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
2026-04-17
Understanding Rapid Shutdown: Ensuring Safety in Electrical Systems
--- Rapid Shutdown is an essential safety mechanism widely discussed in the context of electrical systems, especially in solar energy installations. This system is designed to quickly deactivate the electrical output of solar panels in emergency situations, such as fires or maintenance work. The primary goal of Rapid Shutdown is to protect first responders and maintenance personnel from high-volta
2026-04-16
A Comprehensive Look at DC Isolation Switch Regulations and Standards
A Comprehensive Look at DC Isolation Switch Regulations and Standards Table of Contents 1. Introduction to DC Isolation Switches 2. Importance of DC Isolation Switches in Electrical Systems 3. Key Regulations Governing DC Isolation Switches 4. Industry Standards for DC Isolation Switches 5. Types of DC Isolation Switches 6. Installation Best Practices for DC Isolation Swit
2026-04-15
Understanding the Essential Components of Energy Storage Systems
Energy storage systems (ESS) play a pivotal role in today’s energy landscape, acting as a bridge between energy generation and consumption. Understanding the key components of these systems is essential for harnessing their full potential, especially in the electrical and electronics industry, which includes batteries, accumulators, and chargers. The primary component of any energy storage system