Rail Transportation
Highly reliable DC contactors and switch control systems designed specifically for locomotive traction and ground power supply.
Industry Technical Advantages
Exceptional Short-Term Withstanding Capacity
Withstands surge currents of tens of kilamps (kA), preventing contact welding.
Strong Magnetic Arc Blowing and Extinguishing Technology
A dedicated magnetic blowing coil, combined with a multi-plate deionization arc-extinguishing grid, rapidly interrupts DC arcs within milliseconds.
Vibration and Shock Resistance
Complies with the IEC 61373 standard for railway vehicle vibration and shock, ensuring stable engagement even under severe jolting conditions.
High Insulation Creepage Distance
Utilizes insulation materials designed to withstand high arcing, preventing ground flashovers within the compact enclosure.
Manufacturing and Rigorous Testing
Full-Voltage, High-Current Test Bench
Capable of performing real DC arc-breaking tests and dynamic thermal stability tests at voltages up to 1,800 V DC.
Vibration, Shock, and Environmental Simulation
Equipped with a multi-axis vibration test bench and a high-low temperature cycling chamber to verify product lifespan under severe operating conditions.
Precision Silver Contact Welding Process
Automated high-frequency brazing and cold riveting processes strictly control contact resistance and minimize temperature rise during operation.
Selection Guide
System Rated Voltage
Distinguish between 750 V DC (light rail/trams/third rail) and 1500 V/1800 V DC (subway and mainline locomotive overhead contact systems).
Short-Time Withstand Current Verification
Verify based on the expected peak short-circuit current and duration in the grounding and protection circuits.
Auxiliary Contact Feedback Channels
Determine the number of normally open (NO) and normally closed (NC) signal contacts required for integration with the TCMS train control system.
Coil Drive Control
Supports standard locomotive power supplies of 24V, 48V, and 110V DC, and is equipped with a low-power electronic energy-saving module.
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