AC Contactors
Reliable AC switching solutions designed for motor control, industrial automation, and electrical power systems, ensuring stable and efficient operation.
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.
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FAQ
We are a manufacturer established in 1954 that specializes in the research, development, and manufacturing of new types of AC/DC contactors, relays, and AC/DC circuit breakers. We have our own R&D center and production facility in Shenyang.
Our core products include AC contactors (such as the BC98 series), DC contactors (such as the BC98-Z, BCZ2, BCZ4, BCZ5, and BCZ6 series), relays, and AC/DC circuit breakers, covering a wide range of rated voltages from low-voltage control circuits to high-voltage DC applications.
The products are widely used in industries such as rail transit, new energy (solar power and energy storage), electric vehicles and charging stations, mining machinery, and DC power distribution systems.
AC contactors rely on the natural zero-crossing of AC current to assist in arc extinction; DC circuits do not have a zero-crossing point, so they require more robust mechanisms—such as magnetic blowout, arc-extinguishing grids, or sealed arc chambers—to extinguish the arc. Therefore, AC contactors should not be used in DC circuits.
The company holds multiple national invention patents, and its products have been certified by numerous authoritative third-party testing organizations both domestically and internationally. Please contact us if you need certificates for specific models.
Yes. We support OEM/ODM partnerships and can accommodate custom specifications, brand printing, and custom packaging. Please provide your technical drawings and requirements.
Need a Reliable Railway Switching Solution?
Contact SY213 engineers for customized DC contactor solutions.