GRL DNT3-R1N Series: High-Capacity 1000V DC Protection (315A to 1100A)
The Essential Defense for Ultra-High Current DC Links
The GRL DNT3-R1N Ceramic Semiconductor Fuse Link is engineered as a robust, specialized protective solution for the most demanding DC applications. Designed to handle continuous current flows from 315A up to 1100A at a constant 1000V DC, this fuse series provides the crucial safety layer for multi-megawatt power converters and storage systems. As an aR-class component, it guarantees the precision and speed necessary to protect sensitive silicon devices from short-circuit failure.
Key Performance Metrics & Current Capability
The DNT3-R1N’s ability to operate efficiently at high amperage makes it a top choice for consolidating protection:
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Voltage Rating: 1000V DC
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Current Range: Expansive coverage from 315A up to 1100A
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Interrupting Rating: A dependable 50kA capacity
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Fuse Class: aR (Ultra-Fast, Short-Circuit Protection)
Precision Protection: Controlling the I²t
In high-current DC systems, the destructive energy during a fault is immense. The DNT3-R1N’s design is focused on achieving the absolute minimum I²t (let-through energy).
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Minimization Goal: Lower I²t ensures that the thermal stress on expensive power semiconductor modules (like high-current IGBTs) remains below their damage threshold.
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Speed Advantage: The aR characteristic guarantees that the fuse clears the fault faster than the thermal rise time of the protected device. This precision is non-negotiable for system longevity and reliability at 1100A current levels.
Targeted Applications: Where DNT3-R1N Excels
This high-amperage, high-voltage fuse is critical in several core power sectors:
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Battery Energy Storage Systems (BESS): Protection for the primary DC collection buses and main battery disconnects in large installations.
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Renewable Energy Conversion: Essential for securing the DC links of centralized solar and wind power inverters (1MW+).
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Industrial DC Power: Used in heavy-duty industrial rectifiers and converters where currents exceed 1000A.
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DC Distribution: Protecting critical high-current nodes in 1000V DC infrastructure.
Construction & Reliability Features
The use of ceramic and advanced engineering ensures reliability from 315A to 1100A:
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High-Capacity Design: Optimized internal elements handle continuous 1100A current flow with minimal power dissipation.
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DC Arc Quenching: Specialized construction guarantees reliable and rapid arc extinction in the challenging 1000V DC environment.
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Robust Casing: The ceramic body provides superior thermal stability and structural integrity necessary for fault interruption at 50kA.
Secure Your High-Current DC System
For uncompromising protection of your high-value power electronics, the GRL DNT3-R1N 1000V DC Fuse is the definitive choice. Contact our GRL specialists today for detailed technical schematics and personalized consultation on coordinating the optimal I²t protection for your 315A–1100A DC applications.
