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

PROJOY2026-04-17

Understanding Rapid Shutdown: Ensuring Safety in Electrical Systems

--- Rapid Shutdown is an essential safety mechanism widely discussed in the context of electrical systems, especially in solar energy installations. This system is designed to quickly deactivate the electrical output of solar panels in emergency situations, such as fires or maintenance work. The primary goal of Rapid Shutdown is to protect first responders and maintenance personnel from high-volta

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PROJOY2026-04-16

A Comprehensive Look at DC Isolation Switch Regulations and Standards

A Comprehensive Look at DC Isolation Switch Regulations and Standards Table of Contents 1. Introduction to DC Isolation Switches 2. Importance of DC Isolation Switches in Electrical Systems 3. Key Regulations Governing DC Isolation Switches 4. Industry Standards for DC Isolation Switches 5. Types of DC Isolation Switches 6. Installation Best Practices for DC Isolation Swit

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PROJOY2026-04-15

Understanding the Essential Components of Energy Storage Systems

Energy storage systems (ESS) play a pivotal role in today’s energy landscape, acting as a bridge between energy generation and consumption. Understanding the key components of these systems is essential for harnessing their full potential, especially in the electrical and electronics industry, which includes batteries, accumulators, and chargers. The primary component of any energy storage system

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