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

PROJOY2026-03-14

Understanding DC Circuit Breakers: Essential Insights for Professionals

DC circuit breakers are critical components in the field of electronic devices, particularly when it comes to managing and protecting electrical circuits. Unlike their AC counterparts, which are designed to handle alternating current, DC circuit breakers are specifically engineered for direct current applications, which presents unique challenges and requirements. Understanding the importance of D

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PROJOY2026-03-13

Navigating the Future of Building Safety with Rapid Shutdown: A Comprehensive Guide

Navigating the Future of Building Safety with Rapid Shutdown Table of Contents Understanding Rapid Shutdown The Importance of Building Safety The Regulatory Framework Surrounding Building Safety Innovative Technology in Rapid Shutdown Implementation Strategies for Rapid Shutdown Challenges and Solutions in Rapid Shutdown Implementation Case Studies: Successful Implemen

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PROJOY2026-03-12

Understanding the Importance of DC Isolation Switches in Electrical Systems

When it comes to electrical systems, particularly those involving direct current (DC), the DC isolation switch plays a vital role in maintaining safety and operational efficiency. These switches are designed to disconnect a section of the electrical circuit from the power source, allowing for maintenance or emergency situations without the risk of electrical shock or system damage. Understanding t

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