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
2026-04-05
Essential Components of Energy Storage Systems: A Comprehensive Overview
Energy Storage Systems (ESS) play a pivotal role in modern energy management, particularly in the integration of renewable energy sources, peak load management, and grid stabilization. Understanding the components of these systems is crucial for professionals in the electrical sector, especially those involved in batteries, chargers, and energy management technologies. The core components of an e
2026-04-04
AC Connectors vs DC Connectors: Understanding Their Key Differences and Applications
AC Connectors vs DC Connectors: Understanding Their Key Differences and Applications Table of Contents Introduction What Are AC Connectors? What Are DC Connectors? Key Differences Between AC and DC Connectors Applications of AC Connectors Applications of DC Connectors Choosing the Right Connector: AC vs. DC Safety Considerations in Using Connectors The Future o
2026-04-03
Understanding DC Circuit Breakers: Essential Components for Modern Electronics
DC circuit breakers are indispensable components in modern electrical systems, particularly in applications involving direct current (DC). Unlike their alternating current (AC) counterparts, DC circuit breakers are specifically designed to interrupt and manage the flow of direct current, making them essential for a variety of settings, from renewable energy sources to industrial applications. ###