{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2450-5KP42-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2450-5KP42-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA2450-5KP42-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2450-5KP42-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2450-5KP42-0AA0, molded case circuit breaker, 4-pole, 500 A rated continuous current, 187 kA interrupting capacity at 240 V AC, ETU850 electronic trip unit.","salesMarkdown":"The Siemens SENTRON 3VA2450-5KP42-0AA0 is a 4-pole molded case circuit breaker (MCCB) rated for 500 A continuous current at 40 °C, with an ETU850 electronic trip unit covering an adjustable overload range from 750 A to 7 000 A. It delivers 187 kA interrupting capacity at 240 V AC, stepping down to 121 kA at 415/440 V, 75.6 kA at 500 V, and 9 kA at 690 V — enough headroom for most industrial service-entrance or feeder applications. The 500 A continuous rating holds flat from 40 °C up to 50 °C, then derates to 477 A at 55 °C, 455 A at 60 °C, 432 A at 65 °C, and 410 A at 70 °C. If your panel ambient sits at 50 °C, you get the full 500 A; above that, the thermal curve governs the real load you can pass without nuisance tripping. The adjustable trip range (750 A minimum, 7 000 A maximum) means the ETU850 can be dialed to match the cable and load — useful when the same breaker frame covers multiple feeder sizes in a build. Interrupting capacity at 240 V hits 187 kA — that is well above typical utility fault levels in North American 120/208 V or 277/480 V panels, so you get selectivity headroom without oversizing the frame. ## Integration and physical fit The 3VA2450-5KP42-0AA0 measures 248 mm high, 184 mm wide, and 110 mm deep — a standard MCCB footprint for a 500 A frame. The 4-pole configuration handles three-phase loads plus neutral switching, common in generator paralleling or IT-system distribution. Communication function is built in, so it can report status and trip events to a higher-level control system without an add-on module.","metaTitle":"Siemens 3VA2450-5KP42-0AA0 SENTRON MCCB, 500 A, 4-Pole, 187","metaDescription":"Siemens SENTRON 3VA2450-5KP42-0AA0 molded case circuit breaker, 500 A continuous, 4-pole, 187 kA interrupting at 240 V. Active production. Quoted to order.","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","Maximum":"7 000 A","Minimum":"750 A","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","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":"99 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"Yes","Ground-Fault Monitoring Version":"Without","Continuous Current / Rated Value":"500 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":"630 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":"M","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"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/8413ffe558e60763196158cb5881b76d.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=75946&mlfb=3VA2450-5KP42-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2450-5KP42-0AA0/alternatives.json"},"ai":{"faq":[{"question":"How do I get current pricing and availability for 3VA2450-5KP42-0AA0?","answer":"Submit an RFQ through this listing. Availability and current pricing are confirmed at quote time through independent distribution channels."},{"question":"What is the closest functional second-source to 3VA2450-5KP42-0AA0?","answer":"The 3VA2116-5JP32-0AE0 is a smaller-frame SENTRON MCCB (160 A frame, 3-pole) with a lower interrupting capacity. It will not drop into the same panel without rewiring — the 3VA2450 is a 500 A, 4-pole frame and the 3VA2116 is a 160 A, 3-pole. For a true functional replacement at the 500 A level, stick with the 3VA2450 family."},{"question":"What are the physical dimensions of 3VA2450-5KP42-0AA0?","answer":"Height is 248 mm, width is 184 mm, and depth is 110 mm. These are the standard MCCB footprint dimensions for a 500 A frame."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2450-5KP42-0AA0","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/3VA2450-5KP42-0AA0 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}}