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
2026-03-24
Understanding DC Circuit Breakers: Essential Insights for Electronics Professionals
DC circuit breakers are indispensable components in the field of electronics, particularly when it comes to safeguarding circuits from overcurrent conditions. Unlike AC circuit breakers, which are designed for alternating current applications, DC circuit breakers are specifically engineered to manage direct current flows. This distinction is crucial, as the behavior of direct current presents uniq
2026-03-23
The Role of Rapid Shutdown in Minimizing Fire Risks: A Comprehensive Guide
The Role of Rapid Shutdown in Minimizing Fire Risks Introduction: Understanding Fire Risks in Buildings In the construction and decoration industry, ensuring the safety of buildings is paramount. One of the most significant threats to life and property is fire. As we explore the role of **rapid shutdown systems** in minimizing these risks, we recognize that effective fire safety measures can be th
2026-03-22
Understanding DC Isolation Switches: Essential Components for Safe Electrical Systems
DC isolation switches play a pivotal role in the electrical infrastructure of buildings. These devices are designed to disconnect the direct current (DC) power source from the electrical circuits, ensuring that maintenance and repair work can be performed safely without the risk of electric shock. Their importance has surged with the increasing reliance on renewable energy sources, such as solar p