{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1225-4EF32-0BA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1225-4EF32-0BA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1225-4EF32-0BA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1225-4EF32-0BA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1225-4EF32-0BA0, molded case circuit breaker, 3-pole, 250 A at 40 °C, TM240 thermal-magnetic release, 121 kA at 240 V, undervoltage release, line protection design.","salesMarkdown":"The Siemens 3VA1225-4EF32-0BA0 is a SENTRON molded case circuit breaker (MCCB) rated 250 A at 40 °C, with a 3-pole configuration and a TM240 thermal-magnetic release. Its interrupting capacity reaches 121 kA at 240 V, 75.6 kA at 415 V, and 52.5 kA at 440 V — figures that govern selectivity and SCCR headroom in a distribution panel. The 250 A continuous rating holds across 40 °C to 50 °C without derating; above that it steps down to 243 A at 55 °C, 237 A at 60 °C, 230 A at 65 °C, and 223 A at 70 °C. For a panel that runs warm — say a packed enclosure near a drive — the 70 °C figure (223 A) is the real limit, not the catalog 250 A. The 3-pole footprint matches the standard SENTRON 3VA mounting pattern — it bolts directly onto the mounting plate or into a compatible SENTRON distribution panel. No DIN-rail clip on this frame; it is screw-fixed. ## Operating conditions and power loss The breaker has no communication function, no trip indicator, and no voltage trigger; it is a straight thermal-magnetic device with undervoltage release only.","metaTitle":"Siemens 3VA1225-4EF32-0BA0 SENTRON MCCB, 250 A, 3-Pole, 121","metaDescription":"Siemens SENTRON 3VA1225-4EF32-0BA0 molded case circuit breaker, 250 A at 40 °C, 3-pole, 121 kA at 240 V. TM240 release, undervoltage release. Sourced 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","title":"3VA1225-4EF32-0BA0","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","description":"circuit breaker 3VA1 IEC frame 250 breaking capacity class S Icu=36kA @ 415V 3-pole, line protection TM240, ATAM, In=250A overload protection Ir=175A...250A short-circuit protection Ii=5...10 x In nut keeper kit undervoltage release (UVR) 24V DC","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":"3VA12254EF320AA0","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":"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,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/e0e746c025f0cb57ca2f9eb0820b781a.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=568488&mlfb=3VA1225-4EF32-0BA0"},"ai":{"faq":[{"question":"What is the depth of 3VA1225-4EF32-0BA0?","answer":"The depth is 70 mm (2.76 in). Overall dimensions are 105 mm wide by 158 mm high by 70 mm deep."},{"question":"Does 3VA1225-4EF32-0BA0 have an undervoltage release?","answer":"Yes, it is fitted with an undervoltage release (UVR) as the auxiliary release. The breaker trips when control voltage drops below the dropout threshold."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1225-4EF32-0BA0","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/3VA1225-4EF32-0BA0 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}