MAIN PRODUCTS
We provide DC Isolation Switch, Miniature Circuit Breaker, DC Surge Protector, Rapid Shutdown, Micro Inverter, Smart Electricity Meter and other components for Solar and Energy Storage System use.
INDUSTRY SOLUTIONS
We offer all needed DC and AC power distribution components for PV and energy storage systems use, which can be applied to various scenarios, such as residential rooftops, commercial buildings and industrial rooftops.
Residential Solar and Energy Storage System
Residential photovoltaic + energy storage power stations can be divided into various working modes such as backup power supply, self-use, peak shaving and valley filling, etc. By combining hybrid inverter and EPS switching box, the system can miximize the usage of mains power, photovoltaic power, and EPS energy storage power, greatly improving the utilization rate of electric energy.
View MorePROJECTS
PPOJOY Circuit Breaker
Location: Brazil
PPOJOY Circuit Breaker
Location: USA
PPOJOY Isolating Switch
Location: Saudi Arabia
PPOJOY Array-Level Rapid Shutdown
Location: Germany
PPOJOY Array-Level Rapid Shutdown
Location: Ireland
ABOUT PROJOY
Projoy Electric Co., Ltd (PROJOY ELECTRIC) was founded in 2011 and headquartered in Suzhou, China. It is a pioneer manufacturer in China that focusing on providing protection, safety and metering products, such as DC Isolation Switch, Miniature Circuit Breaker, DC Surge Protector, Rapid Shutdown, Micro Inverter, Smart Electricity Meter and other accessory products for PV and Energy Storage System use.
Our Vision
Focusing on the concept of “Switch to Safety”, we will never stop innovating for a safer and smarter new energy world.
Our Mission
To continue our dedication to providing a wide range of well-designed safety products, exceptional customer service, and great experiences.
Years experience in PV & energy storage industry
R&D talents globally
Production Lines
Exported to more than 60 countries
Of China's mainstream energy storage inverter / PAck manufacturer are using Projoy's DC MCB.
Of China's mainstream inverter manufacturers are using Projoy's PV isolators.
GLOBAL PARTNERS
Empower innovation in industries and continuously contribute towards a better future.
NEWS & EVENTS
2026-05-13
Understanding AC Connectors: Essential Insights for Electrical Applications
--- AC connectors play a fundamental role in the electrical and electronics industry, especially in applications requiring alternating current (AC) supply. These connectors facilitate the connection between various electrical devices and power sources, ensuring safe and efficient energy transfer. Understanding the different types of AC connectors, their applications, and best practices for install
2026-05-13
Understanding the Importance of DC Isolation Switches in Building and Construction
DC Isolation Switches are vital components in electrical systems, particularly those that involve direct current (DC) applications. Their primary function is to disconnect the power supply, providing a safe means for maintenance and servicing of electrical equipment. This is particularly important in environments where high voltages and currents are present, as improper handling can lead to hazard
2026-05-13
Understanding DC Circuit Breakers: Essential Components for Your Electrical Systems
DC circuit breakers are critical safety devices designed to protect electrical circuits from overloads and short circuits in direct current (DC) systems. Unlike their AC counterparts, DC circuit breakers must manage a continuous flow of current in one direction, which presents unique challenges and requirements for effective operation. Understanding these components is essential for professionals