Solar Accessories

USFULL Solar PV Combiner Box

USFULL FUCB series solar pv combiner box is water proof, dust proof, with the function of overload protection, lightning protection, over current protection, etc. The combiner box meet the requirement of long time use for both outdoor and indoor situation.


a. High reliability:
DC Fuse, DC Surge Protecion Device, DC Circuit Breaker, anti-reverse diode
b. Strong adaptability:
1. IP65 design, waterproof, anti dust and anti ultraviolet
2. Strict test for high and low temperature


Solar combiner box is a complete set of devices to link PV inverter and PV arrays orderly in the PV generation system to ensure the photovoltaic performance.

USFULL FUCB series solar combiner box offers overload protection, lightning protection, over-current protection, etc. The DC input number of our solar combiner box is from 1 string to 24 strings according to the requirement of project. The combiner box meets the requirement of long time use for both outdoor and indoor situation.

USFULL combiner box is exquisite, durable and convenient to install, with IP 65/66 protection level, waterproof and dustproof, meeting the requirements of long-term and uninterrupted outdoor use.


Solar combiner box is equipped with surge protective device, circuit breaker, isolating switch, fuse to provide isolation, leakage protection and grounding protection to ensure the safety during maintenance and inspection and to reduce the scope of power outages when the photovoltaic system fails.

The solar combiner box is frequently used in the solar energy system and solar irrigation system to achieve safe power supply. The function of the combiner box is current convergence, lightning protection, overload protection and over-current protection.

Basically, the user connects a certain number of photovoltaic cells with the same specifications in series to form a photovoltaic string, and then connects several photovoltaic strings in parallel to combiner box. Then, the converged DC current will power the solar pump inverter or PV inverter for production and daily life.

For different projects, you can choose 6ways, 10ways, 12ways, 16ways, 24ways and so on to meet your actual requirement.


A solar combiner box is an electrical enclosure in which several solar circuit components are housed. Here in USFULL, we provide customization to meet our customers’ or projects’ preferences.
We offer multiple customizable options, including your logo, box material, circuit components, DC input and output, voltage, input connector and RS-485 monitoring unit. Please contact us to customize your solar combiner box.

All the solar combiner boxes are packed well in case of the damage during transportation. Each combiner box is in a carton case or wooden with EPE Foam to ensure the safe delivery.

If you have more inquiry for plastic case DC Combiner Box, you can check from our website to get more.

Welcome to send us inquiry and discussion the suitable solution for your project!

Specification (PV Combiner Box):
Number of DC Inputs 2 4 6 8 10 12 14 16 18 20 22 24
Material of Box Coated Iron
Protection Level IP65/IP66
IK Impact Resistance Class IK08
Max Rated Voltage DC 1000V
DC Fuse 15A (Recommend 15A, support other ampre)
Fuse Holder 1000V DC 30 A
DC Breaker 32A 63A 100A 125A 150A 200A 225A 250A 275A 300A 315A 350A
Surge Protection DC Type II In=20KA, Imax=40KA, Ucpv=1000V DC
Over-Voltage Category Cat III
Diode for The Function of Anti-Reflux Built-in
Connection Type DC Input PG09, IP68
Input Cable Size for Negative and Positive Φ4-8mm
Number of DC Outputs 1 (Support customize for output number)
Connection Type DC Output PG11 PG11 PG13.5 PG19 PG19 PG25 PG25 PG25 PG29 PG29 PG29 PG29
Gland Connectors Material: Nylon Plastic, Seals: Nitrile Rubber Buna, IP68
Ambiant Temperature Range/Humidity Temperature: -20°C~+ 60°C, Humidity: 0-99%
Altitude ≤2000m. Derating for above 2000m.
Installation Wall mounting/Padlockable latch


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Contact Us

USFULL specializes in solar pumping inverter and variable frequency drive. The product technology research and development is constantly updated. The shell design is patented. We only make products that make customers happy.

24-hour service phone:0086-577-61728833

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