{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1225-4EF32-0KA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1225-4EF32-0KA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1225-4EF32-0KA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1225-4EF32-0KA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1225-4EF32-0KA0, molded case circuit breaker, 3-pole, 250 A rated continuous current, line protection, TM240 overcurrent release, shunt trip (STL), IP40 front protection.","salesMarkdown":"## What this 250 A MCCB delivers in the panel It's built for line protection — meaning it sits at the feeder or main distribution point, not downstream on motor or branch circuits. The breaking capacity is 121 kA at 240 V and 75.6 kA at 415 V, so it handles high-fault utility connections without cascading upstream. ## Current derating and thermal reality Above that, it derates: 243.3 A at 55 °C, 236.5 A at 60 °C, 229 A at 65 °C, and 223 A at 70 °C. The TM240 release is fixed; there's no electronic adjustment or communication module on this variant. ## Mounting and integration notes Dimensions: 105 mm wide, 158 mm high, 70 mm deep. It's a panel-mount MCCB — no DIN-rail clip, so budget for a mounting plate and screw-down lugs. The shunt trip (STL) auxiliary release is included (order code 3VA9688-0BL33 for the integrated trip unit if you need a spare). No auxiliary contacts, undervoltage release, or ground-fault monitoring on this build. If you need those, you're looking at a different version of the 3VA platform.","metaTitle":"Siemens 3VA1225-4EF32-0KA0 SENTRON MCCB, 250 A, 3-Pole, Line","metaDescription":"Siemens SENTRON 3VA1225-4EF32-0KA0 molded case circuit breaker, 250 A rated continuous current, 3-pole, line protection. Breaking capacity 121 kA at 240 V. Active production. Quote","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","at 240 V":"121 kA","at 415 V":"75.6 kA","at 440 V":"25 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":"243.3 A","at 60 °C":"236.5 A","at 65 °C":"229 A","at 70 °C":"223 A","Trip indicator":"No","Number of poles":"3","Product version":"Line protection","Voltage trigger":"Yes","lifecycle_stage":"current","Product brand name":"SENTRON","Product designation":"Molded case circuit breaker","Latching - endurance":"15 000","Undervoltage Release":"No","Communication Function":"No","Phase failure detection":"No","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","Auxiliary contact version":"Without","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","Rated continuous current Iu":"250 A","Rated insulation voltage Ui":"800 V","Design of the auxiliary release":"Shunt trip (STL)","Ground fault monitoring version":"Without","Of The Integrated Auxiliary Trip":"3VA9688-0BL33","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","Reference code / acc. to DIN EN 81346-2":"Q","Adjustable response value time / tr max.":"1","Adjustable response value time / tr min.":"1","Max. rated operational voltage Ue with DC":"500 V","Undervoltage Release With Leading Contact":"No","Product extension / optional / motor drive":"Yes","Adjustable response value current / Ir max.":"250 A","Adjustable response value current / li max.":"2 500 A","Adjustable response value current / li min.":"1 250 A","Adjustable response value current / lr min.":"175 A","Neutral conductors / upgradeable/retrofittable":"No","Number of CO contacts / for auxiliary contacts":"0","Protective function of the overcurrent release":"LI","Switching capacity class of the circuit breaker":"S","Max. rated operational current of the frame size":"250 A","Max. rated operational voltage Ue with AC 50/60Hz":"690 V","Type of electrical connection / for main current circuit":"lug terminal","Arrangement of electrical connectors / for main current circuit":"Front terminal","Type of connectable conductor cross-section, connection screw, width x thickness , max.":"25 x 8","Type of connectable conductor cross-section, connection screw, width x thickness , min.":"13 x 1"}},"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=568503&mlfb=3VA1225-4EF32-0KA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1225-4EF32-0KA0/alternatives.json"},"ai":{"faq":[{"question":"Who supplies 3VA1225-4EF32-0KA0 and how is it quoted for volume purchases?","answer":"This part is supplied through independent industrial-automation distribution. It is quoted to order against an RFQ; availability and current pricing are confirmed at quote time."},{"question":"What are the physical dimensions of 3VA1225-4EF32-0KA0?","answer":"Width 105 mm, height 158 mm, depth 70 mm. Panel-mount design; no DIN-rail adapter."},{"question":"What compliance documentation does this breaker carry?","answer":"The part is designed to DIN EN 81346-2 (reference code Q). It carries IP40 front protection. For specific RoHS, REACH, UL, or IEC declarations, request the manufacturer's compliance documentation at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1225-4EF32-0KA0","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/3VA1225-4EF32-0KA0 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}}