{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2450-5MN32-0DA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2450-5MN32-0DA0","canonicalUrl":"https://aoctrl.com/siemens/3VA2450-5MN32-0DA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2450-5MN32-0DA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2 molded case circuit breaker, 3VA2450-5MN32-0DA0, 3-pole, 500 A rated current at 40 °C, 121 kA breaking capacity at 415 V AC, motor protection design with integrated undervoltage release.","salesMarkdown":"## SENTRON 3VA2 — 500 A Motor Protection MCCB with Undervoltage Release The Siemens 3VA2450-5MN32-0DA0 is a SENTRON 3VA2 molded case circuit breaker (MCCB) purpose-built for motor protection, carrying a 500 A rated current at 40 °C ambient and a 121 kA interrupting capacity at 415 V AC — enough to handle high-fault utility feeds downstream of a transformer without cascading upstream gear. ## Breaking Capacity — Where It Holds and Where It Doesn't The interrupting curve on this 3VA2 frame is worth a close read: 187 kA at 240 V AC, 121 kA at both 415 V and 440 V, then it drops to 75.6 kA at 500 V and only 9 kA at 690 V. The 690 V figure (9 kA) is a reminder this is not a 690 V main breaker; it's a feeder or motor branch device sized for 400 V class systems. The short-time withstand (6 kA limited to 1 s) is the coordination window for downstream selectivity. Above that, it steps down: 495 A at 55 °C, 490 A at 60 °C, 485 A at 65 °C, and 480 A at 70 °C. That 480 A floor at 70 °C still covers a 450 A motor FLA with headroom, so you're not forced to oversize the frame for a warm panel. Maximum power loss is 101.5 W — plan for that heat rejection in a sealed cabinet. ## Physical Fit — Panel and Footprint No auxiliary switch fitted as standard (the design of the auxiliary switch is 'without'), so if you need remote status, plan for a separate auxiliary switch block on the side. The undervoltage release is wired separately from the main power path; verify coil voltage rating against your control supply before commissioning.","metaTitle":"Siemens 3VA2450-5MN32-0DA0 SENTRON MCCB, 500 A, 3-Pole, Moto","metaDescription":"Siemens 3VA2450-5MN32-0DA0 SENTRON molded case circuit breaker, 500 A rated at 40 °C, 121 kA breaking at 415 V, 3-pole motor protection with undervoltage release. Current lifecycle","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"Depth":"110 mm","Width":"138 mm","Height":"248 mm","Maximum":"13 s","Minimum":"4 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":"495 A","at 60 °C":"490 A","at 65 °C":"485 A","at 70 °C":"480 A","Depth [In]":"4.33 in","Width [In]":"5.43 in","Height [In]":"9.76 in","Limited To 1 S":"6 kA","Trip Indicator":"No","Number Of Poles":"3","Voltage Trigger":"No","lifecycle_stage":"current","Product Brand Name":"SENTRON","Product Designation":"Molded case circuit breaker","Undervoltage Release":"Yes","Design Of The Product":"Motor protection","Communication Function":"No","Phase Failure Detection":"Yes","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","power loss [W] / maximum":"101.5 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","Of The Supplied Basic Switch":"3VA2450-5MN32-0AA0","Design Of The Auxiliary Switch":"Without","Design Of The Auxiliary Release":"undervoltage release (UVR)","Ground-Fault Monitoring Version":"Without","Continuous Current / Rated Value":"500 A","Insulation Voltage / Rated Value":"800 V","adjustable trip class (Tc CLASS)":"10A, 10E, 20E","Design Of The Overcurrent Release":"ETU350M","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","Of The Integrated Auxiliary Trip Unit":"3VA9608-0BB25","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":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=570125&mlfb=3VA2450-5MN32-0DA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2450-5MN32-0DA0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA2450-5MN32-0DA0 and what is the lead time?","answer":"Sourced and quoted to order through independent distribution. Availability and current pricing are confirmed at quote time against an RFQ — no stock count or lead-time number is published here."},{"question":"What is the breaking capacity of this MCCB at 415 V?","answer":"121 kA at 415 V AC, which is the typical rating for 400 V class industrial distribution behind a medium-voltage transformer."},{"question":"Does 3VA2450-5MN32-0DA0 include phase failure detection?","answer":"Yes, phase failure detection is built into this motor protection design — it trips on loss of any phase, which is standard for preventing single-phasing damage on induction motors."},{"question":"What are the physical dimensions of this breaker?","answer":"248 mm high, 138 mm wide, 110 mm deep — a standard 3-pole 3VA2 frame footprint that fits existing SENTRON mounting bases."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2450-5MN32-0DA0","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/3VA2450-5MN32-0DA0 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}}