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.

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PROJECTS

PPOJOY Circuit Breaker

PPOJOY Circuit Breaker

Location: Brazil

PPOJOY Circuit Breaker

PPOJOY Circuit Breaker

Location: USA

PPOJOY Isolating Switch

PPOJOY Isolating Switch

Location: Saudi Arabia

PPOJOY Array-Level Rapid Shutdown

PPOJOY Array-Level Rapid Shutdown

Location: Germany

PPOJOY Array-Level Rapid Shutdown

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.

PROJOY
13 +

Years experience in PV & energy storage industry

100 +

R&D talents globally

16 +

Production Lines

60 +

Exported to more than 60 countries

85 %

Of China's mainstream energy storage inverter / PAck manufacturer are using Projoy's DC MCB.

80 %

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.

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NEWS & EVENTS

PROJOY2025-10-23

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

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PROJOY2025-10-22

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

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PROJOY2025-10-21

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

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