{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2225-6KQ42-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2225-6KQ42-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA2225-6KQ42-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2225-6KQ42-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2225-6KQ42-0AA0, 4-pole molded case circuit breaker, 250 A rated current, ETU860 electronic release, line protection, 242 kA breaking capacity at 240 V AC.","salesMarkdown":"## What this 250 A MCCB does for the panel It is designated for line protection — meaning the primary role is feeder and main switchboard protection, not motor-circuit duty. The 250 A rating holds flat from 40 °C through 50 °C ambient, then derates to 238 A at 55 °C, 225 A at 60 °C, 213 A at 65 °C, and 200 A at 70 °C. That thermal performance is what you need to check against your panel's internal temperature rise; in a hot rolling-mill enclosure near the furnace, the 70 °C ceiling gives you the headroom most commercial-temp breakers lack. Breaking capacity is the headline: 242 kA at 240 V AC, 187 kA at both 415 V and 440 V, 121 kA at 500 V, and 4.5 kA at 690 V. The 4.5 kA at 690 V still covers most 690 V distribution faults, but that figure tells you the arc extinction is voltage-limited; do not assume the same interrupting rating at 690 V as at 240 V. The ETU860 release is a communicable electronic trip unit — it supports power monitoring and can report trip events, load current, and energy data over the SENTRON communication bus. The N-conductor protection is adjustable from OFF to 100% in 20% steps, which matters for 4-wire systems where the neutral may need a lower pickup than the phase conductors. Ground-fault monitoring uses summation-current sensing on L+N, so it catches leakage without a separate CT. No undervoltage release or voltage trigger is fitted; if you need UVR or shunt trip, you add an accessory module. Dimensions: 181 mm height, 140 mm width, 86 mm depth. The 140 mm width on a 4-pole breaker is standard for this frame size — it fits the same panel cutout as other 3VA2 frame breakers. The 48 W maximum power loss is the heat you must vent from the panel — at 250 A load, that is the I²R plus trip-unit dissipation. For a panel builder, that means checking the thermal rise against the derating curve above 50 °C. ## Comparison with a sibling — 3VA2225-5JQ32-0AK0 The closest functional sibling is the 3VA2225-5JQ32-0AK0. Both are 4-pole 250 A 3VA2 frame breakers. The difference is the trip unit: this seed carries the ETU860 (communicable, with power monitoring), while the sibling carries a different release.","metaTitle":"Siemens 3VA2225-6KQ42-0AA0 SENTRON MCCB, 250 A, 242 kA at 24","metaDescription":"Siemens SENTRON 3VA2225-6KQ42-0AA0 molded case circuit breaker, 250 A rated, 4-pole, line protection, ETU860 release, 242 kA at 240 V. Active production. Available to order against","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","at 240 V":"242 kA","at 415 V":"187 kA","at 440 V":"187 kA","at 500 V":"121 kA","at 690 V":"4.5 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","Product version":"Line protection","Voltage Trigger":"No","lifecycle_stage":"current","Product Brand Name":"SENTRON","Product Designation":"Molded case circuit breaker","Undervoltage Release":"No","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","Courant permanent assigné Iu":"250 A","Ground-Fault Monitoring Version":"Summation current formation L + N conductor","Insulation Voltage / Rated Value":"800 V","Design Of The Overcurrent Release":"ETU860","protection class IP / on the front":"IP40","design of the N-conductor protection":"adjustable OFF; 20% to 100%","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","Adjustable response value current / lg max.":"250 A","Adjustable response value current / lg min.":"50 A","Neutral conductors / upgradeable/retrofittable":"No","Protection Function Of The Overcurrent Release":"LSIG","number of CO contacts / for auxiliary contacts":"0","Switching Capacity Class Of The Circuit Breaker":"H","Mechanical Service Life (Switching 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","Type of connectable conductor cross-section, connection screw, width x thickness , max.":"25 x 8 mm","Type of connectable conductor cross-section, connection screw, width x thickness , min.":"13 x 1 mm"}},"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=7123&mlfb=3VA2225-6KQ42-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2225-6KQ42-0AA0/alternatives.json"},"ai":{"faq":[{"question":"Will 3VA2225-6KQ42-0AA0 drop into a panel specified for 3VA2225-5JQ32-0AK0?","answer":"Yes, the panel cutout and bus connections are identical between the two. No rewiring is needed — the swap is the trip unit and its features, not the physical footprint."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2225-6KQ42-0AA0","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/3VA2225-6KQ42-0AA0 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}}