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
2026-03-26
Understanding the Key Components of Energy Storage Systems
Energy storage systems (ESS) play a crucial role in modern power management, enabling the efficient use of renewable energy sources and enhancing grid stability. Understanding the components of these systems is vital for professionals in the electrical and battery industry, particularly when dealing with batteries, accumulators, and chargers. At the core of any energy storage system are the storag
2026-03-26
High-Efficiency Micro Inverter for Optimized Solar Energy Systems
Micro inverter efficiently converts DC to AC power at the module level, enhancing solar system performance, safety, and monitoring capabilities.
2026-03-25
Common Misconceptions About AC Connectors Explained: Debunking Myths for Better Understanding
Common Misconceptions About AC Connectors Explained Table of Contents 1. Introduction to AC Connectors 2. What Are AC Connectors? 3. Common Misconceptions About AC Connectors 3.1 Misconception #1: All AC Connectors Are the Same 3.2 Misconception #2: AC Connectors Don’t Affect Performance 3.3 Misconception #3: It’s Safe to Use Any Connector 3.4 Misconception #4: