection Function Of The Overcurrent Release":"LIG","number of CO contacts / for auxiliary contacts":"0","Switching Capacity Class Of The Circuit Breaker":"C","Max. rated operational current of the frame size":"160 A","Mechanical Service Life (Switching 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 , max.":"25 x 8 mm","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=390716&mlfb=3VA2125-7HM32-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2125-7HM32-0AA0/alternatives.json"},"ai":{"faq":[{"question":"What trip unit does 3VA2125-7HM32-0AA0 use?","answer":"An ETU330 electronic trip unit with fixed curves for line protection — no adjustable settings, no communication module."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2125-7HM32-0AA0","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/3VA2125-7HM32-0AA0 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}}