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
2026-05-26
Understanding the Applications of DC Isolation Switches in Industry: A Comprehensive Guide
Understanding the Applications of DC Isolation Switches in Industry Table of Contents 1. Introduction to DC Isolation Switches 2. Importance of DC Isolation Switches in Industrial Applications 3. Functionality of DC Isolation Switches 4. Key Application Areas for DC Isolation Switches 4.1 Renewable Energy Systems 4.2 Telecommunications Infrastructure 4.3 Industrial
2026-05-25
Understanding the Key Components of Energy Storage Systems
Energy storage systems (ESS) are integral to the stability and efficiency of electrical networks, particularly as the use of renewable energy sources becomes more prevalent. Understanding the key components of these systems will help you appreciate their functionality and importance in energy management. 1. **Batteries**: At the heart of any energy storage system are batteries, which store energy
2026-05-24
AC Connector Innovations: A Comprehensive Overview of the Latest Developments in the Market
AC Connector Innovations: What’s New in the Market? Table of Contents 1. Introduction to AC Connectors and Their Importance 2. Recent Innovations in AC Connector Technology 3. Design Trends in Modern AC Connectors 4. Key Features to Look for in New AC Connectors 5. Major Manufacturers Leading the AC Connector Market 6. Applications of New AC Connectors in Various Industries 7. The Future of AC Con