DNT2-R1N: 1000V DC Semiconductor Protection with 50kA Capability
An Unrivaled Solution for High-Fault DC Systems
The DNT2-R1N Ceramic Semiconductor Fuse Link redefines safety and reliability in the high-power DC sector. While maintaining the critical 1000V DC rating and broad 250A to 800A current coverage of the DNT2 series, the DNT2-R1N distinguishes itself with an exceptional 50kA interrupting rating. This makes it the definitive choice for applications where potential fault currents are extremely high, such as centralized renewable energy stations and large battery energy storage systems (BESS).
I. Technical Deep Dive: Performance and Capacity
As an aR-class fuse, the DNT2-R1N guarantees rapid-action short-circuit protection, a mandatory feature for protecting expensive power semiconductors. The fusion of the ceramic body and highly optimized internal elements allows for peak performance under extreme stress:
-
Elevated Fault Clearance: The 50kA rating provides superior confidence and safety margin when installed in circuits prone to maximum fault currents.
-
Wide Current Versatility: The 250A – 800A range caters to high-amperage DC buses, offering consolidated protection across various power levels within a single product family.
-
Precision $I^2t$ Control: The design prioritizes the lowest possible let-through energy (I²t) to protect delicate IGBT and MOSFET junctions from thermal overload during fault events.
-
DC Optimization: Engineered specifically for the zero-crossing-free nature of 1000V DC, ensuring rapid and effective arc quenching without fail.
II. Critical Applications: Where DNT2-R1N Excels
The combination of high current, high voltage, and 50kA capacity positions the DNT2-R1N as the primary protective device in the most challenging applications:
-
Grid-Scale BESS: Protection for the main DC isolators and collector circuits in multi-megawatt battery storage installations where stored energy can generate massive fault currents.
-
Utility PV Inverters: Safeguarding the DC input and link in central inverters (1MW+) that handle vast arrays of solar panels.
-
High-Current Drives: Reliable protection for large industrial motor drives operating from a shared, high-capacity DC bus.
-
Mining & Heavy Industry: High-capacity equipment where the 50kA breaking rating provides the necessary resilience against severe electrical disturbances.
III. Construction & Installation Advantages
The ceramic fuse link design of the DNT2-R1N offers tangible benefits in terms of reliability and integration:
-
Thermal Stability: The ceramic casing provides excellent mechanical stability and superior thermal characteristics, crucial for continuous high-current operation and fault handling.
-
Low Power Dissipation: Optimized internal resistance minimizes heat generation under normal load, contributing to overall system efficiency.
-
Simplified Engineering: Utilizing a standard low-voltage fuse format (despite the high DC voltage) simplifies integration into existing busbar systems and switchgear lineups.
Secure Your System. Demand 50kA Protection.
Don’t settle for standard protection when your high-power system is exposed to 50kA fault potential. Choose the DNT2-R1N 1000V DC Ceramic Fuse Link for unmatched speed and interrupting capability. Contact our specialized engineers today to discuss how the DNT2-R1N can enhance the safety and longevity of your 250A-800A DC applications.
DNT2-R1N Semiconductor Fuse Applications
The GRL DNT2-R1N is the preferred Semiconductor Fuse for industries where reliability at high power is mission-critical
