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
2026-03-22
Understanding DC Isolation Switches: Essential Components for Safe Electrical Systems
DC isolation switches play a pivotal role in the electrical infrastructure of buildings. These devices are designed to disconnect the direct current (DC) power source from the electrical circuits, ensuring that maintenance and repair work can be performed safely without the risk of electric shock. Their importance has surged with the increasing reliance on renewable energy sources, such as solar p
2026-03-21
How to Assess the Quality of Energy Storage System Components: A Comprehensive Guide
How to Assess the Quality of Energy Storage System Components Table of Contents Introduction to Energy Storage Systems The Importance of Quality in Energy Storage Systems Key Components of Energy Storage Systems Understanding Batteries Evaluating Chargers The Role of Inverters Criteria for Assessing Quality
2026-03-20
Understanding AC Connectors: Key Insights for Electrical Professionals
When working in the electrical industry, understanding the various components that facilitate power distribution is crucial, and one of the fundamental elements is the AC connector. AC connectors are designed to connect electrical devices to alternating current (AC) power sources, playing a vital role in applications ranging from residential wiring to industrial machinery. In this article, we will