Advanced High Voltage DC Contactors Resin provides reliable and efficient switching solutions for modern power systems. Through advanced resin encapsulation, these contactors achieve superior arc suppression, high dielectric strength, and long-term insulation stability, even under extreme voltage and current conditions.
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With over 20 years of experience and more than 500 satisfied customers across 50+ countries, HIITIO is your trusted partner for high-voltage DC solutions in electric vehicles, solar energy systems, energy storage applications, and more.
Superior Performance for High-Voltage Applications
This sealing method uses epoxy potting for reliable encapsulation. The arc chamber, made of a plastic shell and filled with nitrogen, relies on a magnetic blowout mechanism for arc suppression. Unlike ceramic brazed sealing, it avoids costly equipment and strict material requirements, making production simpler and more economical.
The performance and reliability of HVDC resin contactors largely depend on the precision of their manufacturing processes. At HIITIO, every step is designed to ensure maximum insulation, durability, and safety.
Precisely mixed epoxy resin is used for encapsulation, providing strong insulation and environmental resistance.
A plastic housing filled with inert gas (nitrogen) enhances arc-quenching capability.
Magnetic fields guide and stretch the arc, ensuring fast and safe extinguishing.
Vacuum potting and pressure curing prevent air bubbles and cracks, improving long-term reliability.
Each unit undergoes dielectric, temperature rise, life cycle, and insulation strength testing.
Our High Voltage DC Contactors Resin series incorporates cutting-edge technology to deliver unparalleled performance and reliability in the most demanding applications.
Designed to handle extreme voltage conditions up to 1500V DC.
Advanced resin technology provides superior insulation and protection
Capable of managing continuous currents up to 600A
Exceptional durability with operational lifespan exceeding 1000 cycles
Operational stability in extreme temperatures from -40°C~+85°C
Space-saving construction ideal for limited installation environments
Understanding how HVDC resin contactors operate helps engineers and integrators design safer and more efficient systems
When the coil receives a signal, a magnetic field is generated, pulling in the moving contact.
Once closed, DC current flows stably through the circuit.
During disconnection, an arc forms, which is elongated and extinguished by magnetic blowout and inert gas.
Resin encapsulation isolates internal parts from external conditions, ensuring long-term stability.
Maintains safe operation even under high voltage, large current, or strong vibration environments.
Every aspect of our High Voltage DC Contactors Resin series is designed with performance, reliability, and safety in mind. Our proprietary resin encapsulation process ensures superior insulation properties and mechanical strength.
Our High Voltage DC Contactors Resin series is designed for versatile applications across multiple industries, providing reliable performance in critical systems.
Ideal for solar power inverters and wind turbine systems
Perfect for EV charging stations and battery management systems
Reliable performance for heavy-duty industrial applications
Essential component for battery energy storage systems
Resin contactors are more compact, cost-effective, and highly sealed, making them the preferred choice for modern EVs, charging stations, and energy storage systems.
Yes. Engineered for reliability, HIITIO contactors operate smoothly from −40°C to +85°C with up to 85% humidity, ensuring stable performance in harsh outdoor and automotive environments.
By using inert gas chambers and magnetic blowout technology, HIITIO guarantees superior arc suppression, reduced wear, and longer operational life, even under high-voltage switching.
Simply match your system’s voltage (1000/1500Vdc) and current needs (50–600A). HIITIO provides expert technical guidance and tailored solutions to ensure the perfect fit.
HIITIO offers comprehensive technical support, testing assistance, and long-term partnership services, helping major customers achieve reliable, cost-efficient, and scalable solutions.
HIITIO® was established in 2018 as a result of Hecheng Electric introducing a mature R&D team. HIITIO specializes in producing high-voltage DC electrical devices for EV, solar energy systems, and energy storage applications.
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