{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1225-6GF42-0KA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1225-6GF42-0KA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1225-6GF42-0KA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1225-6GF42-0KA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1225-6GF42-0KA0, molded case circuit breaker, 250 A fixed, 4-pole, 220 kA at 240 V, TM240 thermal-magnetic release, shunt trip (STL), line protection design.","salesMarkdown":"## 250 A fixed, 4-pole — line protection with shunt trip Its interrupting capacity reaches 220 kA at 240 V, 154 kA at 415 V, and 17 kA at 690 V — figures that define the available fault current it can safely clear without upstream coordination issues. The TM240 thermal-magnetic release provides overload and short-circuit protection, while the integrated shunt trip (STL) allows remote tripping via a control signal. At 250 A continuous, the breaker carries a maximum power loss of 57 W. The thermal derating curve is published: full 250 A up to 50 °C, then 243 A at 55 °C, 237 A at 60 °C, 230 A at 65 °C, and 223 A at 70 °C. For a panel builder, that means the breaker can be mounted in a standard enclosure without forced cooling at ambient up to 50 °C, but above that, the connected load must be reduced per the curve. The shunt trip release (STL) is factory-installed; no field retrofit required. ## Interrupting capacity by voltage — selectivity planning The interrupting ratings are specified at five voltage levels: 220 kA at 240 V, 154 kA at 415 V, 75.6 kA at 440 V, 30 kA at 500 V, and 17 kA at 690 V. A site electrical engineer sizing for a 415 V distribution board with a 100 kA prospective fault current has 54 kA of headroom — enough to maintain selectivity with downstream breakers without cascading.","metaTitle":"Siemens 3VA1225-6GF42-0KA0 SENTRON MCCB, 250 A, 4-Pole, 220","metaDescription":"Siemens SENTRON 3VA1225-6GF42-0KA0 molded case circuit breaker, 250 A fixed, 4-pole, 220 kA at 240 V. TM240 release, shunt trip. Current lifecycle stage. Quoted 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":"140 mm","Height":"158 mm","Maximum":"250 A","Minimum":"250 A","at 240 V":"220 kA","at 415 V":"154 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]":"5.51 in","Height [In]":"6.22 in","Trip Indicator":"No","Number Of Poles":"4","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":"3VA12256GF420AA0","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","design of the N-conductor protection":"100%","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":"600 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":"H","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=568879&mlfb=3VA1225-6GF42-0KA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1225-6GF42-0KA0/alternatives.json"},"ai":{"faq":[{"question":"How do I get current pricing and availability for 3VA1225-6GF42-0KA0?","answer":"Submit an RFQ through this listing. Pricing and stock are confirmed at quote time through independent distribution channels."},{"question":"What are the key interrupting ratings for this MCCB?","answer":"220 kA at 240 V, 154 kA at 415 V, 75.6 kA at 440 V, 30 kA at 500 V, and 17 kA at 690 V. These are the maximum fault currents the breaker can safely interrupt at each voltage level."},{"question":"What is the thermal derating above 50 °C?","answer":"The breaker carries 250 A up to 50 °C. Above that: 243 A at 55 °C, 237 A at 60 °C, 230 A at 65 °C, and 223 A at 70 °C. No derating is needed below 50 °C."},{"question":"Does this breaker include a shunt trip?","answer":"Yes. The design of the auxiliary release is a shunt trip (STL), factory-installed. It allows remote tripping via a control voltage signal."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1225-6GF42-0KA0","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/3VA1225-6GF42-0KA0 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}}