{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1225-5EF32-0KA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1225-5EF32-0KA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1225-5EF32-0KA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1225-5EF32-0KA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1225-5EF32-0KA0, molded case circuit breaker, 3-pole, 250 A (40 °C), TM240 thermal-magnetic release, 187 kA at 240 V, shunt trip, line protection.","salesMarkdown":"The Siemens SENTRON 3VA1225-5EF32-0KA0 is a 3-pole molded case circuit breaker (MCCB) rated for line protection, carrying a continuous current of 250 A at 40 °C ambient. Breaking capacity drops as voltage rises: 121 kA at 415 V, 75.6 kA at 440 V, 30 kA at 500 V, and 17 kA at 690 V. That means this breaker is sized for 400 V-class distribution where the fault current stays under 120 kA; at 690 V the 17 kA limit still covers most industrial motor-control panels. The continuous rating holds at 250 A from 40 °C up to 50 °C, then derates to 243 A at 55 °C and 223 A at 70 °C. ## Integration notes Dimensions: 105 mm wide, 158 mm high, 70 mm deep. That's a standard 3-pole MCCB footprint for a 250 A frame — it fits a typical DIN-rail or panel-mount enclosure with a 105 mm cutout. Rated insulation voltage is 800 V, so it's fine for 480/600 V systems with margin. Operating temperature range is -25 °C to 70 °C, storage from -40 °C to 80 °C.","metaTitle":"Siemens 3VA1225-5EF32-0KA0 SENTRON MCCB, 250 A, 3-Pole, TM24","metaDescription":"Siemens SENTRON 3VA1225-5EF32-0KA0 molded case circuit breaker. 250 A rated at 40 °C, 3-pole, TM240 thermal-magnetic release. 187 kA breaking at 240 V. Active production. Sourced t","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":"Yes","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","Of The Supplied Basic Switch":"3VA12255EF320AA0","Design Of The Auxiliary Release":"shunt trip (STL)","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":"3VA9688-0BL33","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":"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=568681&mlfb=3VA1225-5EF32-0KA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1225-5EF32-0KA0/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of 3VA1225-5EF32-0KA0 at different voltages?","answer":"At 240 V it interrupts 187 kA, at 415 V it interrupts 121 kA, at 440 V it interrupts 75.6 kA, at 500 V it interrupts 30 kA, and at 690 V it interrupts 17 kA. These are the maximum fault currents the breaker can safely clear at each voltage level."},{"question":"What type of release does 3VA1225-5EF32-0KA0 have?","answer":"It uses a TM240 thermal-magnetic overcurrent release and includes a shunt trip (STL) auxiliary release for remote tripping. The TM240 provides both overload (thermal) and short-circuit (magnetic) protection."},{"question":"Where can I buy 3VA1225-5EF32-0KA0 and get current pricing?","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 price and lead time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1225-5EF32-0KA0","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/3VA1225-5EF32-0KA0 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}}