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Industry Detail

30 years of dedication to the electrical accessories industry.

Key Details

Category
Rail Traffic
Location
Taiyuan
Product
DJZ Series Main Circuit Moving Connectors

Providing DJZ Series Main Circuit Moving Connectors Solutions For Rail Transit

Deyuan Electric’s independently developed DJZ Series Main Circuit Moving Connectors have been successfully applied in the Taiyuan Urban Rail Transit Project, providing safe, reliable, and compact power distribution solutions for metro stations and tunnel low-voltage systems.

The Taiyuan Urban Rail Transit Project is the first metro line in Shanxi Province, demanding extremely high standards of reliability, safety, and maintainability for its power supply system. Metro operating environments are complex – stations and tunnels have compact, equipment-dense spaces. Low-voltage distribution equipment must feature high protection ratings,small footprints, and easy maintainability.

As the core equipment for metro power and lighting distribution, the reliability of drawer units and their internal primary connectors directly affects the stable operation of critical systems including ventilation, lighting, signaling, and platform screen doors.

 

Advantages of DJZ Series Main Circuit Moving Connectors:

Double-chuck structure – reliable connection, uniform contact pressure

Convex point spacing – increases heat dissipation surface, effectively reduces temperature rise

Ventilation slots – both plug and socket have ventilation openings, suitable for long continuous metro operation

Unified mounting dimensions – same cutout size for 80A–400A, simplifies spare parts management and field replacement

Providing DJZ Series Main Circuit Moving Connectors Solutions For Rail Transit

Our Contribution to the LV Switchgear Industry

Solving Critical Challenges

Primary moving and fixed connectors (also known as main circuit connectors or primary disconnects) are the key components that connect the main power circuit between the drawout unit and the fixed part of a low‑voltage drawout switchgear.

Innovative Plug-in primary Connectors for Higher Safety and Reliability

Low‑voltage drawout switchgear faces two persistent challenges: excessive temperature rise and unstable contact resistance in primary connectors. Overheating can lead to insulation failure, arc faults, and even unplanned outages – a major risk for power distribution systems.

Our patented composite laminated plug‑in type primary connectors (CN201038641Y) and advanced plug‑in connector (CN201898227U) directly address these  issues:

Our Contribution to the LV Switchgear Industry – Solving Critical Challenges

Key Solutions

Enhanced heat dissipation – Convex points between laminated contacts create ventilation gaps, increasing surface area and airflow. The housing is designed with cooling slots to keep temperature rise under control.

Non‑magnetic stainless steel springs – Eliminate self‑induced thermal magnetic fields, reducing heat generation and improving long‑term reliability.

Precise contact alignment – Fixed clamping and locating structures ensure consistent insertion force and low contact resistance, preventing poor connections.

Modular, tool‑free assembly – Simplified fixing mechanism inside the connector housing maximizes internal space for cooling while allowing easy installation and maintenance.

Our Contribution to the LV Switchgear Industry – Solving Critical Challenges

Industry Contribution

These innovations have become industry benchmarks. Our connectors are widely adopted in  drawout switchgear systems, significantly improving operational safety and reducing downtime. By solving the “overheating” bottleneck, we help panel builders and end‑users achieve:

Lower failure rates in high‑density drawer compartments

Extended component life under continuous full‑load operation

Compliance with stringent IEC 61439 temperature‑rise tests

Our Contribution to the LV Switchgear Industry – Solving Critical Challenges

Commitment

As a specialist in LV switchgear structures and components, we continue to drive technological progress – delivering solutions that make power distribution safer, more reliable, and more efficient.

From connectors to complete enclosures – one source, one standard of excellence.

Why Choose Our Conclusion Option?

One-Stop Structural Solutions in Low Voltage System

Consistent Quality Across Every Component

Deep Compatibility with Major Systems

Reliable Delivery, Reduced Project Risk

Contact Us To Obtain Your Personalized Solution