{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2325-0HM42-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2325-0HM42-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA2325-0HM42-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2325-0HM42-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2325-0HM42-0AA0, molded case circuit breaker, 4-pole, 250 A continuous, ETU330 electronic trip unit, 440 kA breaking capacity at 415 V AC.","salesMarkdown":"The Siemens SENTRON 3VA2325-0HM42-0AA0 is a 4-pole molded case circuit breaker rated for 250 A continuous current, designed for line protection in industrial power distribution. It carries a 440 kA breaking capacity at 415 V — enough to handle high-fault-current scenarios like large transformer secondaries or busway feeds without cascading upstream. The ETU330 electronic trip unit gives adjustable overload and short-circuit protection curves, plus ground-fault monitoring via summation current formation on L+N conductors. ## Ratings and what they mean for fit The 250 A continuous rating holds flat across the full ambient range from 40 °C to 70 °C — no derating needed in a warm enclosure. That is unusual for an MCCB this size and simplifies panel thermal calculations. The 440 kA at 415 V is the short-circuit breaking capacity; it tells you this breaker can safely interrupt a fault up to that level, which is essential for high-fault installations like main switchboards or feeder breakers close to the transformer. The 187 kA at 690 V covers 600 V class systems common in North American industrial plants. Rated insulation voltage is 800 V, so the breaker is suitable for 690 V systems with margin. The 4-pole design with adjustable N-conductor protection (OFF, 50%, or 100%) makes it flexible for both solidly-grounded and impedance-grounded networks. ## Panel integration and physical fit The 3VA2325-0HM42-0AA0 measures 248 mm high, 184 mm wide, and 110 mm deep. It mounts on a DIN rail or directly to a panel backplate via the standard MCCB footprint. The front face carries IP40 protection — suitable for enclosed switchboards where tools are the only access. Spring-cage or screw terminals accept conductors sized for 250 A; verify lug kit compatibility with your busbar system.","metaTitle":"Siemens 3VA2325-0HM42-0AA0 SENTRON MCCB, 250 A, 4-Pole, ETU3","metaDescription":"Siemens SENTRON 3VA2325-0HM42-0AA0 molded case circuit breaker, 250 A continuous, 4-pole, ETU330 release, 440 kA at 415 V. Active production. Sourced 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":"110 mm","Width":"184 mm","Height":"248 mm","Maximum":"3 000 A","Minimum":"375 A","at 415 V":"440 kA","at 690 V":"187 kA","at 40 °C":"250 A","at 45 °C":"250 A","at 50 °C":"250 A","at 55 °C":"250 A","at 60 °C":"250 A","at 65 °C":"250 A","at 70 °C":"250 A","Depth [In]":"4.33 in","Width [In]":"7.24 in","Height [In]":"9.76 in","Initial Value":"50 A","Trip Indicator":"No","Number Of Poles":"4","Voltage Trigger":"No","lifecycle_stage":"current","Full-Scale Value":"250 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":"37.5 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":"250 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; 50%; 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":"400 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":"E","Mechanical Service Life (Operating Cycles) / Typical":"20 000","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,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/ad4b9644ff5db6bf2edb958ed105bffe.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1417845&mlfb=3VA2325-0HM42-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2325-0HM42-0AA0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA2325-0HM42-0AA0 and what is the lead time?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm commitment."},{"question":"What is the breaking capacity of 3VA2325-0HM42-0AA0?","answer":"440 kA at 415 V AC and 187 kA at 690 V AC. This is the short-circuit breaking capacity (Icu) — sufficient for main feeder or high-fault switchboard applications."},{"question":"What trip unit does 3VA2325-0HM42-0AA0 use?","answer":"It uses the ETU330 electronic trip unit, which provides adjustable overload and short-circuit protection with LSI curves (long-time, short-time, instantaneous) plus ground-fault monitoring."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2325-0HM42-0AA0","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/3VA2325-0HM42-0AA0 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}}