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
2026-04-21
Understanding DC Isolation Switches: Essential Components for Safety and Efficiency
A DC isolation switch is a crucial component in electrical systems, especially in applications involving direct current (DC) power. These switches are designed to safely isolate electrical circuits, enabling maintenance and repair without the risk of electric shock or equipment damage. The fundamental purpose of a DC isolation switch is to provide a means of disconnecting the circuit from the powe
2026-04-20
Energy Storage System Components: Innovations Driving the Industry Forward
Energy Storage System Components: Innovations Driving the Industry Forward Table of Contents Introduction to Energy Storage Systems The Importance of Energy Storage in Modern Infrastructure Key Components of Energy Storage Systems Batteries: The Heart of Energy Storage Inverters: Converting Energy Efficiently Energy Management Controllers: Smart Solutions Chargi
2026-04-19
Understanding AC Connectors: Essential Components for Reliable Electrical Systems
--- AC connectors are vital components in the electrical and electronic industry, playing a critical role in the transmission of alternating current (AC) power. These connectors are used in various applications, from household appliances to industrial machinery, making them indispensable for efficient electrical systems. Understanding AC connectors' structure, functionality, and applications can g