{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2025-8HM42-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2025-8HM42-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA2025-8HM42-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2025-8HM42-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2025-8HM42-0AA0, molded case circuit breaker, 4-pole, 25 A rated continuous current, 440 kA interrupting at 240 V, line protection design.","salesMarkdown":"The adjustable thermal-magnetic trip range is 38 A minimum to 300 A maximum — that's the short-circuit and overload pickup window, not the continuous rating. Interrupting capacity drops with system voltage: 440 kA at 240 V, 330 kA at 415 V and 440 V, 220 kA at 500 V, and 52.5 kA at 690 V (–). Ground-fault monitoring is built in via summation current formation on L + N conductor — that's a residual-current detection method that sums phase and neutral currents; if they don't cancel, it trips. No undervoltage release and no communication function, so this is a straight thermal-magnetic breaker with ground-fault, not a smart or remote-trip unit. Dimensions are 140 mm wide, 181 mm high, 86 mm deep — standard MCCB footprint for a 4-pole 25 A frame.","metaTitle":"Siemens 3VA2025-8HM42-0AA0 SENTRON MCCB, 25 A, 4-Pole, 440 k","metaDescription":"Siemens SENTRON 3VA2025-8HM42-0AA0 molded case circuit breaker, 25 A rated, 4-pole, 440 kA interrupting at 240 V. Current lifecycle. Quoted to order against RFQ.","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","title":"3VA2025-8HM42-0AA0","Height":"181 mm","Maximum":"300 A","Minimum":"38 A","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","description":"circuit breaker 3VA2 IEC frame 100 breaking capacity class L Icu=150kA @ 415V 4-pole, line protection ETU330, LIG, In=25A overload protection Ir=10A...25A short-circuit protection Ii=1.5...12 x In N conductor protection adjustable (OFF, 100%) ground-fault protection Ig=0.6...1 x In= tg=0.1/0.3s nut keeper kit","Initial Value":"15 A","Trip Indicator":"No","Number Of Poles":"4","Voltage Trigger":"No","lifecycle_stage":"current","Full-Scale Value":"25 A","Product Brand Name":"SENTRON","Product Designation":"Molded case circuit breaker","Undervoltage Release":"No","Design Of The Product":"Line protection","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","Ground-Fault Monitoring Version":"Summation current formation L + N conductor","Continuous Current / Rated Value":"25 A","Insulation Voltage / Rated Value":"800 V","Design Of The Overcurrent Release":"ETU330","protection class IP / on the front":"IP40","design of the N-conductor protection":"adjustable OFF; 100%","Product Function / Grounding Protection":"Yes","operating voltage / at AC / rated value":"690 V","reference code / according to IEC 81346-2":"Q","Continuous Current / Rated Value / Maximum":"100 A","Product Extension / Optional / Motor Drive":"Yes","Protection Function Of The Overcurrent Release":"LIG","number of CO contacts / for auxiliary contacts":"0","Switching Capacity Class Of The Circuit Breaker":"L","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"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/b03954ca25f59274c69121f25e578d8d.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=531120&mlfb=3VA2025-8HM42-0AA0"},"ai":{"faq":[{"question":"What is 3VA2025-8HM42-0AA0's listed depth?","answer":"The depth is 86 mm, which fits standard shallow enclosures without gland-plate conflicts."},{"question":"Will 3VA2025-8HM42-0AA0 drop into a panel specified around 3VA2125-8KQ42-0AA0 without rewiring?","answer":"Both are 4-pole SENTRON MCCBs with the same frame dimensions (140 mm wide, 181 mm high, 86 mm deep), so mechanical fit is identical. The 3VA2125-8KQ42-0AA0 is a higher-current variant; verify the trip rating matches your load before swapping."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2025-8HM42-0AA0","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/3VA2025-8HM42-0AA0 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}}