GRL DNPV1XL-S5N Solar Fuse Link DC 1500V 50-250A Ceramic PV Fuse Link Manufacturer

Model No.：

DNPV1XL-S5N

Rated Voltage：

1500V DC

Current Range：

50A, 63A, 80A, 100A, 125A, 160A, 200A, and 250A

Breaking Capacity：

50KA

Protection Category：

gPV

Standards：

GB/T 13539.6 IEC60269-6

Time constant:

1~3ms

Certifications：

CCC, CE

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Description

Solar Fuse Link Overview

The DNPV1XL-S5N Solar Fuse Link is a high-performance photovoltaic protection device developed by GRL Electric for advanced DC power systems. Designed for 1500V DC applications, this PV fuse link provides dependable protection for solar strings, PV arrays, inverters, and other DC components. With a rated current range from 50A to 250A, it ensures safe and efficient current limitation under both normal and fault conditions.

As part of GRL’s professional solar fuse link series, the DNPV1XL-S5N conforms to IEC 60269-6 and GB/T 13539.6 standards, which define performance requirements for fuses used in photovoltaic applications. With its precise gPV characteristics, it ensures full-range protection from overloads to short circuits, offering consistent and reliable operation even under extreme environmental conditions.

Solar Fuse Link Technical Parameters

Model No.	Size	Rated Voltage (V)	Rated Current (A)	I2t(A2S) Pre-Arcing	I2t(A2S) Fusing	0.8In Power dissipation (W)	1.0In Power dissipation (W)	Weight (g)	Mounting
DNPV1XL-S5N-50A/1500V DC	1XL	1500	50	0.78	3	16	14	914±3%	M10 21±1 N.m
DNPV1XL-S5N-63A/1500V DC	1XL	1500	63	0.94	3.7	11	21	914±3%	M10 21±1 N.m
DNPV1XL-S5N-80A/1500V DC	1XL	1500	80	1.3	5.2	14	28	914±3%	M10 21±1 N.m
DNPV1XL-S5N-100A/1500V DC	1XL	1500	100	2.4	9.2	18	33	914±3%	M10 21±1 N.m
DNPV1XL-S5N-125A/1500V DC	1XL	1500	125	4.1	15.7	21	40	914±3%	M10 21±1 N.m
DNPV1XL-S5N-160A/1500V DC	1XL	1500	160	7.6	29.5	24	47	914±3%	M10 21±1 N.m
DNPV1XL-S5N-200A/1500V DC	1XL	1500	200	14.2	55.2	29	54	914±3%	M10 21±1 N.m
DNPV1XL-S5N-250A/1500V DC	1XL	1500	250	28.3	108.4	31	60	914±3%	M10 21±1 N.m

Click to read： How do semiconductor fuse links protect against short-circuit conditions?

Solar Fuse Link Features

The DNPV1XL-S5N PV fuse link adopts a bolt-type terminal connection (M10), designed to provide a secure, vibration-resistant, and low-resistance electrical interface. This structure ensures excellent conductivity and easy installation in compact PV protection systems such as combiner boxes and inverter input circuits.

The fuse element is constructed from high-purity silver, guaranteeing stable melting performance, consistent fusing time, and superior endurance under continuous current loads. Its high-strength ceramic body offers outstanding thermal stability and arc-quenching ability, safely interrupting high DC currents without external damage or gas emission.

The DNPV1XL-S5N’s sealed construction effectively prevents dust, humidity, and oxidation from affecting internal components, ensuring long-term reliability in harsh field conditions such as outdoor photovoltaic farms or high-temperature regions. The overall design ensures excellent heat dissipation, mechanical durability, and ease of maintenance.

DNPV1XL S5N Solar Fuse Link 00

Solar Fuse Link Advantages

The DNPV1XL-S5N Solar Fuse Link offers several key benefits that make it an optimal choice for photovoltaic protection:

High DC voltage capability (1500V DC): Ideal for modern high-power solar arrays and inverter systems.
Wide current range (50A–250A): Supports various PV configurations and power capacities.
Exceptional breaking capacity (50kA): Ensures safe disconnection under fault conditions.
Precision-engineered silver fuse element: Provides stable electrical performance and long operating life.
Bolt-type connection structure: Offers robust and secure installation in compact systems.
Low temperature rise and power loss: Improves system energy efficiency and minimizes component stress.
International standard compliance: Meets IEC and GB/T requirements for PV system protection.
High reliability in extreme environments: Performs consistently under high temperature, humidity, and dust conditions.
Compact size and lightweight design: Facilitates integration into space-limited PV devices.

These advantages ensure that the DNPV1XL-S5N DC fuse link delivers safe, reliable, and efficient protection across a wide range of solar energy applications.

Solar Fuse Link Applications

The DNPV1XL-S5N is widely used in solar photovoltaic power generation systems, providing effective DC circuit protection in:

Solar PV string protection: Prevents backfeed currents between parallel-connected PV modules.
Combiner boxes and DC distribution panels: Isolates faulted circuits quickly to protect system components.
PV inverters: Safeguards DC input terminals from overload or reverse-current faults.
Battery energy storage systems: Protects DC busbars and battery banks in hybrid solar applications.
Renewable energy plants: Suitable for solar farms, rooftop installations, and off-grid systems requiring stable DC protection.

Its M10 bolt connection design ensures tight installation and reliable operation even under continuous vibration or thermal cycling, making it especially suitable for industrial, utility, and commercial PV installations.

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Solar Fuse Link FAQs

1、What is a solar fuse link?

A solar fuse link, or PV fuse link, is a protective component used in photovoltaic systems to disconnect the circuit when an overcurrent or short-circuit fault occurs. It prevents damage to solar panels, inverters, and conductors by quickly breaking the DC path and stopping potential reverse energy flow.

2、Where should the fuse be installed in a solar system?

In a solar system, PV fuse links are typically placed within combiner boxes, junction boxes, and at the inverter input. Each solar string usually requires its own fuse link to protect individual module rows, ensuring one faulty string does not affect the entire array.

3、Why do solar panels need fuses?

Solar panels need fuses to prevent overcurrent and short-circuit events that could lead to overheating, equipment failure, or fire hazards. The DNPV1XL-S5N’s gPV-rated protection ensures fast, accurate, and safe disconnection, keeping the photovoltaic system secure and compliant.

4、What is the difference between a gPV fuse and a standard DC fuse?

A gPV fuse like the DNPV1XL-S5N is designed specifically for photovoltaic applications, capable of handling continuous DC currents and high transient voltages. Unlike general-purpose DC fuses, gPV fuses protect both against overloads and short circuits across the entire current range of the PV system.

5、How can I choose the correct fuse for my solar installation?

When choosing a PV fuse link, match the fuse voltage rating (e.g., 1500V DC) with your system voltage, select the appropriate current rating based on circuit requirements, and ensure compliance with IEC 60269-6. The DNPV1XL-S5N series covers multiple current options to meet different installation needs.

Conclusion

The DNPV1XL-S5N Solar Fuse Link by GRL Electric combines advanced engineering, reliable performance, and global standard compliance to deliver optimal circuit protection for 1500V DC photovoltaic systems. With its robust bolt-type connection, precision fuse element, and superior arc suppression capability, it ensures long-term operational safety and energy efficiency across all PV applications.

Whether used in solar power plants, commercial rooftops, or energy-storage-integrated systems, the DNPV1XL-S5N stands out as a dependable DC fuse link solution that protects your investment and maintains continuous solar system performance.

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