GRL DNPV2XL-S5R Solar Fuse Link DC 1500V 50-250A Ceramic PV Fuse Link Manufacturer

Model No.：

DNPV2XL-S5R

Rated Voltage：

1500V DC

Current Range：

125A to 400A

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 GRL DNPV2XL-S5R series solar fuse link is a high-capacity, high-speed DC circuit protection device tailored for the complex demands of 1500V photovoltaic systems. Rated from 125A to 400A, this photovoltaic fuse link is defined by its ‘R’ installation form, the Spiral connection type (contactor turns 90°). This unique feature provides engineers with unparalleled flexibility for secure integration into customized or space-constrained switchgear and PV combiner box fuse link designs.

As renewable energy experts know, what is a solar fuse? A solar fuse, or PV fuse link, is a specialized protective element that complies with IEC 60269-6. It is calibrated to rapidly interrupt the sustained low-level fault currents unique to PV arrays, ensuring precise overcurrent protection that standard fuses cannot provide. The DNPV2XL-S5R delivers first-class protection for large PV strings and array aggregation points, supporting major commercial and residential utility projects.

GRL is a specialized Manufacturer and reliable Supplier. The DNPV2XL-S5R’s blend of high power handling and installation versatility makes it a critical component for power grid modernization across Europe, significant solar farms in the Asia-Pacific, and large-scale energy infrastructure development in Africa.

Solar Fuse Link Technical Parameters

Model No.	Size	Rated Voltage (V)	Rated Current (A)	I2t(A2S) Pre-Arcing	I2t(A2S) Fusing	0.5In Power dissipation (W)	0.8In Power dissipation (W)	1.0In Power dissipation (W)	Weight (g)	Mounting
DNPV2XL-S5R-125A/1500V DC	2XL	1500	125	3.8	14	4	8	14	914±3%	M10 21±1 N.m
DNPV2XL-S5R-160A/1500V DC	2XL	1500	160	7.6	27	5	11	21	914±3%	M10 21±1 N.m
DNPV2XL-S5R-200A/1500V DC	2XL	1500	200	15.7	56.1	7	14	28	914±3%	M10 21±1 N.m
DNPV2XL-S5R-250A/1500V DC	2XL	1500	250	30.3	108	8	18	33	914±3%	M10 21±1 N.m
DNPV2XL-S5R-315A/1500V DC	2XL	1500	315	56.8	201.8	9	21	40	914±3%	M10 21±1 N.m
DNPV2XL-S5R-350A/1500V DC	2XL	1500	350	7.6	29.5	11	24	47	914±3%	M10 21±1 N.m
DNPV2XL-S5R-400A/1500V DC	2XL	1500	400	14.2	55.2	13	29	54	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 DNPV2XL-S5R is constructed for superior safety and reliability, leveraging the flexibility of the Spiral connection.

The ‘R’ Connection Advantage

The Spiral connection type (R) features a 90° turn on the contactor, enabling highly adaptable cable routing and terminal orientation within compact enclosures. This high-voltage PV fuse link is secured via a bolted connection (M10 mounting, 21±1N.m torque), ensuring a stable, low-resistance interface. The core construction utilizes a ceramic PV fuse link body and pure silver element, guaranteeing long-term mechanical strength and electrical efficiency.

Safety and Remote Monitoring Capabilities

GRL’s containment technology ensures that all fault energy is safely absorbed internally (no degassing), significantly improving operational safety at the array level. For enhanced operation, the system supports integration with smart grid monitoring technologies via optional remote contact signaling, facilitating rapid fault localization and minimizing downtime across geographically dispersed sites.

GRL DNPV2XL S5R Solar Fuse Link 2

Solar Fuse Link Advantages

The DNPV2XL-S5R provides the specialized high-current protection needed for major PV assets.

Installation Versatility: The Spiral connection type is ideal for non-standard or space-constrained applications, offering design flexibility that simplifies installation costs and reduces time.
PV-Specific Isolation: The gPV certification guarantees precise overcurrent protection tailored for the unique fault modes of PV arrays, maximizing system reliability.
Absolute Consistency: The reliance on the Joule effect ensures the protective characteristics exhibit no degradation over time, offering guaranteed reliability for the entire system lifespan.
Superior High-Current Safety: The 50kA high breaking capacity provides full assurance against the maximum potential short-circuit fault current at the 1500V array aggregation point.

GRL is a committed Producer and Exporter, offering highly competitive PV fuse link price solutions and reliable supply for global projects.

Solar Fuse Link Applications

The DNPV2XL-S5R is the protection choice for engineers requiring high current handling with installation adaptability.

Essential Circuit Protection

Inverter DC Input Protection: Essential for securing the high-current DC side of central and large string photovoltaic inverters.
Array Aggregation Points: Used in PV combiner boxes and re-combiner boxes where current from multiple strings is consolidated.
Custom Switchgear: The adaptable terminal is perfect for integrating into custom or compact power enclosures.

Addressing FAQs: Protection, Placement, and Sizing

Do solar panels need fuses? Yes. Fuses are required to protect the module and PV string wiring from reverse current damage caused by healthy strings during a fault in a parallel system. The fuse acts as the critical current-limiting device.

Where should the fuse be located in a solar system? Solar fuses are installed on the DC side of the system. High-capacity fuses like the DNPV2XL-S5R are typically placed at the main array output or the inverter’s DC input terminals, serving as array-level protection.

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Solar Fuse Link FAQs

1、How does the 2XL size differ from the 1XL size?

The 2XL size (DNPV2XL) handles a higher current range (125A–400A) and is physically larger than the 1XL size (DNPV1XL, 50A–250A), making the 2XL suitable for array aggregation, while the 1XL is typically used for individual PV string protection.

2、Why is low power dissipation important at the 400A current level?

At high current levels, resistive losses generate substantial heat. The DNPV2XL-S5R’s low power dissipation minimizes this heat, which is vital for maintaining the integrity and lifespan of high-current busbars, terminals, and the entire enclosure, especially in high-temperature environments.

3、Where can I find compatibility information for GRL fuse holders?

The official PV fuse link datasheet and 1500V PV fuse link catalog PDF provide specific information on compatible GRL fuse holders (such as the DNPVF series) that accept the 2XL size fuse link.

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