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

PROJOY2026-02-14

The Impact of DC Circuit Breakers on Energy Conservation: A Comprehensive Analysis

The Impact of DC Circuit Breakers on Energy Conservation Introduction to DC Circuit Breakers and Energy Conservation In the quest for sustainability, the role of **DC circuit breakers** stands out as a critical element in energy conservation. These devices not only protect electrical circuits from overloads and faults but also play a significant role in optimizing energy efficiency. As industries

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PROJOY2026-02-13

Understanding Rapid Shutdown: A Safety Measure in Modern Electrical Systems

Rapid Shutdown refers to a safety mechanism designed to quickly deactivate electrical systems, particularly in photovoltaic (solar energy) installations, but its principles can be applied to various electrical systems, including those in the construction and decorative material industries. This feature is crucial in emergencies, such as fires, where timely intervention can prevent accidents and fa

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PROJOY2026-02-12

Common Misconceptions About DC Isolation Switches Debunked: A Comprehensive Guide

Understanding DC Isolation Switches: Breaking Down the Basics In the realm of electrical systems, **DC isolation switches** play a pivotal role in ensuring safety and efficiency. Yet, many professionals and enthusiasts harbor misconceptions about these devices, leading to confusion and potentially hazardous situations. This article aims to **debunk common myths** surrounding DC isolation switches,

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