Liyond Vacuum Contactor: Precision Switching for Industrial Power

As a leading vacuum contactor manufacturer, Liyond provides a wide range of Vacuum Contactors that are critical for the safe and frequent switching of electrical circuits in Low Voltage (LV) and Medium/High Voltage (MV/HV) power systems. These devices leverage advanced vacuum interruption technology to extinguish electrical arcs, ensuring superior performance, minimal maintenance, and enhanced safety in demanding industrial applications.

Vacuum contactors are primarily used for remote making and breaking of circuits, especially for applications requiring high operating frequency, such as motor control and capacitor switching.

Features and Design

Liyond's vacuum contactors are engineered for optimal reliability and efficiency, utilizing a robust, sealed design to maximize component life and safety.

Core Technology: Vacuum Interruption

The contacts are sealed within a high-vacuum interrupter (or "vacuum bottle"). When the contacts separate, the resulting arc is rapidly diffused and quenched by the vacuum, which offers superior dielectric strength.

Key Design Advantages:

• Superior Arc Quenching: Rapid arc extinction prevents external arc flash, protecting personnel and surrounding equipment.

• Extended Lifespan: Minimal contact erosion ensures an exceptionally long mechanical and electrical life (up to 1,000,000 operations for some models).

• Low Maintenance: The sealed chamber prevents contact oxidation and contamination, drastically reducing maintenance cycles compared to traditional air contactors.

• Compact Structure: Our designs are small and lightweight, facilitating easy installation in modern switchgear and control cabinets.

• Environmental Resilience: The vacuum-sealed construction guarantees reliable performance in harsh, dusty, humid, or potentially explosive environments (e.g., mining applications).

Product Categorization

Our contactors are primarily categorized by their rated voltage level and intended application, offering specialized solutions for different power system needs:

Low Voltage (LV) Vacuum Contactors

Designed for systems up to 1.6kV (e.g., 1140V), this category includes series like CKJ5 and CKJ20. Low voltage vacuum contactor is ideal for applications requiring frequent switching, such as the control of AC motors, transformer switching, and integration into specialized flameproof starters.

Medium/High Voltage (MV/HV) Vacuum Contactors

Covering systems from 3.6kV up to 12kV, this range features robust series such as CKG3 and JCZ5-12. MV vacuum contactor is essential for long-distance line control, switching of capacitor banks for power factor correction, and managing other high-capacity industrial equipment.

Ordering Information

To select the correct vacuum contactor for your application, please specify the following key details:

1. Model Series: Indicate the required series based on voltage and application (e.g., CKJ5, CKG3).

2. Rated Voltage (kV): Specify the system voltage (e.g., 1.14kV,7.2kV,12kV).

3. Rated Current (A): Provide the primary current value for the load (e.g., 250A,630A).

4. Coil Control Voltage: Specify the required control voltage for the electromagnetic system (e.g., AC220V or DC110V).

5. Poles & Configuration: Indicate the number of poles (e.g., 3-pole or 4-pole) and any specific configurations like mechanical or electrical interlocks.