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
14 +

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

PROJOY2026-05-26

Understanding the Applications of DC Isolation Switches in Industry: A Comprehensive Guide

Understanding the Applications of DC Isolation Switches in Industry Table of Contents 1. Introduction to DC Isolation Switches 2. Importance of DC Isolation Switches in Industrial Applications 3. Functionality of DC Isolation Switches 4. Key Application Areas for DC Isolation Switches 4.1 Renewable Energy Systems 4.2 Telecommunications Infrastructure 4.3 Industrial

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PROJOY2026-05-25

Understanding the Key Components of Energy Storage Systems

Energy storage systems (ESS) are integral to the stability and efficiency of electrical networks, particularly as the use of renewable energy sources becomes more prevalent. Understanding the key components of these systems will help you appreciate their functionality and importance in energy management. 1. **Batteries**: At the heart of any energy storage system are batteries, which store energy

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PROJOY2026-05-24

AC Connector Innovations: A Comprehensive Overview of the Latest Developments in the Market

AC Connector Innovations: What’s New in the Market? Table of Contents 1. Introduction to AC Connectors and Their Importance 2. Recent Innovations in AC Connector Technology 3. Design Trends in Modern AC Connectors 4. Key Features to Look for in New AC Connectors 5. Major Manufacturers Leading the AC Connector Market 6. Applications of New AC Connectors in Various Industries 7. The Future of AC Con

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