{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1225-5EF32-0BC0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1225-5EF32-0BC0","canonicalUrl":"https://aoctrl.com/siemens/3VA1225-5EF32-0BC0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1225-5EF32-0BC0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1225-5EF32-0BC0, molded case circuit breaker, 3-pole, 250 A rated at 40 °C, 121 kA breaking capacity at 415 V AC, line protection design.","salesMarkdown":"The supplied basic switch variant is 3VA12255EF320AA0. The interrupting ratings climb as voltage drops: 187 kA at 240 V, 121 kA at 415 V, 75.6 kA at 440 V, 30 kA at 500 V, and 17 kA at 690 V. If your transformer can push that much fault current, this breaker can stop it. The 250 A rating holds steady up to 50 °C. 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. Power loss is 59.5 W max — account for that heat in the enclosure calc, especially if you're stacking breakers.","metaTitle":"Siemens 3VA1225-5EF32-0BC0 SENTRON MCCB, 250A, 3-Pole, 121kA","metaDescription":"Siemens SENTRON 3VA1225-5EF32-0BC0 molded case circuit breaker, 250A rated, 3-pole, 121 kA breaking capacity at 415 V AC. Active lifecycle. Available to order against RFQ.","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":"187 kA","at 415 V":"121 kA","at 440 V":"75.6 kA","at 500 V":"30 kA","at 690 V":"17 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":"Yes","Design Of The Product":"Line protection","Communication Function":"No","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","power loss [W] / maximum":"59.5 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","Of The Supplied Basic Switch":"3VA12255EF320AA0","Design Of The Auxiliary Switch":"2 auxiliary switches HQ","Design Of The Auxiliary Release":"undervoltage release (UVR)","Ground-Fault Monitoring Version":"Without","Insulation Voltage / Rated Value":"800 V","Design Of The Overcurrent Release":"TM240","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","Of The Integrated Auxiliary Trip Unit":"3VA9608-0BB11","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":"2","Of The Integrated Auxiliary Switch/Alarm Switch":"3VA9988-0AA12","Switching Capacity Class Of The Circuit Breaker":"M","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=568667&mlfb=3VA1225-5EF32-0BC0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1225-5EF32-0BC0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1225-5EF32-0BC0 and get a price?","answer":"This part is sourced through independent distribution and quoted to order against an RFQ. Submit a request; availability and current pricing are confirmed at quote time."},{"question":"What is the interrupting capacity of this MCCB at 415 V?","answer":"121 kA at 415 V AC. That's the key rating for 400 V class distribution panels."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1225-5EF32-0BC0","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/3VA1225-5EF32-0BC0 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}}