DNT1-R1L Series: Ultra-Fast aR Class Semiconductor Fuse for 1000V DC Protection
The DNT1-R1L series is a premium aR-class high-speed semiconductor fuse, specifically designed to address the critical protection needs of modern high-voltage DC power conversion systems. With a robust 1000V DC rating and a comprehensive current spectrum from 160A to 550A, the DNT1-R1L provides immediate and decisive protection for crucial devices like IGBTs, MOSFETs, and thyristors. Its design focuses on minimizing the damage caused by short-circuit faults through ultra-fast current interruption. Featuring a high interrupting capacity of 50kA, the DNT1-R1L guarantees safe and reliable fault clearance, ensuring the longevity and stability of your system.
DNT1-R1L Semiconductor Fuse Technical Parameters
Essential Technical Specifications
The DNT1-R1L fuse is engineered around the demanding requirements of high-power DC applications:
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Model Identification: DNT1-R1L Series
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Protection Class: aR Class – Signifying high-speed, non-delay action for pure short-circuit protection.
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Voltage Rating: 1000V DC – Specifically optimized for stable performance in high-voltage DC circuits.
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Current Range: Available in a wide selection of ratings including 160A, 200A, 250A, 315A, 400A, 500A, and 550A.
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Interrupting Rating: 50kA – Ensures safe clearance of fault currents up to 50,000 Amperes at the maximum rated voltage.
Superior Current Limiting and I²t Performance
A defining characteristic of the DNT1-R1L is its exceptional current limiting capability. The fuse is carefully designed to achieve an ultra-low I²t value. The I²t (Ampere-squared-seconds) represents the total thermal energy let through by the fuse during the clearing time. By effectively limiting this energy, the DNT1-R1L prevents the fault current’s destructive thermal impact from exceeding the protective limits of the semiconductor device, thereby offering maximum defense against burnout.
Key Application Environments
The speed and high-DC-voltage rating of the DNT1-R1L make it an essential safety component across numerous high-power sectors:
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Renewable Energy: Critical protection for DC links, inverters, and converters in Solar PV installations and Wind Power systems.
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Energy Storage: Integral safety feature within Battery Energy Storage Systems (BESS), protecting high-current DC collection and distribution buses.
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E-Mobility Infrastructure: Core protection for high-power circuits in DC Fast Charging Stations.
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Industrial Power Control: Safeguarding the power stacks in high-power VFDs (Variable Frequency Drives) and UPS (Uninterruptible Power Supplies).
Distinctive Features and Reliability Benefits
Choosing the DNT1-R1L series provides tangible benefits in system performance and operational reliability:
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Optimized DC Arc Extinction: Specialized construction ensures reliable, stable, and rapid arc quenching at 1000V DC, a challenging environment for conventional fuses.
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Fastest Response: The aR-class speed ensures the fault is cleared faster than the critical thermal response time of the protected power module.
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Robust Mounting: Features a reliable bolt-down termination design for excellent mechanical stability, minimal contact resistance, and superior thermal dissipation.
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Inventory Efficiency: The broad current coverage (160A to 550A) within the DNT1-R1L series simplifies selection and inventory management for various power system configurations.
Partner with Us for Advanced Protection
Ensure the highest level of performance and security for your high-value power electronic assets. The DNT1-R1L 1000V DC High-Speed Semiconductor Fuse is the uncompromising protection solution you need. Contact our engineering specialists today for detailed technical specifications, precise I²t selection guidance, and expert consultation on integrating the optimal protection into your 1000V DC system.
