The primary function of a 1000V DC Main Relay is to act as a switch that controls the flow of electrical current in high-voltage circuits. Operating on the principle of electromagnetic induction, the relay contains a coil that, when energized, generates a magnetic field. This magnetic field attracts or repels a movable armature, which in turn opens or closes the electrical contacts inside the relay. This mechanism allows the relay to either complete or interrupt a circuit, depending on the operational requirements.

    Given the high-voltage operating range of 1000V DC, these relays must be designed with robust insulation materials and components to handle the electrical stress. The components inside the relay must be rated for maximum voltage and current levels to prevent arcing, short circuits, and other potential hazards associated with high-voltage systems.