China Photovoltaic Equipment Supplier

Junray Electric is a manufacturer specializing in the R&D, production, and export of photovoltaic equipment. With over a decade of industry experience, our CE-certified products are exported to more than 40 countries and regions worldwide. We provide one-stop solutions—ranging from design and manufacturing to on-site technical support—for residential, C&I (commercial and industrial), and utility-scale ground-mounted PV power plants.

Product Series

1. PV Grid Connection Box

A core interface device connecting distributed PV systems to the public grid, integrating energy metering, electrical protection, and intelligent control.

Power Range: 1kW – 200kW

Key Functions: Overcurrent/short-circuit/over-under voltage protection, anti-islanding protection, intelligent reclosing, energy metering

Protection Rating: IP54 / IP65

Applications: Residential rooftop PV, C&I rooftop PV, agricultural PV

2. PV Combiner Box

A device that aggregates currents from multiple PV module strings and outputs them to the inverter, providing comprehensive DC-side protection.

Input Channels: 4 to 24 channels

Key Functions: Multi-channel aggregation, DC fuse protection, reverse polarity protection, lightning protection, intelligent monitoring (optional)

Rated Voltage: DC 1000V / 1500V

Applications: Utility-scale ground-mounted PV plants, mountainous PV, fishery-PV complementary projects, agriculture-PV complementary projects

3. PV Prefabricated Substation

A complete substation unit integrating step-up transformers, high/low-voltage switchgear, inverters, and monitoring systems; factory-preassembled and commissioned for immediate on-site installation and use.

Capacity range: 500kVA – 5000kVA

Core functions: Step-up transformation, integrated control, intelligent O&M, environmental monitoring, fire protection system

Voltage ratings: High voltage (10kV/35kV), Low voltage (0.4kV/0.69kV)

Applications: Large-scale centralized PV power plants, wind-solar hybrid power plants, integrated PV-plus-storage projects

4. PV Distribution & Control Cabinet

AC/DC power distribution and automation control equipment for PV power plants, enabling functions such as power distribution, data acquisition, and remote monitoring.

Customized design: Flexible configuration based on project requirements

Core functions: AC/DC power distribution, data acquisition, remote communication, logic control

Applications: Auxiliary equipment for various types of PV power plants

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PV Combiner Box

Junray Electrical is a professional manufacturer and factory of PV Combiner Boxes in China. This model supports the combination of up to 24 PV module strings and integrates multiple protection features, including fuses, surge protection devices (SPDs), and circuit breakers. It offers IP65 outdoor protection, intelligent monitoring, and dual power supply modes. Customizable to specific needs, it is widely suitable for DC string combination and protection scenarios in various photovoltaic power plants.

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SVG High Voltage Prefabricated Cabin

Junray Electrical, as a professional Manufacturer, Supplier and Factory of Box-type Substations in China, focuses on the research and development of large-scale photovoltaic power station integrated prefabricated equipment. The SVG High Voltage Prefabricated Cabin integrates inverters, transformers and other complete photovoltaic equipment. The factory pre-assembles and tests them, and they are ready for connection at the site. They can be deployed in just a few days, eliminating the need to build a power distribution room and saving costs. It is highly reliable with low failure rates, and perfectly suits large-scale photovoltaic power stations and energy storage projects.

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PV Grid-Tied Junction Box

Junray Electrical, as a professional Manufacturer, Supplier and Factory of Low-Voltage Distribution Boxes in China, focuses on researching and producing grid-connected equipment specifically for photovoltaic power stations. The PV Grid-Tied Junction Box integrates functions such as islanding prevention, lightning protection, and multiple protections. It can automatically detect the grid status and achieve intelligent grid connection, and is suitable for various photovoltaic scenarios including household use, industrial and commercial use, etc.

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Junray Electrical is a professional Photovoltaic Equipment manufacturer and supplier in China. We warmly welcome you to wholesale high quality products at competitive price from our factory.

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