Solar Fuse Link Advantages
The DNPV2XL-S5N offers superior reliability at the array level.
- Mechanical Integrity: The bolted Hook type connection ensures long-term resistance to vibration and thermal expansion, making it ideal for remote or outdoor installations.
- High Performance gPV: Compliance with IEC 60269-6 guarantees precise protection tailored to PV array characteristics, maximizing system uptime and protecting high-value assets.
- Efficient Thermal Management: The low power dissipation profile contributes to cooler operation and prolonged component life, a major advantage for global customers seeking to reduce operational expenditure.
- Absolute Reliability: Based on the simple Joule effect, the fuse characteristics show no degradation over time, ensuring consistent protection throughout the asset’s lifespan.
GRL is a reliable Exporter that supports projects worldwide with large volume capacity and competitive PV fuse link price solutions.
Solar Fuse Link Applications
The DNPV2XL-S5N is the ideal centralized protection element for major PV infrastructure.
Essential Circuit Protection
- Inverter DC Input Protection: Protecting the high-capacity DC input side of central and large string photovoltaic inverters.
- High-Capacity Combiner Boxes: Used where multiple strings aggregate their current before being routed to the inverter.
- Array Main Line Protection: Safeguarding main feeder cables from the PV array to the power conversion stage.
Addressing FAQs: Protection Logic and Placement
Do solar panels need fuses? Yes. Fuses are essential to protect the PV string from reverse current fed by healthy parallel strings during a fault, preventing modules from exceeding their maximum series fuse rating.
Where should the fuse be located in a solar system? Solar fuses are primarily installed in the PV combiner box or disconnect units. High-capacity fuses like the DNPV2XL-S5N are typically located where multiple strings converge, often closer to the inverter or main DC switchgear.
Solar Fuse Link FAQs
1、What does the 2XL size denote for the DNPV2XL-S5N?
The ‘2XL’ size signifies a larger physical format and a higher current rating capacity, covering 125A to 400A, making it suitable for array aggregation and centralized protection.
2、Is there an equivalent plug-in (Knife) version of this fuse?
Yes, the DNPV2XL-S5D is the Knife type contactor equivalent, offering the same electrical performance (1500V, 125A–400A, 50kA) but with a different terminal style for plug-in mounting.
3、Where can I find the cut-off current curve for the DNPV2XL-S5N?
All detailed technical curves, dimensions, and specifications are documented in the PV fuse link datasheet and the comprehensive 1500V PV fuse link catalog PDF, available for download.
4、Why is the 50kA breaking capacity important at the 400A level?
The 50kA high breaking capacity ensures that even if a major short-circuit occurs at the aggregated array level, the fuse can safely and effectively interrupt the extremely high fault current at 1500V DC, preventing catastrophic failure and maintaining system safety.
