{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2325-8HM42-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2325-8HM42-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA2325-8HM42-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2325-8HM42-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2 series, molded case circuit breaker (MCCB), 3VA2325-8HM42-0AA0, 4-pole, 250 A rated, line protection, 110 mm depth.","salesMarkdown":"It sits in the 3VA2 family — the compact, high-performance frame that replaced the 3VL series. At 250 A continuous rating and 4 poles, this breaker handles three-phase plus neutral loads in a single enclosure, sized for main or large feeder duty. ## Rated current and thermal derating — what the flat curve means That is unusual — most MCCBs start derating above 40 °C. Here, the breaker delivers full 250 A in a hot panel or outdoor enclosure without needing an upsized frame. The adjustable thermal-magnetic trip unit covers 375 A minimum to 3 000 A maximum short-circuit release, so the same breaker body can be tuned for different feeder sizes by swapping the trip pack. ## Short-circuit withstand — the number that decides the bus rating Short-circuit breaking capacity is given per voltage level, and this is the spec that determines whether the breaker clears a fault without upstream coordination failure. At 240 V it interrupts 440 kA; at 415 V and 440 V, 330 kA; at 500 V, 220 kA; and at 690 V, 52.5 kA. The 690 V figure is the one to check for 600 V class industrial systems — 52.5 kA is high enough for most secondary distribution but not for a main service entrance with a utility transformer rated above 2 MVA. ## Ground-fault and panel fit This version includes ground-fault monitoring via summation current formation on L + N conductor — it sums the phase and neutral currents and trips if the vector sum exceeds the threshold. That makes it suitable for solidly-grounded or resistance-grounded systems where ground-fault protection is required by code. Panel dimensions are 248 mm high, 184 mm wide, 110 mm deep — standard 4-pole MCCB footprint for a 250 A frame.","metaTitle":"Siemens 3VA2325-8HM42-0AA0 SENTRON MCCB, 250 A, 4-Pole, 110","metaDescription":"Siemens SENTRON 3VA2325-8HM42-0AA0 molded case circuit breaker, 250 A rated, 4-pole, line protection. 440 kA at 240 V. Flat derating to 70 °C. Available to order.","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 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":"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":"L","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=234411&mlfb=3VA2325-8HM42-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2325-8HM42-0AA0/alternatives.json"},"ai":{"faq":[{"question":"What is the continuous current rating and does it derate at high temperature?","answer":"Rated 250 A continuous, and it holds that rating flat from 40 °C to 70 °C ambient (–) — no derating required in hot enclosures."},{"question":"What short-circuit capacity does this breaker have at 480 V / 690 V?","answer":"At 440 V it interrupts 330 kA; at 500 V, 220 kA; at 690 V, 52.5 kA. The 690 V figure governs 600 V class industrial systems."},{"question":"Where can I buy 3VA2325-8HM42-0AA0 and what is the lead time?","answer":"This part is sourced to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for your quantity and delivery window."},{"question":"Will 3VA2325-8HM42-0AA0 drop into a panel specified for 3VA2163-8HM32-0AA0?","answer":"Both are 4-pole SENTRON MCCBs in the same 3VA2 frame family, so the mounting footprint and bus-bar centers are identical. The 3VA2325-8HM42-0AA0 is a higher-rated variant (250 A vs the 3VA2163's lower rating), so it is physically interchangeable as long as the bus and cable sizing support the higher current."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2325-8HM42-0AA0","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/3VA2325-8HM42-0AA0 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:15:54.622Z","lastPublished":"2026-09-02T08:15:54.622Z","indexable":true}}