New LQX-N Series PV Combiner Box Released: Comprehensive Upgrades for Safety and Convenience

In any photovoltaic (PV) system, the combiner box may seem like a small component, but it plays a critical role in collecting multiple DC strings and feeding them safely to the inverter. It must withstand harsh outdoor environments while providing reliable protection for maintenance personnel.

Building on our proven LQX-A series, we are proud to introduce the all-new LQX-N series PV combiner box. This next-generation product delivers significant improvements in water protection, electrical safety, security, and installation convenience — making it a smarter, safer choice for your solar power plant.

1. Waterproof Rating Upgraded: From IP65 to IP67

Outdoor PV installations often face heavy rain, flooding, and high humidity. While the LQX-A series already offered a solid IP65 rating, the new LQX-N series takes water protection to IP67.

This means the enclosure is not only completely dust-tight but can also withstand temporary immersion in water (up to 1 meter deep for 30 minutes) without damage. For projects in low-lying areas, floating PV systems, or regions with frequent heavy rainfall, this upgrade provides an extra layer of safety and peace of mind.

2. Internal Safety Upgrade: Anti-Touch Barrier with Transparent PC Cover

DC circuits inside a combiner box carry high voltage. When maintenance personnel open the box for inspection or repair, the risk of accidental contact with live parts is always present.

The LQX-N series addresses this with a newly added anti-touch barrier that effectively isolates live components from the operator. What makes this barrier unique is its transparent PC material — technicians can clearly see the internal status of fuses, terminals, and other components without removing the barrier. Signs of trouble, such as a blown fuse, loose connection, or discoloration from overheating, are immediately visible.

This design achieves both safety and efficiency: it protects personnel from accidental contact while allowing quick visual inspections, helping to identify potential issues before they become serious problems.

3. External Security Upgrade: Reinforced Latch and Padlock Compatible

Combiner boxes are often installed in unattended locations. Preventing unauthorized access is a real concern for asset management.

The LQX-N series features a completely redesigned door locking system. The reinforced latch is stronger and more durable than previous designs. In addition, the enclosure is now padlock-compatible — users can easily add a padlock or dedicated lock to restrict access. Only authorized personnel can open the box, effectively preventing tampering, accidental operation, or vandalism. Your PV assets are now more secure than ever.

4. Installation Innovation: Metal Hooks — No Drilling Required

Traditional combiner boxes often require drilling holes in the enclosure for mounting brackets. This process is not only time-consuming but can also compromise the box's structural integrity and weather sealing.

The LQX-N series introduces a completely new mounting system: metal hooks on the back panel. Installation is simple — just hang the box onto a pre-installed rail or bracket. No drilling into the enclosure is required. This innovation greatly simplifies the installation process, allowing a single worker to complete the job quickly and safely. It also preserves the enclosure's integrity and sealing performance. For rooftop distributed projects or any elevated installation, this design significantly reduces labor and safety risks.

5. Proven Quality That Remains: High Strength, High Protection

While introducing key upgrades, the LQX-N series retains the proven durability of the LQX-A series:

Flame Retardancy: The PC ABS enclosure material achieves a UL94 V-0 rating — it self-extinguishes within seconds and does not produce flaming droplets, providing essential fire safety at the material level.

Impact Resistance (IK10): The enclosure is rated IK10, meaning it can withstand an impact energy of 20 joules — equivalent to a 5 kg weight dropped from 40 cm. Even in the event of accidental collisions during transport, installation, or operation, the box remains intact and functional.

UV Resistance: The PC ABS material is specially formulated to resist UV degradation. Even under long-term outdoor exposure in high-sunlight regions, it resists yellowing, cracking, and brittleness, ensuring long-term reliability.

6. Summary

The new LQX-N series PV combiner box builds on the成熟 foundation of the LQX-A series while addressing real-world pain points with systematic improvements:

Stronger water protection: IP67 — rain and temporary immersion are no longer a concern.

Safer interior: Anti-touch barrier transparent PC cover — protects personnel while allowing easy visual inspection.

More secure exterior: Reinforced latch padlock compatibility — prevents unauthorized access.

Easier installation: Metal hooks on the back — no drilling required, single-person installation.

Uncompromised quality: UL94 V-0 flame retardancy, IK10 impact resistance, UV-stabilized material — meeting the highest standards.

Whether you are managing a large ground-mounted power plant, a commercial rooftop system, a floating PV installation, or a residential project, the LQX-N series offers a safer, more reliable, and more convenient combiner box solution.

Contact us today to learn more about the LQX-N series and find the right configuration for your project.