• Rolex Industries

SS Punch Grid Resistance Box

Rolex Industries offers SS Punch Grid Resistance Box. Rolex make resistance boxes are designed to meet requirements of AC and DC applications for EOT cranes; winches, rubber mills; flour mills, coal mines, cement mills, power plants, conveyors, coke oven, blowers, etc., for speed control and developing starting torque. Assembly and function: punched steel resistance boxes consist of grids punched from nickel chromium steel alloy sheet. These grids are shock and vibration proof. These resistors are specially suited for steel mill duty, coal mines, etc. These resistors are available in a wide range of current ratings from 7 A to 800 A continuous. The series connection between adjacent grids is by means of copper jumpers. The resistors, after overloads of moderate duration become red hot but no damage is caused and retains their shape after overload disappears.