400A high voltage DC contactor operates as a switch, allowing or interrupting the flow of DC electricity in high voltage applications, typically ranging from a few hundred volts to several kilovolts. These HVDC contactors are crucial in various industrial and commercial applications, such as electric vehicles (EVs), renewable energy systems (like solar and wind), railways, and power distribution networks.

Specification

Load Characteristic Curve

Coil Temperature Rise Curve

Installation Dimension

Wiring Diagram

Tips: How does a high voltage DC contactor work?

A high voltage DC contactor is an electrical switching device used to control and switch high-voltage DC circuits. Here's how it works:

• Electromagnet drive: When the contactor coil is energized, the electromagnet generates a magnetic field that attracts the movable contacts and makes them come into contact with the stationary contacts, thus closing the circuit.
• Arc extinguishing device: In a high-voltage DC circuit, an arc is generated when the circuit is opened. The contactor is equipped with a special arc extinguishing device, such as a magnetic blowing device or an air blowing device. The arc is elongated, cooled and finally extinguished by arc blowing to ensure safe breaking.
• Auxiliary contacts: Contactors are also equipped with auxiliary contacts for controlling signal circuits or providing status feedback.
• Mechanical structure: The mechanical interlocking mechanism inside the contactor ensures that the contacts move quickly and reliably during the opening and closing processes, reducing arc generation time and loss.

High voltage DC contactors are widely used in power systems, rail transit, energy storage systems and other fields to provide efficient and safe current control and protection.