The BC1 series of rotor -arm sliding wire porcelain disk variants are suitable for voltage, current adjustment, and cross -current
electric motor speed adjustment in industrial electrical equipment with a voltage of no more than 500 volts. The barrier is used
as a resistance material to the round ceramics skeleton by the Kang copper line or nickel chromium wire. The resistance materials
are coated with high temperature enamel coatings and bonded on the ceramics chassis except for sliding contact surface. The
sliding of the grip and brush to obtain the resistance value of the change. The variable resistor is separated and protected. Its
protective type is the barrier plus metal protective box shell, which is equipped with a handwheel.





















