Join Electric (Shanghai) Co., Ltd.
Company Profile & Product Portfolio
1. Company Overview
Join Electric (Shanghai) Co., Ltd. is a high-tech enterprise specializing in the research, development, manufacturing, and sales of high-voltage DC contactors and switching components. The company was established in 2018 and is located in Hewang Zhigu Industrial Park, Qingpu District, Shanghai, China, one of the important industrial and technological innovation hubs in the Yangtze River Delta region.
Since its establishment, Join Electric has focused on the development of advanced DC switching technology, providing reliable and efficient solutions for high-power electrical systems. The company integrates independent R&D capability, precision manufacturing, quality control, and global sales services to supply customers worldwide with safe and high-performance products.
Join Electric has been recognized as a Shanghai High-Tech Enterprise and owns multiple patents related to DC contactor technology, including innovations in arc suppression, magnetic blowout structures, sealing technology, and high-current switching reliability.
With rapid growth in the new energy industry, the company has become an important supplier of high-voltage DC switching devices used in modern electrification systems.
2. Mission and Vision
Mission
To develop reliable high-voltage DC switching solutions that support the rapid development of electric mobility, renewable energy systems, and intelligent power infrastructure.
Vision
To become a globally recognized supplier of high-voltage DC contactors and electrical switching solutions for new energy applications.
Core Values
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Innovation-driven development
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Quality-oriented manufacturing
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Customer-focused service
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Long-term technological advancement
3. Core Technology & R&D Capability
Join Electric places strong emphasis on technology innovation and product reliability. The company has established a professional R&D team specializing in high-power electrical switching technologies.
Key technology advantages include:
• High voltage DC switching design
• Magnetic arc blowout technology
• Sealed gas contactor technology
• High current contact reliability
• Automotive grade durability design
Through continuous innovation, Join Electric has obtained several patents for DC contactor structures and switching mechanisms, ensuring improved arc suppression performance and longer service life.
4. Product Portfolio
Join Electric focuses primarily on high-voltage DC contactors, which are widely used in modern electrified power systems.
The company's products are divided into several major categories:
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High Voltage DC Contactors
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EV Charging Contactors
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Energy Storage Contactors
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Industrial DC Contactors
These products are designed for high current, high voltage switching applications in demanding environments.
4.1 High Voltage DC Contactors
High voltage DC contactors are the core product of Join Electric. These devices are designed to control and switch high-voltage DC circuits safely and efficiently.
Key Features
• High switching reliability
• Compact design
• High current capacity
• Long mechanical and electrical life
• Excellent arc suppression performance
• Sealed structure suitable for harsh environments
Typical Technical Parameters
Voltage range:
12V – 1000V DC
Current range:
50A – 500A
Contact type:
SPST / SPDT
Typical Models
JEV Series High Voltage DC Contactors
JEV100
Rated Voltage: 12-900V DC
Rated Current: 100A
JEV200
Rated Voltage: 12-900V DC
Rated Current: 200A
JEV250
Rated Voltage: 12-1000V DC
Rated Current: 250A
JEV400
Rated Voltage: 12-1000V DC
Rated Current: 400A
JEV500
Rated Voltage: 12-1000V DC
Rated Current: 500A
These models are designed for heavy duty DC switching applications.
4.2 EV Charging Contactors
Electric vehicle charging stations require high-reliability DC switching devices capable of handling large currents and high voltage.
Join Electric provides specialized DC contactors designed for EV charging systems.
Typical Models
JEV Series Charging Contactors
JEV150
Rated Current: 150A
Rated Voltage: up to 1000V DC
JEV300
Rated Current: 300A
Rated Voltage: up to 1000V DC
JEV450
Rated Current: 450A
Rated Voltage: up to 1000V DC
Applications
• DC fast charging stations
• Super charging systems
• EV battery management systems
• Charging infrastructure
4.3 Energy Storage Contactors
Energy storage systems require reliable switching devices capable of handling high energy loads.
Join Electric contactors are widely used in battery energy storage systems (BESS).
Typical Models
JES Series Energy Storage Contactors
JES100
Rated Current: 100A
JES200
Rated Current: 200A
JES300
Rated Current: 300A
JES400
Rated Current: 400A
Applications
• Solar energy storage systems
• Wind power energy storage
• Industrial battery systems
• Grid energy storage
4.4 Industrial DC Contactors
These contactors are used in various industrial equipment requiring high-power DC switching.
Typical Models
JDC Series Industrial Contactors
JDC100
Rated Current: 100A
JDC200
Rated Current: 200A
JDC300
Rated Current: 300A
JDC400
Rated Current: 400A
Applications include:
• Electric forklifts
• Industrial automation equipment
• Electric tools
• DC motor control systems
5. Industry Applications
Join Electric DC contactors are widely used in rapidly growing new energy industries.
Electric Vehicles
Used in battery management systems, motor controllers, and power distribution units.
EV Charging Infrastructure
Used in DC fast charging stations and supercharging systems.
Energy Storage Systems
Used in solar energy storage, grid energy storage, and battery management systems.
Electric Tools
Used in high-power battery powered equipment.
Industrial Power Systems
Used in DC motor control and automation equipment.
6. Quality Assurance & Certifications
Join Electric follows strict quality management standards to ensure product reliability and safety.
The company has obtained multiple international certifications including:
IATF16949
Automotive Quality Management System
CB Certification
China Compulsory Certification (CCC)
UL Certification
CE Certification
RoHS Environmental Compliance
These certifications ensure that Join Electric products meet global safety, quality, and environmental standards.
7. Manufacturing & Production Capability
The company operates modern production facilities equipped with advanced manufacturing and testing equipment.
Production capabilities include:
• Automated assembly lines
• Precision contact welding technology
• Arc suppression testing systems
• High current endurance testing
• Environmental reliability testing
All products undergo strict quality inspections before delivery.
8. Global Market & Customer Service
Join Electric products are exported to multiple international markets including:
Europe
North America
Southeast Asia
Middle East
The company provides comprehensive customer support services including:
• Technical consultation
• Product customization
• OEM / ODM services
• After-sales technical support
Through continuous innovation and quality improvement, Join Electric aims to build long-term partnerships with customers worldwide.
9. Future Development
With the rapid growth of the new energy industry, Join Electric will continue to focus on the development of advanced high-voltage DC switching technology.
The company plans to expand its product portfolio to include:
• next-generation high voltage contactors
• intelligent DC switching modules
• integrated power control systems
Join Electric is committed to supporting the global transition toward electrification, renewable energy, and intelligent power systems.
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