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GRL DNT1-O1J Semiconductor Fuse: The 800V DC Standard for Ultra-Rapid PV Fuse Protection

Model No.:
DNT1-O1J
Rated Voltage:
1000V AC
Current Range:
160-630A
Breaking Capacity:
100kA
Protection Category:
aR
Standards:
GB/T 13539.4、IEC 60269-4
Certifications:
CCC CE TUV
Description

DNT1-O1J Semiconductor Fuse Overview

The GRL DNT1-O1J Series is a specialized Ultra-Rapid Fuse meticulously engineered for the demanding world of Photovoltaic (PV) Systems. Specifically designed for DC 800V applications, this fuse provides essential Solar Fuse Protection against overcurrents and short-circuits in critical solar infrastructure.

Operating within the stringent gPV Fuse Class (General Purpose Photovoltaic), the DNT1-O1J ensures the absolute fastest Fault Clearing for valuable PV assets. Unlike standard industrial fuses, its unique characteristics are optimized for the specific challenges of solar arrays, offering unparalleled protection for solar panels, PV strings, and solar inverters. By achieving an Extremely Low I^2t Value, it minimizes fault energy let-through, preventing costly damage and maximizing System Reliability for Utility-Scale Solar installations and commercial PV plants. For engineers prioritizing robust DC Protection and long-term asset integrity in Renewable Energy Systems, the GRL DNT1-O1J is the definitive PV System Protection solution.

 

DNT1-O1J Semiconductor Fuse Technical Parameters

Model No. Size Ue
(V)
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
DNT1-O1J-160A/1000V AC 1 1000 160 2200 13500 7 23.5 40 573±3% M10
21±1N.m
DNT1-O1J-200A/1000V AC 1 200 4150 24500 8.5 26.5 45
DNT1-O1J-250A/1000V AC 1 250 7750 46000 10 31 52
DNT1-O1J-315A/1000V AC 1 315 16500 98500 11 35 60
DNT1-O1J-350A/1000V AC 1 350 21500 130000 12 38 65
DNT1-O1J-400A/1000V AC 1 400 31000 185000 13 41 70
DNT1-O1J-450A/1000V AC 1 450 44500 265000 15 47 80
DNT1-O1J-500A/1000V AC 1 500 63000 375000 16 50 85
DNT1-O1J-550A/1000V AC 1 550 84500 500000 17 53 90
DNT1-O1J-630A/1000V AC 1 630 125000 755000 19 58 98

DNT1-O1J Semiconductor Fuse Features

The GRL DNT1-O1J integrates specialized features to address the unique challenges of PV System Protection.

  • gPV Full-Range Protection: As a gPV Fuse, it provides both short-circuit and overload protection for PV strings and solar panels, simplifying system design and enhancing safety. This is a critical differentiation from general-purpose fuses.
  • Optimized for DC 800V: Internal elements are specifically designed to safely interrupt challenging DC Fault Clearing currents, which do not naturally drop to zero, ensuring reliable operation at the rated DC 800V.
  • Extremely Low I^2t Value: This ensures that in the event of a fault, the fuse melts extremely fast, limiting the thermal energy passed to the protected components. This prevents damage to sensitive solar inverters and maximizing the lifespan of PV modules.
  • Compact Cylindrical Design: The standard cylindrical form factor (various dimensions available) allows for flexible integration into PV combiner boxes, DC switch disconnectors, and other compact Photovoltaic Disconnect solutions.
  • Durable Construction: Built with high-quality materials to withstand harsh environmental conditions, including temperature extremes and UV exposure, common in Utility-Scale Solar installations.

DNT1-O1J Semiconductor Fuse Advantages

Choosing the DNT1-O1J is an investment in the longevity and efficiency of your solar energy assets:

  1. Dedicated PV System Safety: As a purpose-built Solar Fuse, it offers superior DC Protection tailored to the unique fault characteristics of photovoltaic arrays, preventing damage and costly component replacement.
  2. Maximized Energy Harvest: By ensuring rapid Fault Clearing, the DNT1-O1J minimizes system downtime and helps maintain continuous power generation, optimizing the overall Renewable Energy Systems performance.
  3. Enhanced Reliability: Its robust construction and IEC 60269-6 compliance guarantee long-term System Reliability and peace of mind for both Utility-Scale Solar operators and commercial installers.
  4. Simplified Compliance: Meeting international PV standards (IEC and UL) streamlines design and certification processes for global deployment, making it a globally trusted Photovoltaic Protection solution.

DNT1-O1J Semiconductor Fuse Applications

The GRL DNT1-O1J is the indispensable component across the rapidly expanding solar energy sector:

  • Photovoltaic Combiner Boxes: Essential for PV string protection against overcurrents and ground faults, isolating damaged strings to prevent cascading failures.
  • Solar Inverters: Providing crucial input protection for DC 800V solar inverters and MPPT (Maximum Power Point Tracking) units, safeguarding sensitive internal electronics.
  • DC Switch Disconnectors: Integrated into PV disconnect solutions to ensure safe maintenance and rapid shutdown capabilities for solar arrays.
  • Commercial & Utility-Scale Solar Farms: A fundamental building block for Utility-Scale Solar installations, ensuring the continuous and safe operation of large PV Power Plants.
  • Battery Energy Storage Systems (BESS): Providing critical overcurrent protection within smaller BESS installations directly connected to DC 800V solar circuits.

DNT1-O1J Semiconductor Fuse FAQs

Q: What is the main difference between a gPV fuse and a standard industrial fuse for solar applications?

A: The gPV Fuse Class (like the DNT1-O1J) is specifically designed and tested for the unique fault conditions of photovoltaic systems, particularly the challenging low-level, long-duration overcurrents that can occur from shaded or damaged solar panels. Standard industrial fuses (e.g., gG/gL) are not optimized for these specific characteristics and may not provide adequate PV string protection, leading to potential fire hazards or system damage.

Q: Why is an Extremely Low I^2t Value important for Solar Inverter Protection?

A: A low I^2t value means the fuse clears the fault very quickly, limiting the amount of thermal energy passed to the protected components. For sensitive solar inverters and MPPT units, this rapid Fault Clearing is vital to prevent internal semiconductor damage, especially during short-circuit events from PV strings. It directly contributes to the longevity and System Reliability of your Renewable Energy Systems.

Q: Is the DNT1-O1J compliant with both IEC and UL standards for solar fuses?

A: Yes, the GRL DNT1-O1J is designed to meet both IEC 60269-6 and UL 2579 standards. This dual certification ensures its global acceptance and suitability for diverse Photovoltaic Fuse installations worldwide, providing peace of mind for international projects and regulatory compliance.

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