DNT2-R1R: Reliable 1000V DC Protection for Medium-to-High Current Stacks (250A-800A)
Product Overview: The DNT2-R1R Advantage
The DNT2-R1R Ceramic Semiconductor Fuse Link is a high-performance solution designed for critical protection in 1000V DC power systems. Engineered as an aR-class fuse, its primary mission is to offer ultra-fast protection against short-circuit faults across a vital current range of 250A to 800A. With a certified interrupting rating of 50kA, the DNT2-R1R provides the precise speed and robust capacity necessary to protect high-value power electronic devices from destructive thermal and electrical energy.
Why Choose the DNT2-R1R? Key Protection Features
Q: What makes the DNT2-R1R suitable for high-power semiconductor protection?
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A: Its core strength lies in its aR (ultra-fast) characteristic. This ensures the fuse reacts faster than the semiconductor’s thermal runaway time. More critically, the DNT2-R1R is optimized for an extremely low I²t value. This low I²t minimizes the energy surge that passes through the circuit during a fault, which is the single most important factor in saving components like IGBTs and Thyristors from damage.
Q: Can this fuse handle complex 1000V DC environments?
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A: Absolutely. Unlike standard fuses, the DNT2-R1R is specifically designed for the unique challenges of DC power—namely, the lack of a natural zero-crossing point to aid arc extinction. The internal construction uses high-quality materials and design principles to guarantee stable, reliable arc quenching at its 1000V DC rating, even under a 50kA fault condition.
Technical Snapshot (250A-800A Coverage)
The DNT2-R1R series offers a wide array of ratings to perfectly match your specific needs:
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Voltage: 1000V DC
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Interrupting Capacity: 50kA
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Available Amperages: 250A, 315A, 400A, 500A, 630A, 700A, and 800A
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Construction: High-Stability Ceramic Link
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Compliance: aR (Semiconductor Protection Standard)
Application Focus: Protecting High-Current Links
The DNT2-R1R series is indispensable in any application requiring high-current DC protection up to 800A:
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Renewables: Securing the DC link and high-power rectifiers in large Wind Turbine Converters and solar farm central inverters.
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Energy Storage: Essential safety components in the main DC circuits of large-scale Battery Energy Storage Systems (BESS).
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Industrial Drives: Protecting the main DC bus feeding high-power variable speed drives (VFDs) and soft starters in heavy industry.
Need Expert Selection Guidance?
Choosing the correct fuse rating is critical; oversizing can lead to component failure, while undersizing can lead to nuisance tripping. Our engineering team specializes in matching the precise I²t characteristics of the DNT2-R1R series to the withstand capabilities of your power modules.
Contact us today for detailed I²t curves, technical data sheets, and personalized consultation to optimize the protection strategy for your 1000V DC, 250A-800A applications.
DNT2-R1R Semiconductor Fuse Link Applications
The high-power rating and aR characteristics of the DNT2-R1R make it indispensable across several critical high-power industries
