{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2225-0KP42-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2225-0KP42-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA2225-0KP42-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2225-0KP42-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2225-0KP42-0AA0, molded case circuit breaker, 4-pole, 250 A continuous, ETU850 electronic trip unit, 440 kA breaking capacity at 415 V AC.","salesMarkdown":"The 3VA2225-0KP42-0AA0: Breaking capacity is 440 kA at 415 V AC and 187 kA at 690 V AC — that's enough to handle high-fault utility feeds or transformer secondaries without cascading upstream breakers. The ETU850 trip unit includes a communication function and other measurement functions, meaning it can talk to a BMS or PLC for power monitoring and trip event logging — not just a dumb thermal-magnetic breaker. ## Thermal derating — the real-world current rating This breaker holds its full 250 A rating from 40 °C up through 50 °C ambient. At 55 °C it derates to 238 A, at 60 °C to 225 A, and at 70 °C to 200 A. If you're stuffing this into a hot panel next to drives or transformers, use the 55 °C or 60 °C column for your load calculation — not the nameplate 250 A. Maximum power loss is 48 W, so plan for that heat inside the enclosure. That's a standard SENTRON 4-pole frame size — it'll drop into existing 3VA panel cutouts and busbar arrangements without re-drilling. ## N-conductor protection and adjustments Neutral protection adjustable: OFF or 20 % to 100 % of phase current. There's no undervoltage release and no ground-fault monitoring built in — those are add-on accessories if you need them. The trip indicator is also absent on this variant, so you'll need a remote indication accessory or rely on the communication function for trip status.","metaTitle":"Siemens 3VA2225-0KP42-0AA0 SENTRON MCCB, 250 A, 4-Pole, ETU8","metaDescription":"Siemens SENTRON 3VA2225-0KP42-0AA0 molded case circuit breaker, 250 A continuous, 4-pole, ETU850 trip unit, 440 kA at 415 V. Active production. Quoted to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"Depth":"86 mm","Width":"140 mm","Height":"181 mm","Maximum":"2 500 A","Minimum":"375 A","at 415 V":"440 kA","at 690 V":"187 kA","at 40 °C":"250 A","at 45 °C":"250 A","at 50 °C":"250 A","at 55 °C":"238 A","at 60 °C":"225 A","at 65 °C":"213 A","at 70 °C":"200 A","Depth [In]":"3.39 in","Width [In]":"5.51 in","Height [In]":"7.13 in","Trip Indicator":"No","Number Of Poles":"4","Voltage Trigger":"No","lifecycle_stage":"current","Product Brand Name":"SENTRON","Product Designation":"Molded case circuit breaker","Undervoltage Release":"No","Design Of The Product":"Line protection","Communication Function":"Yes","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","power loss [W] / maximum":"48 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"Yes","Ground-Fault Monitoring Version":"Without","Continuous Current / Rated Value":"250 A","Insulation Voltage / Rated Value":"800 V","Design Of The Overcurrent Release":"ETU850","protection class IP / on the front":"IP40","design of the N-conductor protection":"adjustable OFF; 20% to 100%","Product Function / Grounding Protection":"No","operating voltage / at AC / rated value":"690 V","reference code / according to IEC 81346-2":"Q","Continuous Current / Rated Value / Maximum":"250 A","Product Extension / Optional / Motor Drive":"Yes","Protection Function Of The Overcurrent Release":"LSI","number of CO contacts / for auxiliary contacts":"0","Switching Capacity Class Of The Circuit Breaker":"E","Mechanical Service Life (Operating Cycles) / Typical":"25 000","Type Of Electrical Connection / For Main Current Circuit":"on both sides nut keeper kit","Arrangement Of Electrical Connectors / For Main Current Circuit":"Front terminal"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/6a7c0d29262bf1366bc093fc9653b1e6.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1417839&mlfb=3VA2225-0KP42-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2225-0KP42-0AA0/alternatives.json"},"ai":{"faq":[{"question":"What trip unit does this MCCB use?","answer":"It uses the ETU850 electronic trip unit with communication and measurement functions, adjustable overload and short-circuit protection."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2225-0KP42-0AA0","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/3VA2225-0KP42-0AA0 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}}