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
2026-02-23
Understanding Rapid Shutdown: A Crucial Safety Measure in Building and Construction
In recent years, the concept of rapid shutdown has gained significant traction in the construction and building materials sector, particularly with the increasing integration of solar energy systems. Rapid shutdown refers to the immediate disconnection of electrical power from solar panels to ensure safety during emergencies, maintenance, or any unforeseen incidents. This mechanism is crucial beca
2026-02-22
Essential Features to Look for in a DC Isolation Switch: A Comprehensive Guide
Essential Features to Look for in a DC Isolation Switch When it comes to electrical installations, the DC isolation switch plays a pivotal role in ensuring safety and efficiency. This guide will cover the **essential features** to consider when selecting a DC isolation switch, helping you make an informed decision for your applications. Understanding DC Isolation Switches DC isolation switches are
2026-02-21
Essential Components of Energy Storage Systems: A Comprehensive Overview
Energy Storage Systems (ESS) are becoming increasingly vital in today's energy landscape, enabling the efficient management of energy supply and demand. Understanding the components of these systems is crucial for professionals in the electrical industry, especially those involved with batteries, storage solutions, and charging technologies. At the heart of an energy storage system is the energy