Silver Tungsten (AgW) Series

Silver tungsten contacts combine silver's conductivity with tungsten's arc-erosion resistance, the standard material for low-voltage electrical apparatus where contact resistance matters as much as arc handling. Where CuW (copper tungsten) dominates in MV vacuum interrupters, AgW dominates in LV contactors, motor starters, relays, and air circuit breakers. The silver matrix gives lower contact resistance than copper at the same tungsten content; the tungsten phase handles arc duty during making and breaking. We supply AgW contacts across the full grade range covered by GB/T 8320-2025 (Chinese national standard for copper-tungsten and silver-tungsten electrical contacts), from AgW30 for high-conductivity general-purpose duty through AgW80 for severe-duty motor starters. Most production is in tip / button form for LV contactors, with custom geometries available from drawing.