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
2026-02-17
Understanding DC Isolation Switches: Essential Components for Electrical Safety
DC Isolation Switches are essential components in the field of electrical installations, particularly in systems that utilize direct current (DC) power. These switches are designed to disconnect the electrical circuit from the power source, ensuring safety during maintenance or emergencies. Understanding their importance is crucial for professionals working in construction and decorative materials
2026-02-16
The Critical Role of Maintenance in Ensuring Optimal Performance of Energy Storage System Components
The Critical Role of Maintenance in Ensuring Optimal Performance of Energy Storage System Components Table of Contents Introduction to Energy Storage Systems The Importance of Maintenance for Energy Storage Systems Key Components Requiring Regular Maintenance Batteries: The Heart of Energy Storage Chargers: Ensuring Efficiency in Charging Cycles Inverters: Converting
2026-02-15
Understanding AC Connectors: Essential Components for Electrical Applications
AC connectors play a crucial role in the electrical and electronic industries, serving as the interface for connecting alternating current (AC) power sources to various devices and systems. Understanding AC connectors is vital for anyone involved in electrical engineering, installation, or maintenance, as their proper use ensures safety, efficiency, and reliability in electrical applications. Ther