{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2125-8HN46-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2125-8HN46-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA2125-8HN46-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2125-8HN46-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2125-8HN46-0AA0, molded case circuit breaker, 4-pole, 25 A, ETU350 trip unit, line protection, 440 kA at 240 V.","salesMarkdown":"The Siemens SENTRON 3VA2125-8HN46-0AA0 is a 4-pole molded case circuit breaker (MCCB) rated for a continuous current of 25 A across the full ambient temperature range from 40 °C to 70 °C — no derating needed up to that ceiling. It's built for line protection duty, meaning it guards feeders and downstream distribution against short-circuit and overload faults. The interrupting capacity hits 440 kA at 240 V and still holds 330 kA at 415 V and 440 V, so it handles high-fault scenarios common in industrial switchboards and transformer secondaries. The ETU350 electronic trip unit gives you adjustable long-time pickup and delay (tr adjustable from 0.5 to 17 seconds), plus configurable N-conductor protection (OFF or 100%). That adjustability means you can coordinate selectivity with downstream breakers without swapping hardware — handy when you're freezing a BOM and need to dial in trip curves later. The IP40 front protection means it's fine in enclosed panels — not for washdown areas, but that's typical for switchgear. Mounting is via screw-on lugs or plug-in base; no DIN-rail snap-on here, so plan for a dedicated mounting plate.","metaTitle":"Siemens 3VA2125-8HN46-0AA0 SENTRON MCCB, 25 A, 4-Pole, ETU35","metaDescription":"Siemens SENTRON 3VA2125-8HN46-0AA0 molded case circuit breaker, 25 A, 4-pole, ETU350 release. Rated 440 kA at 240 V. Active production. Available 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":"140 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":"53 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","Latching - endurance":"20 000","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":"-40 °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":"ETU350","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","Adjustable response value time / tsd max.":"0.4 s","Adjustable response value time / tsd min.":"0.02 s","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.":"300 A","Adjustable response value current / lr min.":"10 A","Adjustable response value current / Isd max.":"250 A","Adjustable response value current / Isd min.":"38 A","Neutral conductors / upgradeable/retrofittable":"No","Number of CO contacts / for auxiliary contacts":"0","Protective function of the overcurrent release":"LSI","Switching capacity class of the circuit breaker":"L","Max. rated operational current of the frame size":"160 A","Max. rated operational voltage Ue with AC 50/60Hz":"690 V","Type of electrical connection / for main current circuit":"box terminal","Arrangement of electrical connectors / for main current circuit":"Front terminal","Type of connectable conductor cross-section, round conductor terminal, stranded":"1 x (6-120 mm²)"}},"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=474015&mlfb=3VA2125-8HN46-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2125-8HN46-0AA0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA2125-8HN46-0AA0 and how do I get a price?","answer":"This part is sourced to order against an RFQ through independent industrial distribution. Submit a request for quote; current pricing and availability are confirmed at quote time."},{"question":"What are the key ratings for the 3VA2125-8HN46-0AA0?","answer":"Rated 25 A continuous current (no derating up to 70 °C), 4-pole, interrupting capacity of 440 kA at 240 V and 330 kA at 415 V. Insulation voltage rating is 800 V."},{"question":"What dimensions does the 3VA2125-8HN46-0AA0 have?","answer":"Width 140 mm, height 181 mm, depth 86 mm."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2125-8HN46-0AA0","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/3VA2125-8HN46-0AA0 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}}