{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2450-5MQ32-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2450-5MQ32-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA2450-5MQ32-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2450-5MQ32-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2, molded case circuit breaker, 3-pole, 500 A (40–50 °C), motor protection design, breaking capacity 187 kA at 240 V AC, with communication and phase-failure detection.","salesMarkdown":"Above that, the rating derates linearly: 477 A at 55 °C, 455 A at 60 °C, 432 A at 65 °C, and 410 A at 70 °C — so on a warm panel floor you lose nearly 20 % of the headline capacity. The interrupting rating is the other headline figure: 187 kA at 240 V AC, 121 kA at 415/440 V, 75.6 kA at 500 V, and 9 kA at 690 V. The 3-pole design is built for three-phase motor circuits. ## Sizing and Coordination The short-time withstand is rated at 6 kA limited to 1 second, with an initial value of 100 A. That short-time rating governs selectivity with downstream breakers: if you need full discrimination up to 6 kA, the 3VA2450 holds in for that duration before tripping, letting a downstream device clear the fault first. The trip times are adjustable between 3 s and 13 s — set them to coordinate with motor starting curves (avoid nuisance trips on inrush) while still clearing a locked-rotor condition. Maximum power loss is 99 W — account for that heat in the enclosure thermal calculation, especially when multiple breakers are ganged.","metaTitle":"Siemens 3VA2450-5MQ32-0AA0 SENTRON MCCB, 500 A, 3-pole, Moto","metaDescription":"Siemens 3VA2450-5MQ32-0AA0 SENTRON molded case circuit breaker, 500 A rated at 40 °C, 3-pole, 187 kA at 240 V. Active production. Sourced to order. Request your 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":"138 mm","Height":"248 mm","Maximum":"13 s","Minimum":"3 s","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]":"5.43 in","Height [In]":"9.76 in","Initial Value":"100 A","Limited To 1 S":"6 kA","Trip Indicator":"No","Number Of Poles":"3","Voltage Trigger":"No","lifecycle_stage":"current","Full-Scale Value":"500 A","Product Brand Name":"SENTRON","Product Designation":"Molded case circuit breaker","Undervoltage Release":"No","Design Of The Product":"Motor protection","Communication Function":"Yes","Phase Failure Detection":"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":"Summation current formation L-conductor","Continuous Current / Rated Value":"500 A","Insulation Voltage / Rated Value":"800 V","adjustable trip class (Tc CLASS)":"10A, 10/10E, 20/ 20E, 30","Design Of The Overcurrent Release":"ETU860M","protection class IP / on the front":"IP40","operating power / at AC-3 / at 230 V":"110 000 W","operating power / at AC-3 / at 400 V":"200 000 W","Product Function / Grounding Protection":"Yes","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":"LSIG","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":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=569084&mlfb=3VA2450-5MQ32-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2450-5MQ32-0AA0/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of 3VA2450-5MQ32-0AA0 at 240 V?","answer":"187 kA at 240 V AC. At 415 V and 440 V it is 121 kA, at 500 V it is 75.6 kA, and at 690 V it is 9 kA."},{"question":"What is the rated current of this MCCB at 40 °C?","answer":"500 A at 40 °C, and it holds that rating up to 50 °C. At 55 °C it derates to 477 A, at 60 °C to 455 A, at 65 °C to 432 A, and at 70 °C to 410 A (–)."},{"question":"Where can I buy 3VA2450-5MQ32-0AA0?","answer":"This part is sourced to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm offer."},{"question":"Does 3VA2450-5MQ32-0AA0 include phase-failure detection?","answer":"Yes, phase-failure detection is built in, along with ground-fault monitoring via summation current formation on the L-conductor and a communication function."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2450-5MQ32-0AA0","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/3VA2450-5MQ32-0AA0 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}}