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Combiner Box

BOOST YOUR BUSINESS WITH USFULL HIGH-TECH VARIABLE FREQUENCY DRIVE SOLUTIONS

USFULL’s Combiner Boxes feature premium materials, smart layout, and strict quality control—ensuring safe, efficient solar integration. Designed to streamline wiring and improve protection, they reduce installation time and system risks. With customizable options and certified components, they boost the performance and competitiveness of your solar projects.

Overload Protection

USFULL Combiner Boxes are equipped with advanced overload protection to ensure system safety and long-term reliability. When the current through the circuit exceeds the rated capacity—due to faults or abnormal loads—the protection mechanism quickly isolates the affected string. This prevents overheating, cable damage, and potential fire hazards. By automatically disconnecting the overloaded circuit, the system stays stable while protecting both equipment and personnel. This feature is essential for maintaining consistent energy output and prolonging the service life of the solar installation.

Lightning Protection

Lightning protection is a critical component of USFULL Combiner Boxes, especially in outdoor and remote solar installations. Our boxes integrate high-quality surge protection devices (SPDs) that rapidly divert transient overvoltages caused by lightning strikes or grid disturbances away from sensitive components. This reduces the risk of equipment failure, system downtime, and costly repairs. The protection system is compliant with international safety standards, ensuring your solar infrastructure operates reliably even in harsh weather. With USFULL’s robust lightning protection, you can ensure safer operation and longer system lifespan.

Combiner Box

DC Combiner Box

Handling DC Circuits

Plastic/Coated Iron

IP65/IP66

Overload Protection

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DC/AC Hybrid Combiner Box

Handling DC/AC Circuits

Plastic/Coated Iron

IP65/IP66

Overload Protection

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AC Combiner Box

Handling AC Circuits

Plastic/Coated Iron

IP65/IP66

Overload Protection

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Contact Us to Customize Your Solution!

Unlock the power of the sun with custom-crafted solutions. Connect with us today and step into a brighter, more efficient tomorrow tailored just for you!

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APPLICATIONS OF COMBINER BOX

A combiner box is used in solar power systems to combine the output of multiple solar panel strings into a single DC output. It helps organize wiring, simplifies installation, and provides protection through fuses, circuit breakers, and surge protection devices. Commonly used in large-scale and rooftop solar installations, it improves system safety, reliability, and maintenance efficiency.

Production Capacity

USFULL’s manufacturing base covers over 15,000 square meters and houses more than a dozen production lines, including lines for variable frequency drives, photovoltaic accessories, SMT, and automatic PCB coating. Equipped with advanced automation equipment, our facility significantly boosts productivity while ensuring high product quality and stable output. Modern production technology is the backbone of USFULL’s consistent performance and reliable supply capacity.

OUR CERTIFICATION

We believe that leadership and excellence in supplying our customers with quality products is essential to our long-term competitiveness, that’s why we incessantly invest significant resources to always obtain the required highest standards of quality and reliability.
The certifications USFULL has gained throughout the years are a visible proof of our commitment: TUV, CE, INMETRO, IEC, and more.
Feel free to contact us should you need further details or clarifications on the certified quality of our products.