DNT2-R1R Semiconductor Fuse Link Overview
The GRL DNT2-R1R is a high-capacity, ultra-rapid fuse link engineered for the demanding protection of power semiconductor components in high-voltage alternating current (AC) systems. As a key component in GRL’s DNT series, the DNT2-R1R is categorized under the aR protection class, specifically designed to safeguard fast-switching devices like IGBTs, Thyristors, and MOSFETs from critical short-circuit currents.With a high-rated voltage of AC 1250V and a current range from 350A to 800A, this fuse size (Size 2) is purpose-built for high-power conversion applications. Its core function is to provide immediate, highly reliable fault clearance, thereby ensuring the longevity and operational integrity of expensive power electronics modules.
DNT2-R1R Semiconductor Fuse Link Features
The DNT2-R1R delivers industry-leading performance essential for high-power density applications
- Rated Voltage: AC 1250V. Suitable for advanced medium-voltage power systems in industrial and renewable energy sectors.
- Protection Category: aR (Short-Circuit Protection for Semiconductors). Guarantees extremely fast response to short-circuit faults.
- High Interrupting Capacity (HIC): 100kA. Ensures safe and effective interruption of massive fault currents without destructive results.
- Ultra-Rapid Response: Features a minimal pre-arcing time and an exceptionally low I2t value (let-through energy), which is the most critical factor in preventing semiconductor damage.
- Mounting Type (R): Utilizes a screw connection type with the contact knife rotated 90°, optimizing integration and providing secure mounting stability in constrained chassis spaces.
- International Compliance: Designed to meet stringent international standards, including IEC 60269-4
