{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2450-5JQ42-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2450-5JQ42-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA2450-5JQ42-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2450-5JQ42-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2 series, molded case circuit breaker, 3VA2450-5JQ42-0AA0, 500 A, 4-pole, ETU560 electronic trip unit, breaking capacity 187 kA at 240 V.","salesMarkdown":"The Siemens 3VA2450-5JQ42-0AA0 is a SENTRON 3VA2 molded case circuit breaker rated for 500 A continuous current at 40-50 °C ambient, with a 4-pole configuration and an ETU560 electronic trip unit. That 500 A holds steady through 50 °C; above that it derates to 477 A at 55 °C, 455 A at 60 °C, 432 A at 65 °C, and 410 A at 70 °C — so if your panel runs hot, the real ampacity is the derated figure, not the nameplate. The ETU560 includes communication capability (likely via a plug-in module, not built-in), and ground-fault monitoring uses summation current on L+N — that means a separate neutral CT or internal summation, not a residual current sensor on the supply side. No undervoltage release or voltage trip fitted on this order code; if you need those, the breaker accepts field-installable accessories. The 3VA2225-5JQ32-0AK0 is a 250 A, 3-pole frame from the same 3VA2 family. The 3VA2450-5JQ42-0AA0 carries twice the current rating (500 A vs 250 A) and adds a fourth pole, so it's a physically larger frame — it will not drop into a panel cutout sized for the 250 A unit without reworking the mounting and bus connections. Both use the ETU trip platform, but the 500 A breaker's higher continuous rating and 4-pole footprint mean the panel design and cable sizing are different from the start.","metaTitle":"Siemens 3VA2450-5JQ42-0AA0 SENTRON MCCB, 500 A, 4-Pole, ETU5","metaDescription":"Siemens 3VA2450-5JQ42-0AA0 SENTRON molded case circuit breaker, 500 A continuous at 40-50°C, 4-pole, ETU560 electronic trip, 187 kA at 240 V. Current lifecycle stage. Quoted to ord","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"Depth":"110 mm","Width":"184 mm","Height":"248 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":"9 kA","at 40 °C":"500 A","at 45 °C":"500 A","at 50 °C":"500 A","at 55 °C":"477 A","at 60 °C":"455 A","at 65 °C":"432 A","at 70 °C":"410 A","Depth [In]":"4.33 in","Width [In]":"7.24 in","Height [In]":"9.76 in","Limited To 1 S":"6 kA","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":"99 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","Courant permanent assigné Iu":"500 A","Ground-Fault Monitoring Version":"Summation current formation L + N conductor","Tension assignée d'isolement Ui":"800 V","Design Of The Overcurrent Release":"ETU560","protection class IP / on the front":"IP40","reference code / acc. to IEC 81346-2":"Q","at AC / limited to 0.5 s / rated value":"6 kA","Product Extension / Optional / Motor Drive":"Yes","Adjustable response value current / lg max.":"500 A","Adjustable response value current / lg min.":"100 A","Adjustable response value current / li max.":"7 000 A","Adjustable response value current / li min.":"750 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":"M","Max. rated operational current of the frame size":"630 A","Mechanical Service Life (Operating Cycles) / Typical":"20 000","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.":"35 x 10 mm","Type of connectable conductor cross-section, connection screw, width x thickness , min.":"20 x 1 mm"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/e72e756ab9c00b036b16a5a8eb2fc3d2.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=306776&mlfb=3VA2450-5JQ42-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2450-5JQ42-0AA0/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2450-5JQ42-0AA0","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/3VA2450-5JQ42-0AA0 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}}