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DNT01-R1N Semiconductor Fuse: The Ultra-Rapid aR Semiconductor Protection Fuse Link

Model No.:
DNT01-R1N
Rated Voltage:
1250V AC
Current Range:
50~400A
Breaking Capacity:
100kA
Protection Category:
aR
Standards:
GB/T 13539.4 IEC 60269-4
Description

DNT01-R1N Semiconductor Fuse Overview

In modern power conversion and control systems, Power Semiconductor Devices, such as IGBTs (Insulated Gate Bipolar Transistors) and Thyristors, are essential yet incredibly sensitive components. When a severe Short-Circuit Fault occurs, the failure can be instantaneous and catastrophic, leading to costly system downtime and replacement. Standard fuses simply cannot react fast enough.

GRL ELECTRIC introduces the DNT01-R1N Fuse Link, a cutting-edge device engineered specifically to solve this critical protection challenge. This Ultra-Rapid Fuse belongs to the aR Fuse Link protection category, a designation for devices dedicated to pure Short-Circuit Protection. The DNT01-R1N is designed with an extremely low melting energy integral (Low I²t), guaranteeing that it interrupts the dangerous Fault Current in milliseconds, thereby limiting damage and ensuring the longevity of your valuable electronics. Choose the GRL DNT01-R1N for the most reliable electronic guardianship of your critical infrastructure.

DNT01-R1N Semiconductor Fuse Technical Parameters

Model No. Size In
(A)
I²t(A²S) 0.5In
Power
dissipation(W)
  0.8In
Power
dissipation(W)
1.0In
Power
dissipation(W)
Weight
(g)
Mounting
Pre-Arcing Fusing
DNT01-R1N-50A/1250V AC 01 50 135 1100 4 8 14 473±3% M8
11±1N.m
DNT01-R1N-63A/1250V AC 01 63 215 1750 6 11 20
DNT01-R1N-80A/1250V AC 01 80 420 3350 8 14 25
DNT01-R1N-100A/1250V AC 01 100 750 5950 10 17 30
DNT01-R1N-125A/1250V AC 01 125 1450 9600 12 21 38
DNT01-R1N-160A/1250V AC 01 160 2690 17850 15 27 49
DNT01-R1N-200A/1250V AC 01 200 5090 33700 17 31 57
DNT01-R1N-250A/1250V AC 01 250 9000 59900 20 36 65
DNT01-R1N-315A/1250V AC 01 315 18200 125000 22 40 74
DNT01-R1N-350A/1250V AC 01 350 24200 161000 24 43 79
DNT01-R1N-400A/1250V AC 01 400 33000 218000 26 48 88

DNT01 R1N

DNT01-R1N Semiconductor Fuse Features

The DNT01-R1N is built using a modern Square Body Fuse design, which offers superior thermal dissipation and a robust construction ideal for high-power, industrial applications.

  • Advanced Fusible Element: The internal element is crafted from pure or silver-plated copper with a unique geometric profile, ensuring an exceptionally Fast-Acting Fuse response to overcurrent events.
  • High-Purity Arc-Quenching Medium: The fuse body is filled with high-purity quartz sand, providing excellent arc-extinguishing properties that swiftly suppress the arc and ensure a high Breaking Capacity.
  • Low I²t Performance: The core feature is its ability to significantly reduce the energy let-through. This low I²t value protects sensitive Power Semiconductor Devices from the damaging Thermal Stress and mechanical forces associated with high-level fault currents.

DNT01-R1N Semiconductor Fuse Advantages

Core Benefit (Selling Point):Value Proposition (Why Buy DNT01-R1N)

Ultimate Ultra-Rapid Response:Ensures the circuit is cleared before irreversible damage occurs to the sensitive semiconductors.

Superior Current Limitation:Drastically limits the Peak Let-Through Current to protect downstream components and busbars from catastrophic electromechanical stress.

High Reliability and Durability:Built upon GRL ELECTRIC’s decades of expertise, ensuring a dependable GRL Fuse quality standard.

Global Standard Compliance:Fully compliant with IEC 60269-4, making it ideal for worldwide integration into any electrical system.

DNT01-R1N Semiconductor Fuse Applications

The DNT01-R1N Semiconductor Protection Fuse is engineered for high-power, high-voltage, and high-frequency circuits, making it the preferred choice across various critical applications:

  1. Renewable Energy: Essential for protecting the sensitive electronics within Solar Inverters and wind turbine converters in Photovoltaic Systems.
  2. Industrial Drives: Used in the protection of AC/DC Drives, soft starters, and servo systems in industrial automation.
  3. Power Quality & Storage: Critical protection for high-capacity UPS Systems, battery Energy Storage Systems (BESS), and DC Common Bus circuits.
  4. Power Conversion: Safeguarding Power Converters and Rectifiers in railway, electric vehicle (EV), and large industrial power supplies.

DNT01-R1N Semiconductor Fuse FAQs

Q: What exactly is an aR fuse and how does it differ from a general-purpose fuse (gG)?

A: An aR Fuse Link is a specialized, partial-range protection fuse primarily designed for Short-Circuit Protection of Power Semiconductor Devices. Its primary function is to react incredibly fast to high fault currents. A general-purpose fuse (gG/gL) is a full-range fuse, providing protection against both overload and short circuits, but its response speed is typically too slow to protect delicate components like IGBTs from a sudden, high-energy fault. The DNT01-R1N’s Ultra-Rapid Fuse characteristic makes it mandatory for semiconductor safety.

Q: Why is the Low I²t value of the DNT01-R1N so important?

A: The I²t (Ampere-squared seconds) is the measure of the thermal energy permitted to pass through the fuse during a fault. A low I²t value, like that guaranteed by the DNT01-R1N, is critical because it directly dictates the amount of Thermal Stress imposed on the protected semiconductor. By minimizing the I²t and the Peak Let-Through Current, the DNT01-R1N prevents thermal runaway and catastrophic failure, dramatically increasing the reliability and operational lifespan of your entire system.

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