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

PROJOY2026-06-01

Rapid Shutdown: Enhancing Safety in High-Rise Construction

Rapid Shutdown: Enhancing Safety in High-Rise Construction Table of Contents 1. Introduction to Rapid Shutdown in High-Rise Construction 2. The Importance of Safety in High-Rise Projects 3. What is Rapid Shutdown? 4. Mechanics of Rapid Shutdown Systems 5. Benefits of Implementing Rapid Shutdown Systems 6. Technological Innovations in Rapid Shutdown 7. Case Studies: Suc

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PROJOY2026-05-31

Understanding DC Isolation Switches: Essential Components for Safety in Electrical Systems

DC Isolation Switches are vital components in the realm of electrical engineering, particularly in applications that involve direct current (DC) systems. These switches are designed to disconnect the electrical circuit, ensuring safety during maintenance and preventing electrical hazards. Understanding the functionality and application of DC Isolation Switches is crucial for professionals involved

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PROJOY2026-05-30

Understanding Energy Storage System Components for Enhanced Efficiency and Performance

Understanding Energy Storage System Components for Enhanced Efficiency and Performance In the ever-evolving landscape of energy management, **energy storage systems (ESS)** play a pivotal role in enhancing efficiency and performance. By understanding the various components that make up these systems, stakeholders can make informed decisions that lead to optimized energy use. This comprehensive gui

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