{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2025-8HN42-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2025-8HN42-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA2025-8HN42-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2025-8HN42-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2 series, Molded case circuit breaker, 3VA2025-8HN42-0AA0, 4-pole, 25 A, ETU350 electronic trip unit, 440 kA at 240 V breaking capacity.","salesMarkdown":"## What this MCCB is and what it does The Siemens 3VA2025-8HN42-0AA0 is a 4-pole SENTRON molded case circuit breaker (MCCB) rated for 25 A continuous current across the full ambient range from 40 °C to 70 °C — no derating needed up to the maximum operating temperature. It carries the ETU350 electronic trip unit, which provides adjustable overload and short-circuit protection curves for line protection duty in distribution panels. ## Breaking capacity — what the ratings mean for fault clearing This MCCB delivers 440 kA breaking capacity at 240 V, 330 kA at 415 V and 440 V, 220 kA at 500 V, and 52.5 kA at 690 V. Those are the maximum fault currents the breaker can safely interrupt at each voltage level — critical for selectivity studies and SCCR compliance in the panel. The 440 kA figure at 240 V is exceptionally high, making this unit suitable for high-fault-capacity locations like transformer secondaries or large motor control centers. ## Physical fit and panel integration The 3VA2025-8HN42-0AA0 measures 86 mm deep, 140 mm wide, and 181 mm tall. It mounts into a standard MCCB cutout or on a mounting plate within the enclosure. The front face carries IP40 protection — suitable for general indoor panel environments where tools or fingers won't contact live parts. The N-conductor protection is adjustable between OFF and 100%, giving flexibility for 3- or 4-pole distribution schemes.","metaTitle":"Siemens 3VA2025-8HN42-0AA0 SENTRON 4-Pole MCCB, 25 A, ETU350","metaDescription":"Siemens 3VA2025-8HN42-0AA0 SENTRON molded case circuit breaker, 4-pole, 25 A, ETU350 trip unit. Breaking capacity 440 kA at 240 V. Current lifecycle. 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":"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":"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]":"5.51 in","Height [In]":"7.13 in","Trip Indicator":"No","Number Of Poles":"4","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":"0.5 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","Courant permanent assigné Iu":"25 A","Ground-Fault Monitoring Version":"Without","Tension assignée d'isolement Ui":"800 V","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 IEC 81346-2":"Q","Product Extension / Optional / Motor Drive":"Yes","Adjustable response value current / li max.":"300 A","Adjustable response value current / li min.":"300 A","Neutral conductors / upgradeable/retrofittable":"No","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":"100 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":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=436400&mlfb=3VA2025-8HN42-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2025-8HN42-0AA0/alternatives.json"},"ai":{"faq":[{"question":"How do I get current pricing and availability for 3VA2025-8HN42-0AA0?","answer":"Submit an RFQ through this listing. Availability and current pricing are confirmed at quote time through independent distribution channels."},{"question":"What is the breaking capacity of 3VA2025-8HN42-0AA0 at 415 V?","answer":"330 kA at 415 V, matching the rating at 440 V. At 240 V it reaches 440 kA, and at 690 V it is 52.5 kA."},{"question":"Will 3VA2025-8HN42-0AA0 drop into a panel specified around 3VA2040-8HN42-0AA0 without rewiring?","answer":"The 3VA2025-8HN42-0AA0 shares the same 4-pole frame and ETU350 trip unit family as the 3VA2040-8HN42-0AA0, but the 3VA2040 is rated for 40 A. The 25 A unit will physically fit the same mounting footprint and bus connections, though the lower continuous rating may require coordination adjustments."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2025-8HN42-0AA0","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/3VA2025-8HN42-0AA0 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}}