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

PROJOY2026-04-05

Essential Components of Energy Storage Systems: A Comprehensive Overview

Energy Storage Systems (ESS) play a pivotal role in modern energy management, particularly in the integration of renewable energy sources, peak load management, and grid stabilization. Understanding the components of these systems is crucial for professionals in the electrical sector, especially those involved in batteries, chargers, and energy management technologies. The core components of an e

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PROJOY2026-04-04

AC Connectors vs DC Connectors: Understanding Their Key Differences and Applications

AC Connectors vs DC Connectors: Understanding Their Key Differences and Applications Table of Contents Introduction What Are AC Connectors? What Are DC Connectors? Key Differences Between AC and DC Connectors Applications of AC Connectors Applications of DC Connectors Choosing the Right Connector: AC vs. DC Safety Considerations in Using Connectors The Future o

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PROJOY2026-04-03

Understanding DC Circuit Breakers: Essential Components for Modern Electronics

DC circuit breakers are indispensable components in modern electrical systems, particularly in applications involving direct current (DC). Unlike their alternating current (AC) counterparts, DC circuit breakers are specifically designed to interrupt and manage the flow of direct current, making them essential for a variety of settings, from renewable energy sources to industrial applications. ###

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