{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2450-7HK42-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2450-7HK42-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA2450-7HK42-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2450-7HK42-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2450-7HK42-0AA0, molded case circuit breaker, 4-pole, 500 A at 40 °C, ETU340 electronic trip unit, interrupting rating 330 kA at 240 V.","salesMarkdown":"## Siemens 3VA2450-7HK42-0AA0 — 500 A SENTRON MCCB with ETU340 Trip The Siemens SENTRON 3VA2450-7HK42-0AA0 is a 4-pole molded case circuit breaker rated for 500 A continuous at 40 °C, carrying the same rating through 50 °C before derating begins at 55 °C (477 A) and stepping down to 410 A at 70 °C. That thermal curve means this breaker holds full ampacity across most common panel ambient conditions — you only lose headroom in a hot enclosure or outdoor cabinet in direct sun. Interrupting capacity hits 330 kA at 240 V, 242 kA at 415 V and 440 V, 187 kA at 500 V, and 9 kA at 690 V. Those numbers place it in the high-fault tier of the SENTRON line — sized for large transformer secondaries or busway feeds where available fault current runs high. The ETU340 electronic trip unit provides adjustable overload and short-time protection with an LSI curve, plus the N-conductor protection can be set to OFF, 50%, or 100% of the phase rating — useful for 4-wire systems where neutral loading varies. Front face carries IP40 protection, so it's suited for enclosed distribution panels where incidental contact is the only exposure. Rated insulation voltage Ui is 800 V, and the operating temperature range spans -25 °C to 70 °C, with storage from -40 °C to 80 °C.","metaTitle":"Siemens 3VA2450-7HK42-0AA0 SENTRON MCCB, 500 A, 4-Pole, ETU3","metaDescription":"Siemens SENTRON 3VA2450-7HK42-0AA0 molded case circuit breaker, 500 A continuous, 4-pole, ETU340 electronic trip. Interrupting 330 kA at 240 V. Current lifecycle stage. Sourced to","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]":"4.33 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":"No","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":"Without","Tension assignée d'isolement Ui":"800 V","Design Of The Overcurrent Release":"ETU340","protection class IP / on the front":"IP40","design of the N-conductor protection":"adjustable OFF; 50%; 100%","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 / li max.":"7 000 A","Adjustable response value current / li min.":"7 000 A","Neutral conductors / upgradeable/retrofittable":"No","Protection Function Of The Overcurrent Release":"ELISA LI","number of CO contacts / for auxiliary contacts":"0","Switching Capacity Class Of The Circuit Breaker":"C","Max. rated operational current of the frame size":"500 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/b618c5ed19ee4d003691cff462cde254.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=568782&mlfb=3VA2450-7HK42-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2450-7HK42-0AA0/alternatives.json"},"ai":{"faq":[{"question":"What is the interrupting rating of 3VA2450-7HK42-0AA0 at 240 V?","answer":"330 kA at 240 V, dropping to 242 kA at 415 V and 440 V, 187 kA at 500 V, and 9 kA at 690 V."},{"question":"What trip unit does this MCCB use?","answer":"The ETU340 electronic trip unit with LSI protection curve and adjustable N-conductor protection (OFF, 50%, or 100% of phase rating)."},{"question":"Where can I buy 3VA2450-7HK42-0AA0?","answer":"Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2450-7HK42-0AA0","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/3VA2450-7HK42-0AA0 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}}