{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2450-5HK42-0AF0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2450-5HK42-0AF0","canonicalUrl":"https://aoctrl.com/siemens/3VA2450-5HK42-0AF0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2450-5HK42-0AF0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2450-5HK42-0AF0, molded case circuit breaker, 4-pole, 500 A continuous at 40 °C, 187 kA interrupting at 240 V, line protection design.","salesMarkdown":"## 500 A continuous, 187 kA interrupting — the ratings that decide panel fit The Siemens SENTRON 3VA2450-5HK42-0AF0 is a 4-pole molded case circuit breaker rated for 500 A continuous at 40 °C, with an interrupting capacity of 187 kA at 240 V. That interrupting figure drops to 121 kA at 415 V and 440 V, then 75.6 kA at 500 V, and 9 kA at 690 V — so the voltage class of your distribution bus determines whether this breaker clears a fault without cascading upstream. The 500 A rating holds flat through 50 °C; above that, derate to 477 A at 55 °C, 455 A at 60 °C, 432 A at 65 °C, and 410 A at 70 °C. The basic switch order code is 3VA24505HK420AA0, which is useful for verifying the internal mechanism when ordering a replacement or spare. ## Panel integration — footprint and thermal budget Dimensions are 184 mm wide, 248 mm high, and 110 mm deep. The 4-pole footprint is standard for this frame size; verify gland-plate cutout and bus-bar spacing against your existing panel layout. Maximum power loss is 99 W — that heat must be managed within the enclosure, especially if the breaker is loaded near its 500 A rating and the panel ambient is already elevated.","metaTitle":"Siemens 3VA2450-5HK42-0AF0 SENTRON MCCB, 500 A, 4-Pole, 187","metaDescription":"Siemens SENTRON 3VA2450-5HK42-0AF0 molded case circuit breaker, 500 A continuous at 40 °C, 4-pole, 187 kA interrupting at 240 V. Current lifecycle stage. Sourced to order against R","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"Depth":"110 mm","Width":"184 mm","Height":"248 mm","Maximum":"7 000 A","Minimum":"7 000 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":"Yes","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":"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","Of The Supplied Basic Switch":"3VA24505HK420AA0","Design Of The Auxiliary Switch":"1 auxiliary switch + 1 trip alarm switch HQ","Design Of The Auxiliary Release":"Without auxiliary release","Ground-Fault Monitoring Version":"Without","Continuous Current / Rated Value":"500 A","Insulation Voltage / Rated Value":"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%","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":"500 A","Product Extension / Optional / Motor Drive":"Yes","Protection Function Of The Overcurrent Release":"ELISA LI","number of CO contacts / for auxiliary contacts":"2","Of The Integrated Auxiliary Switch/Alarm Switch":"3VA9988-0AB12","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":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1391377&mlfb=3VA2450-5HK42-0AF0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2450-5HK42-0AF0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA2450-5HK42-0AF0 and how do I get a price?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"What is the interrupting capacity of this breaker at different voltages?","answer":"187 kA at 240 V, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 9 kA at 690 V."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2450-5HK42-0AF0","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/3VA2450-5HK42-0AF0 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}}