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
2025-10-23
The Comprehensive Guide to AC Connectors: Essential Insights for Professionals
AC connectors play a vital role in the electrical and electronic industries, serving as essential components for transmitting alternating current (AC) power. These connectors are designed to facilitate the safe and efficient connection of electrical devices to power sources. Understanding AC connectors is crucial for professionals involved in electrical installations, maintenance, and design. One
2025-10-22
Why DC Circuit Breakers Are Essential for Renewable Energy Systems
Why DC Circuit Breakers Are Essential for Renewable Energy Systems Table of Contents Introduction to DC Circuit Breakers What Are DC Circuit Breakers? The Importance of DC Circuit Breakers in Renewable Energy Systems How DC Circuit Breakers Work Types of DC Circuit Breakers Used in Renewable Energy Advantages of Using DC Circuit Breakers Installation and Maintenance of DC Circuit Br
2025-10-21
Understanding Rapid Shutdown: Enhancing Safety in Building and Construction
Rapid Shutdown is an integral safety mechanism designed to quickly de-energize electrical systems, especially in photovoltaic (PV) solar arrays and other electrical installations. The primary purpose of Rapid Shutdown is to enhance safety during emergency situations, maintenance, or when individuals are exposed to electrical hazards. In the construction and decorative materials sector, where elect