Overcurrent Protection of Solar Panel Harness——Reliable Safety and Efficiency for Your PV System

Introduction

In photovoltaic (PV) power systems, overcurrent protection plays a crucial role in ensuring the safety and reliability of electrical circuits. Overcurrent events, caused by faults or mismatched strings, can lead to cable overheating, component damage, or even fire hazards if not properly managed.

Jera Line’s Overcurrent Protection Solutions for solar panel harnesses are designed to protect each PV string or array from excessive current flow, enhancing system durability and performance.

Components of Overcurrent protection of solar panel harness

The overcurrent protection system integrates high-quality components to ensure consistent performance in demanding solar environments.

Key components include:

1. PV Fuse Link — provides fast and reliable circuit interruption during overcurrent or short-circuit conditions.
2. Fuse Holder (MC4-compatible) — ensures secure, waterproof, and tool-free connection between PV cables.

• PV Cable Harness — pre-assembled harness with integrated fuse protection for easy and safe installation in solar arrays.
• Sealing Components and Contacts — UV-resistant and weatherproof materials for long-term outdoor performance.

These components work together to prevent cable overheating, improve system safety, and enhance the overall reliability of your solar installation.

Key Models

Jera Line offers overcurrent protection components compatible with various PV string configurations and current ratings, including:

• FHp-435-20x85 PV Fuse — designed for high-efficiency DC protection up to 1000V, ensuring low power loss and fast fault response.
• MC4 Fuse Holder — compatible with standard PV connectors, providing IP68 protection, stable conductivity, and easy replacement of fuses without dismantling the system.

These models ensure efficient overcurrent protection and safe disconnection for maintenance or system upgrades.

Key features

• High breaking capacity fuse designed for DC photovoltaic systems.
• Quick-response protection against overcurrent and short circuits.
• Compatible with standard MC4 PV connectors for easy integration.
• UV and weather-resistant housing for outdoor durability.
• Low contact resistance and minimal power loss.
• Rated voltage up to 1500V DC, with different current rating fuse choice.
• Third party tested according to NFC-33020.

Why choose Jera Line Overcurrent Protection for Solar Panel Harness

• Direct factory production in China, ensuring cost-effective and reliable quality.
• Comprehensive solution, including fuse links, holders, and harness assemblies.
• Tested according to NFC standards in accredited laboratories.
• Optimized for solar string systems, improving system safety and lifespan.
• Designed for easy installation and global compatibility with common PV connectors and cable types.

Conclusion

The Jera Line Overcurrent Protection for Solar Panel Harness provides a complete, reliable, and efficient safety solution for photovoltaic systems.

With high-quality fuses, fuse holders and preassembled harnesses, Jera Line ensures maximum protection, reduced maintenance, and enhanced system reliability in all solar installations — from residential rooftops to large-scale solar farms.

If you have any inquires, please feel free to contact.