Conduction and Contact: The path for current flow, ensuring stable current transmission during high-to-low voltage switching.

Elasticity and Pressure: The contact fingers, through spring mechanisms, generate elasticity, maintaining tight contact with the moving contact to ensure reliable conduction and adapt to minute changes in the contact point.

High Requirements: Extremely high requirements are placed on the conductivity, mechanical strength, and stiffness of the materials to withstand high currents, high voltages, and frequent operation.

Conductive Pivot: Provides the main conductive path and structural support using a hollow column type design.

Base Plate: The essential base connecting the conductive pivot and the contact fingers.

Contact Fingers: Multiple pairs elastically connected to the conductive pivot via pins, forming a contact surface for holding the moving contact.

Spring Mechanism: Precision installed between the contact fingers to provide elasticity and ensure consistent contact pressure.

Determines Equipment Lifespan: As a core wearing part of high-voltage switches, the wear rate (≤0.1mm/10,000 operations) and arc ablation resistance are primary factors limiting service life. Reliable stationary contacts are required to operate for up to 30,000 cycles.

Ensures Power Grid Safety: Performance dictates the reliability of control devices in power systems. Unstable contact due to fatigue or insufficient spring force can trigger abnormal resistance or arc discharge, preventing major accidents in UHV power grids.