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
2026-03-29
The Benefits of Using DC Circuit Breakers in Industrial Settings
The Benefits of Using DC Circuit Breakers in Industrial Settings Table of Contents 1. Introduction to DC Circuit Breakers 2. Understanding DC Circuit Breakers 3. Advantages of Using DC Circuit Breakers in Industrial Settings 3.1 Enhanced Safety Features 3.2 Improved Reliability 3.3 Increased Efficiency 3.4 Space-Saving Solutions 4. Applications of DC Circ
2026-03-28
Understanding Rapid Shutdown in Electrical Systems: A Critical Safety Feature
In the realm of building and construction materials, particularly concerning switches and other components, understanding Rapid Shutdown is vital for ensuring safety and compliance. Rapid Shutdown refers to the swift disconnection of electrical systems, primarily in solar energy applications, but its principles can be applied more broadly to various electrical systems in construction environments.
2026-03-27
Enhancing Electrical Safety with Advanced DC Isolation Switch Technology: A Comprehensive Guide
Enhancing Electrical Safety with Advanced DC Isolation Switch Technology Table of Contents 1. Understanding DC Isolation Switches 2. The Importance of Electrical Safety in Modern Applications 3. Key Features of Advanced DC Isolation Switches 3.1 Enhanced Reliability 3.2 Improved Efficiency 3.3 Compact Design 4. Applications of DC Isolation Switch Technology 4.1 Renewable Energy Systems 4.2 Industr