{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2025-8HM46-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2025-8HM46-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA2025-8HM46-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2025-8HM46-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2025-8HM46-0AA0, molded case circuit breaker, 4-pole, 25 A rated current, ETU330 electronic trip unit, interrupting capacity 440 kA at 240 V.","salesMarkdown":"## What this 4-pole MCCB does on the line The Siemens SENTRON 3VA2025-8HM46-0AA0 is a 4-pole molded case circuit breaker (MCCB) rated at 25 A continuous current (Iu) across the full ambient range from 40 °C up to 70 °C — no derating needed as the panel warms up. That flat thermal curve is unusual for an MCCB this size and saves you the head-scratching when the enclosure runs hot. That means you can dial in coordination with downstream breakers without swapping the whole device. The interrupting capacity hits 440 kA at 240 V, 330 kA at 415 V, and still 52.5 kA at 690 V — high enough for most distribution panels without needing a current-limiting upstream fuse. ## Ground-fault and neutral configuration This version includes ground-fault monitoring via summation current formation on L + N conductors — it measures the vector sum of line and neutral currents to detect leakage. The N-conductor protection is adjustable: you can set it to OFF (no neutral protection) or 100% of the phase rating, which is handy when you're feeding a load that doesn't need full neutral protection. If you need remote trip indication or power monitoring, you'd add external accessories. The 3VA2025-8HM46-0AA0 measures 140 mm wide, 181 mm tall, and 86 mm deep — a standard 4-pole MCCB footprint that drops into Siemens SENTRON distribution panels and most DIN-rail or screw-mount enclosures. Power loss is just 0.5 W maximum, so heat buildup in a dense cabinet is minimal.","metaTitle":"Siemens 3VA2025-8HM46-0AA0 SENTRON MCCB, 25A, 4-Pole, 440kA","metaDescription":"Siemens SENTRON 3VA2025-8HM46-0AA0 molded case circuit breaker. 25A, 4-pole, ETU330 release. Interrupting capacity 440kA at 240V. Current-production. Quoted 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":"Summation current formation L + N conductor","Tension assignée d'isolement Ui":"800 V","Design Of The Overcurrent Release":"ETU330","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 / 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":"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":"double-sided 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/fa9f127bc1fac0b466da06b360db7f04.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=479981&mlfb=3VA2025-8HM46-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2025-8HM46-0AA0/alternatives.json"},"ai":{"faq":[{"question":"What is the interrupting capacity of 3VA2025-8HM46-0AA0 at different voltages?","answer":"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. These are symmetrical RMS values — high enough to handle most fault scenarios without fuses upstream."},{"question":"Does 3VA2025-8HM46-0AA0 include ground-fault protection?","answer":"Yes, it has ground-fault monitoring using summation current measurement on L + N conductors. The N-conductor protection is adjustable (OFF or 100% of phase rating)."},{"question":"Where can I buy 3VA2025-8HM46-0AA0 and how is it quoted?","answer":"We source this current-production Siemens MCCB and quote it to order against an RFQ. Availability and current pricing are confirmed at quote time through our independent distribution channels."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2025-8HM46-0AA0","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/3VA2025-8HM46-0AA0 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}}