GRL DNPV3L-S5R Solar Fuse Link DC 1500V 250A–630A Ceramic PV Fuse Link Manufacturer

Model No.：

DNPV3L-S5R

Rated Voltage：

1500V DC

Current Range：

250A to 630A

Breaking Capacity：

50KA

Protection Category：

gPV

Standards：

GB/T 13539.6 IEC60269-6

Time constant:

1~3ms

Certifications：

CCC, CE

Certification Download PDF Contact Us

Description

Solar Fuse Link Overview

The GRL DNPV3L-S5R series solar fuse link delivers maximum-capacity, high-speed DC protection, essential for safeguarding the largest 1500V DC photovoltaic (PV) power assets. This photovoltaic fuse link handles currents from 250A up to 630A. Its ‘R’ designation highlights the adaptable Spiral connection type (contactor turn 90°), which provides crucial installation flexibility for connecting high-capacity lines into custom or space-constrained central photovoltaic inverters switchgear.

For technical decision-makers: What is a solar fuse? It is a mandatory gPV fuse link, certified under IEC 60269-6, specifically engineered to manage the unique fault signatures of PV arrays, including sustained low overcurrents and extreme short-circuit currents. The DNPV3L-S5R ensures consistent, high-performance protection for the most critical power assets.

GRL, a dedicated Manufacturer and Supplier, is at the forefront of supporting global energy needs. The DNPV3L-S5R’s blend of high performance and flexibility makes it suitable for massive solar installations across the Asia-Pacific, compliant projects in Europe, and complex infrastructure requirements in Africa.

Solar Fuse Link Technical Parameters

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

Solar Fuse Link Features

The DNPV3L-S5R is constructed for maximum durability and unique installation flexibility.

The Flexible ‘R’ Connection

The defining feature is the Spiral connection type (R), which allows the contactor orientation to be adjusted by 90°. This feature is invaluable for complex, high-current wiring runs in centralized DC switchgear, enabling efficient use of vertical or horizontal space. The connection is securely bolted (M10 mounting, 21±1N.m torque) [1], and the construction relies on a durable ceramic PV fuse link body and pure silver element for superior high-power performance and thermal resistance.

Safety and Smart Readiness

Safety is non-negotiable: the robust 3L cartridge ensures complete containment of fault energy (no degassing) during arc quenching at 1500V DC.[5] This high voltage PV fuse link is optimized for smart grid applications; when paired with compatible fuse bases, it facilitates remote contact signaling for real-time fault identification and minimal downtime.

GRL DNPV3L S5R Solar Fuse Link 1

Solar Fuse Link Advantages

The DNPV3L-S5R combines high-capacity protection with crucial installation adaptability.

Installation Versatility: The Spiral connection type (R) offers essential flexibility for fitting high-capacity protection into custom and space-constrained power infrastructure designs.
Highest Safety Rating: The 50kA high breaking capacity provides unmatched assurance against the most intense short-circuit currents in large utility-scale systems.
Efficiency: The minimal watts lost, ensured by low power dissipation, maximizes energy harvest and reduces component heat stress, improving long-term ROI.
Guaranteed Performance: Full adherence to IEC 60269-6 and no degradation over time ensures reliable, predictable protection for the entire asset lifecycle.

GRL is a specialized Producer and Exporter, offering superior supply chain stability and competitive PV fuse link price solutions globally.

Solar Fuse Link Applications

The DNPV3L-S5R is the crucial protection layer for the main power path to the inverter.

Essential Circuit Protection

Central Inverter DC Input: The primary protection for the DC busbars and input terminals of large, centralized photovoltaic inverters.
Main Array Disconnects: Used in high-current disconnect units at the array output, managing up to 630A DC.
Large-Scale Utility Solar Parks: The core protection component for systems requiring high-amperage isolation.

Addressing FAQs: Protection Logic

Do solar panels need fuses? Yes. Fuses are required on PV strings to protect against reverse current. The DNPV3L-S5R complements this by providing array-level overcurrent and short-circuit protection for the main power lines.

Where should the fuse be located in a solar system? Solar fuses must be on the DC side. The DNPV3L-S5R is installed in the main DC switchgear, immediately protecting the high-value central photovoltaic inverter.

Click to download product catalog

Solar Fuse Link FAQs

1、What documents are required for engineers to correctly install and size the DNPV3L-S5R?

Engineers should refer to the PV fuse link installation guide for mounting instructions and the official PV fuse link datasheet (or the 1500V PV fuse link catalog PDF) for precise time-current curves, values, and dimensional drawings necessary for accurate PV fuse sizing.

2、Is the Spiral connection type as robust as the Hook type for high current?

Yes. Both the Spiral (R) and Hook (N) connections utilize a bolted interface (M10), ensuring a secure, low-resistance, and highly robust electrical connection, with the Spiral type offering directional flexibility.

3、How does GRL support large international projects for this 630A fuse?

GRL is a reliable Exporter with the capacity to supply high-volume, fully compliant IEC 60269-6 fuses with competitive PV fuse link price solutions, backed by expert technical support for projects across Asia, Europe, and Africa.

Click to view GRL LinkedIn >>

Click to view GRL YouTube>>