{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1225-4EE32-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1225-4EE32-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1225-4EE32-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1225-4EE32-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON series, molded case circuit breaker, 3VA1225-4EE32-0AA0, 250 A, 3-pole, TM220 thermal-magnetic release, 121 kA breaking capacity at 240 V AC.","salesMarkdown":"The Siemens 3VA1225-4EE32-0AA0 is a SENTRON molded case circuit breaker (MCCB) rated for 250 A continuous at 40 °C, in a 3-pole configuration, designed specifically for line protection in distribution panels. This breaker delivers 121 kA breaking capacity at 240 V AC, 75.6 kA at 415 V, 52.5 kA at 440 V, 17 kA at 500 V, and 11.9 kA at 690 V. For a panel builder, the 121 kA at 240 V means it can sit at the main service entrance on a 240 V delta system with a high available fault current — no need for a current-limiting fuse upstream. At 415 V, the 75.6 kA figure still covers most industrial transformer secondary faults. The 690 V rating (11.9 kA) is lower but still adequate for 690 V motor control centers where the transformer impedance limits fault current. ## Thermal Derating — Don't Oversize the Panel The 250 A rating holds flat from 40 °C through 50 °C ambient. Above that, it derates: 243 A at 55 °C, 237 A at 60 °C, 230 A at 65 °C, and 223 A at 70 °C. The 57 W maximum power loss at rated current means that heat has to be managed inside the enclosure; a 250 A breaker dumping 57 W into a small box will raise the internal temperature by several degrees, so factor that into your thermal simulation. The breaker measures 105 mm wide, 158 mm high, and 70 mm deep. The 105 mm width for a 3-pole frame is standard for this class; it will fit Siemens 3VA mounting accessories and busbar systems.","metaTitle":"Siemens 3VA1225-4EE32-0AA0 SENTRON MCCB, 250 A, 3-Pole, 121","metaDescription":"Siemens SENTRON 3VA1225-4EE32-0AA0 molded case circuit breaker, 250 A rated, 3-pole, TM220 release, 121 kA breaking at 240 V. Active production, sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"Depth":"70 mm","Width":"105 mm","Height":"158 mm","Maximum":"0 A","Minimum":"0 A","at 240 V":"121 kA","at 415 V":"75.6 kA","at 440 V":"52.5 kA","at 500 V":"17 kA","at 690 V":"11.9 kA","at 40 °C":"250 A","at 45 °C":"250 A","at 50 °C":"250 A","at 55 °C":"243 A","at 60 °C":"237 A","at 65 °C":"230 A","at 70 °C":"223 A","Depth [In]":"2.76 in","Width [In]":"4.13 in","Height [In]":"6.22 in","Trip Indicator":"No","Number Of Poles":"3","Voltage Trigger":"No","lifecycle_stage":"current","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":"57 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","Ground-Fault Monitoring Version":"Without","Insulation Voltage / Rated Value":"800 V","Design Of The Overcurrent Release":"TM220","Design Of Short-Circuit Protection":"For switching power values in DC networks, see the 3VA molded case circuit breaker device manual; link to be found under Service & Support in the last chapter","protection class IP / on the front":"IP40","Product Function / Grounding Protection":"No","operating voltage / at AC / rated value":"690 V","operating voltage / at DC / rated value":"500 V","reference code / according to IEC 81346-2":"Q","Product Extension / Optional / Motor Drive":"Yes","Protection Function Of The Overcurrent Release":"LI","number of CO contacts / for auxiliary contacts":"0","Switching Capacity Class Of The Circuit Breaker":"S","Mechanical Service Life (Operating Cycles) / Typical":"20 000","Type Of Electrical Connection / For Main Current Circuit":"nut keeper kit on both ends","Arrangement Of Electrical Connectors / For Main Current Circuit":"Front terminal"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=690394&mlfb=3VA1225-4EE32-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1225-4EE32-0AA0/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of 3VA1225-4EE32-0AA0 at 240 V?","answer":"121 kA at 240 V AC, which is high enough for main service entrance duty on most low-voltage systems. At 415 V it's 75.6 kA, at 440 V it's 52.5 kA, at 500 V it's 17 kA, and at 690 V it's 11.9 kA."},{"question":"How does 3VA1225-4EE32-0AA0 compare to 3VA1112-5EE32-0AA0?","answer":"The 3VA1112-5EE32-0AA0 is a lower-current variant in the same SENTRON 3VA platform. The 3VA1225-4EE32-0AA0 is rated for 250 A versus the 3VA1112's lower rating, and it carries the same TM220 release type and 3-pole configuration. Physical dimensions are identical — 105 mm wide, 158 mm high, 70 mm deep — so it will drop into the same panel footprint and busbar system without rewiring, provided the busbars and upstream protection are sized for 250 A."},{"question":"Where can I buy 3VA1225-4EE32-0AA0 and get current pricing?","answer":"This part is sourced to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — send an RFQ with your quantity and target delivery window."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1225-4EE32-0AA0","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/3VA1225-4EE32-0AA0 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}}