{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2025-4HM32-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2025-4HM32-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA2025-4HM32-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2025-4HM32-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2025-4HM32-0AA0, molded case circuit breaker, 3-pole, 25 A, ETU330 electronic trip unit, 121 kA at 240 V AC, line protection version.","salesMarkdown":"It's a line protection version — meaning it's built for feeder and distribution circuits, not motor-starting duty. The 121 kA breaking capacity at 240 V AC is what you look at first for high-fault panels; at 415 V it still holds 75.6 kA, and it's rated up to 690 V AC operating voltage. That's a serious interrupting rating for a 25 A frame. At 415 V it's 75.6 kA; at 440 V the same; at 500 V it drops to 52.5 kA; at 690 V it's 3 kA. That last figure tells you this breaker is not for 690 V distribution unless your available fault current is very low. For most 480 V panels in North America or 400 V in Europe, the 75.6 kA rating covers high-capacity transformer feeds. ## Current rating and thermal performance That's unusual for a 25 A frame; most breakers start stepping down at 50 °C. The power loss is only 0.84 W maximum, so heat buildup in a dense panel is minimal. Dimensions are 105 mm wide, 181 mm tall, and 86 mm deep — a standard 3-pole MCCB footprint for the SENTRON 3VA platform.","metaTitle":"Siemens 3VA2025-4HM32-0AA0 SENTRON MCCB, 25A, 3-Pole, 121kA","metaDescription":"Siemens SENTRON 3VA2025-4HM32-0AA0 molded case circuit breaker, 25 A, 3-pole, ETU330 release, 121 kA at 240 V AC. Current production. Available to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"Depth":"86 mm","Width":"105 mm","title":"3VA2025-4HM32-0AA0","Height":"181 mm","at 240 V":"121 kA","at 415 V":"75.6 kA","at 440 V":"75.6 kA","at 500 V":"52.5 kA","at 690 V":"3 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 100 breaking capacity class S Icu=36kA @ 415V 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 nut keeper kit","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":"0.84 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":"S","Max. rated operational current of the frame size":"100 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,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/ca68931e4b04d4a6399f44236e73b591.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=289776&mlfb=3VA2025-4HM32-0AA0"},"ai":{"faq":[{"question":"What is the breaking capacity of 3VA2025-4HM32-0AA0 at 240 V?","answer":"121 kA at 240 V AC. At 415 V and 440 V it's 75.6 kA, at 500 V it's 52.5 kA, and at 690 V it's 3 kA."},{"question":"What trip unit does this MCCB use?","answer":"It uses the ETU330 electronic trip unit, which provides adjustable overload and short-circuit protection settings."},{"question":"Where can I buy 3VA2025-4HM32-0AA0?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"Does the 3VA2025-4HM32-0AA0 have a ground-fault monitoring function?","answer":"Yes, it is a summation current formation version on the L-conductor — it monitors for ground faults by summing the phase currents."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2025-4HM32-0AA0","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/3VA2025-4HM32-0AA0 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}}