{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2450-7KP42-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2450-7KP42-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA2450-7KP42-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2450-7KP42-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2450-7KP42-0AA0, 4-pole molded case circuit breaker, 500 A rated continuous current, ETU850 electronic trip unit, line protection, 330 kA at 240 V.","salesMarkdown":"## 480 V switchboard workhorse It's a line-protection device — meaning it sits upstream of distribution or motor loads and clears faults fast. The interrupting ratings tell the story: 330 kA at 240 V, 242 kA at 415 V and 440 V, 187 kA at 500 V, and still 9 kA at 690 V. That's serious fault-current headroom for a 500 A frame, so you can count on selectivity downstream without worrying about cascade failure on a high-SCCR bus. The breaker holds full 500 A rating up to 50 °C ambient, then derates to 477 A at 55 °C, 455 A at 60 °C, 432 A at 65 °C, and 410 A at 70 °C. Dimensions: 248 mm tall, 184 mm wide, 110 mm deep. ## Trip unit and communication The latching endurance is 15 000 cycles, which is typical for a solid-frame MCCB in distribution duty. If you're comparing against the 5SQ2670-2YA63 or similar 500 A frames, the ETU850's programmability and comms integration are the differentiators; the 5SQ series is a simpler thermal-magnetic design without the communication module.","metaTitle":"Siemens 3VA2450-7KP42-0AA0 SENTRON MCCB, 500 A, 4-Pole, ETU8","metaDescription":"Siemens SENTRON 3VA2450-7KP42-0AA0 molded case circuit breaker, 500 A, 4-pole, ETU850 electronic trip unit. Rated 330 kA at 240 V. Sourced to order against an RFQ.","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":"330 kA","at 415 V":"242 kA","at 440 V":"242 kA","at 500 V":"187 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]":"4.3 in","Width [in]":"7.2 in","Height [in]":"9.8 in","Limited To 1 S":"6 kA","Number of poles":"4","Product version":"Line protection","lifecycle_stage":"current","Limited To 0.5 S":"6 kA","Product brand name":"SENTRON","Product designation":"Molded case circuit breaker","Latching - endurance":"15 000","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":"-40 °C","Other Measurement Function":"Yes","Rated continuous current Iu":"500 A","Rated insulation voltage Ui":"800 V","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% bis100%","Reference code / acc. to DIN EN 81346-2":"Q","Adjustable response value time / tr max.":"20","Adjustable response value time / tr min.":"0.5","Adjustable response value time / tsd max.":"0.5 s","Adjustable response value time / tsd min.":"0.05 s","Product extension / optional / motor drive":"Yes","Adjustable response value current / Ir max.":"500 A","Adjustable response value current / li max.":"7 000 A","Adjustable response value current / li min.":"750 A","Adjustable response value current / lr min.":"200 A","Adjustable response value current / Isd max.":"5 000 A","Adjustable response value current / Isd min.":"300 A","Neutral conductors / upgradeable/retrofittable":"No","Number of CO contacts / for auxiliary contacts":"0","Protective function of the overcurrent release":"LSI","Switching capacity class of the circuit breaker":"C","Max. rated operational current of the frame size":"630 A","Max. rated operational voltage Ue with AC 50/60Hz":"690 V","Type of electrical connection / for main current circuit":"Lug terminal","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/3e82fcb3dbe96f8f489a755a320163c4.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=231393&mlfb=3VA2450-7KP42-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2450-7KP42-0AA0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy the 3VA2450-7KP42-0AA0?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ to get a firm delivery commitment."},{"question":"What are the key ratings of the 3VA2450-7KP42-0AA0?","answer":"It's a 4-pole, 500 A continuous current MCCB with an ETU850 electronic trip unit. Interrupting capacity reaches 330 kA at 240 V, 242 kA at 415 V, and 9 kA at 690 V. The frame dimensions are 248 x 184 x 110 mm."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2450-7KP42-0AA0","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/3VA2450-7KP42-0AA0 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}}