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

PROJOY2026-02-17

Understanding DC Isolation Switches: Essential Components for Electrical Safety

DC Isolation Switches are essential components in the field of electrical installations, particularly in systems that utilize direct current (DC) power. These switches are designed to disconnect the electrical circuit from the power source, ensuring safety during maintenance or emergencies. Understanding their importance is crucial for professionals working in construction and decorative materials

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PROJOY2026-02-16

The Critical Role of Maintenance in Ensuring Optimal Performance of Energy Storage System Components

The Critical Role of Maintenance in Ensuring Optimal Performance of Energy Storage System Components Table of Contents Introduction to Energy Storage Systems The Importance of Maintenance for Energy Storage Systems Key Components Requiring Regular Maintenance Batteries: The Heart of Energy Storage Chargers: Ensuring Efficiency in Charging Cycles Inverters: Converting

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PROJOY2026-02-15

Understanding AC Connectors: Essential Components for Electrical Applications

AC connectors play a crucial role in the electrical and electronic industries, serving as the interface for connecting alternating current (AC) power sources to various devices and systems. Understanding AC connectors is vital for anyone involved in electrical engineering, installation, or maintenance, as their proper use ensures safety, efficiency, and reliability in electrical applications. Ther

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