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
2025-11-07
Essential Components of Energy Storage Systems: A Comprehensive Overview
Energy Storage Systems (ESS) play a pivotal role in modern energy management, allowing for the efficient storage and use of energy derived from various sources. These systems are particularly essential in the context of renewable energy integration, grid stability, and demand response. To effectively harness the full potential of an ESS, it is vital to understand its key components. 1. **Batteries
2025-11-06
The Evolution of AC Connectors: A Comprehensive Historical Perspective
The Evolution of AC Connectors: A Historical Perspective Table of Contents Introduction to AC Connectors The Birth of Electricity and Early Connectors 20th Century Innovations in AC Connectors Standardization and Safety in AC Connectors Modern AC Connectors: Features and Functionality The Future of AC Connectors: Trends and Technologies Practical Applications of AC Con
2025-11-05
Understanding DC Circuit Breakers: Essential Components for Electronic Safety
DC circuit breakers play a vital role in protecting electrical circuits in a variety of applications, especially where direct current (DC) is utilized. Unlike their AC counterparts, DC circuit breakers are designed specifically to handle the unique challenges presented by direct current. Understanding their functionalities and applications is crucial for professionals in the electronics industry.