{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2125-6HL42-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2125-6HL42-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA2125-6HL42-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2125-6HL42-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2125-6HL42-0AA0, molded case circuit breaker, 4-pole, 25 A, line protection, ETU320 release, breaking capacity 242 kA at 240 V.","salesMarkdown":"This MCCB delivers 242 kA at 240 V, 187 kA at 415 V and at 440 V, 121 kA at 500 V, and 3.8 kA at 690 V. At 415 V, 187 kA covers nearly any industrial transformer secondary or high-fault panel bus; the drop to 3.8 kA at 690 V means it's not intended for 690 V main feeders, but for 400/415 V distribution it has headroom to spare. The 4-pole width (140 mm) is wider than a 3-pole unit; verify your busbar spacing and enclosure depth before committing the BOM. An optional motor drive can be added as a product extension for remote tripping or re-closing schemes.","metaTitle":"Siemens 3VA2125-6HL42-0AA0 SENTRON MCCB, 25 A, 4-Pole, 242 k","metaDescription":"Siemens 3VA2125-6HL42-0AA0 SENTRON molded case circuit breaker, 25 A rated current, 4 poles, line protection, ETU320 release, breaking capacity 242 kA at 240 V. Current production.","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","at 240 V":"242 kA","at 415 V":"187 kA","at 440 V":"187 kA","at 500 V":"121 kA","at 690 V":"3.8 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]":"3.4 in","Width [in]":"5.5 in","Height [in]":"7.1 in","Number of poles":"4","Product version":"Line protection","lifecycle_stage":"current","Product brand name":"SENTRON","Product designation":"Molded case circuit breaker","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 continuous current Iu":"25 A","Rated insulation voltage Ui":"800 V","Ground fault monitoring version":"Without","Design of the overcurrent release":"ETU320","Protection class IP / on the front":"IP40","Design of the N-conductor protection":"adjustable OFF; 100%","Reference code / acc. to DIN EN 81346-2":"Q","Adjustable response value time / tr max.":"17","Adjustable response value time / tr min.":"0.5","Product extension / optional / motor drive":"Yes","Adjustable response value current / Ir max.":"25 A","Adjustable response value current / li max.":"300 A","Adjustable response value current / li min.":"38 A","Adjustable response value current / lr min.":"10 A","Neutral conductors / upgradeable/retrofittable":"No","Number of CO contacts / for auxiliary contacts":"0","Protective function of the overcurrent release":"LI","Switching capacity class of the circuit breaker":"H","Max. rated operational current of the frame size":"160 A","Max. rated operational voltage Ue with AC 50/60Hz":"690 V","Mechanical service life (switching cycles) / typical":"20 000","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 8.5 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=181033&mlfb=3VA2125-6HL42-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2125-6HL42-0AA0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA2125-6HL42-0AA0 and how do I get a price?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Submit a request for quote — availability and current pricing are confirmed at quote time."},{"question":"What is the breaking capacity of 3VA2125-6HL42-0AA0 at 415 V?","answer":"It is rated 187 kA at 415 V, which covers most industrial transformer secondary faults."},{"question":"Does the 3VA2125-6HL42-0AA0 require derating at elevated ambient temperatures?","answer":"No — the rated continuous current of 25 A holds from 40 °C through 70 °C with no derating step."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2125-6HL42-0AA0","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/3VA2125-6HL42-0AA0 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}}