{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2225-5KP42-0AE0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2225-5KP42-0AE0","canonicalUrl":"https://aoctrl.com/siemens/3VA2225-5KP42-0AE0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2225-5KP42-0AE0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2225-5KP42-0AE0, molded case circuit breaker, 4-pole, 250 A, ETU850 electronic trip unit, 187 kA at 240 V, 86 mm depth, 140 mm width, 181 mm height.","salesMarkdown":"## 250 A MCCB with ETU850 — what the ratings decide The Siemens SENTRON 3VA2225-5KP42-0AE0 is a 4-pole molded case circuit breaker rated 250 A continuous at 40 °C, carrying the same 250 A rating through 50 °C before it begins to derate — 238 A at 55 °C, 225 A at 60 °C, 213 A at 65 °C, and 200 A at 70 °C. That thermal profile means the breaker holds its full ampacity in most ventilated enclosures; only above 50 °C ambient does the installer need to check the derating curve against the connected load. The ETU850 electronic trip unit provides LSIG protection — long-time, short-time, instantaneous, and ground-fault — with adjustable curves via the communication interface. The breaker ships with four HQ auxiliary switches and an onboard communication function, so it integrates directly into a plant-wide power monitoring scheme without a separate add-on module. Breaking capacity is 187 kA at 240 V, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 4.5 kA at 690 V. Dimensions are 86 mm depth, 140 mm width, and 181 mm height — a 4-pole frame that occupies roughly the same footprint as other SENTRON 3VA 250 A breakers. The width is the critical dimension for multi-breaker lineup spacing; 140 mm per pole set means a 4-pole unit needs 140 mm of DIN-rail or mounting-plate width, not 4 × 35 mm. Rated insulation voltage Ui is 800 V, and the operating temperature range is -25 °C to 70 °C with storage from -40 °C to 80 °C. Maximum power loss is 48 W — a figure the panel thermal designer needs for enclosure heat rise calculations, especially when several breakers are ganged.","metaTitle":"Siemens 3VA2225-5KP42-0AE0 SENTRON MCCB, 250 A, 187 kA at 24","metaDescription":"Siemens SENTRON 3VA2225-5KP42-0AE0 molded case circuit breaker, 250 A rated, 187 kA breaking at 240 V. ETU850 electronic trip. Current production. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"Depth":"86 mm","Width":"140 mm","Height":"181 mm","at 240 V":"187 kA","at 415 V":"121 kA","at 440 V":"121 kA","at 500 V":"75.6 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","Auxiliary contact version":"4 auxiliary switches HQ","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"Yes","rated insulation voltage Ui":"800 V","Of The Supplied Basic Switch":"#BEZUG!","Courant permanent assigné Iu":"250 A","Design Of The Auxiliary Release":"Without auxiliary release","Ground-Fault Monitoring Version":"Without","Design Of The Overcurrent Release":"ETU850","protection class IP / on the front":"IP40","design of the N-conductor protection":"adjustable OFF; 20% to 100%","reference code / acc. to IEC 81346-2":"Q","Product Extension / Optional / Motor Drive":"Yes","Adjustable response value current / li max.":"2 500 A","Adjustable response value current / li min.":"375 A","Neutral conductors / upgradeable/retrofittable":"No","Protection Function Of The Overcurrent Release":"LSI","number of CO contacts / for auxiliary contacts":"4","Of The Integrated Auxiliary Switch/Alarm Switch":"3VA9988-0AA12","Switching Capacity Class Of The Circuit Breaker":"M","Max. rated operational current of the frame size":"250 A","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=1116232&mlfb=3VA2225-5KP42-0AE0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2225-5KP42-0AE0/alternatives.json"},"ai":{"faq":[{"question":"How do I get pricing and availability for 3VA2225-5KP42-0AE0?","answer":"Submit an RFQ through this listing. The part is sourced to order via independent distribution; current pricing and stock position are confirmed at quote time. No stock count or price is published here."},{"question":"What is the breaking capacity of this MCCB at different voltages?","answer":"187 kA at 240 V, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 4.5 kA at 690 V (–). The 690 V rating is the constraint to watch for high-voltage applications."},{"question":"Does 3VA2225-5KP42-0AE0 have communication capability?","answer":"Yes, the breaker includes a communication function for integration with power monitoring systems. The ETU850 trip unit supports adjustable protection curves via this interface."},{"question":"What are the physical dimensions of this breaker?","answer":"Depth 86 mm, width 140 mm, height 181 mm (–). The 140 mm width is the key dimension for panel layout of this 4-pole unit."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2225-5KP42-0AE0","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/3VA2225-5KP42-0AE0 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}}