The RAC series are adapted to operation in hard industrial conditions. Their main virtues are high durability, overvoltage endurance, no switching overloltages and silent operation.
Application – voltage regulation of: • 3-phase transformers; • Resistance furnaces with silit or resistant heating units; • Incandescent lamps.
Operational advantages: • Comfortable assembly and wiring in control cabinets; • High protective level, all conductive parts are shielded; • Simplicity of fuses replacement; • Visual indication of control correctness; • Visualization of Power setting; • Easy repair in case of failure; • Standard input signal 0-10V, 4-20mA, potentiometer.
Extraordinary stability and reliability is obtained by: • Thyristor selection according to expected values of load and work conditions; • Using special heat sinks and fans to provide optimal work temperature; • Using RC snubbers circuit for protection against switching overvoltages; • Using ultra quick fuses for thyristors short-circuit protection.
The RAC series are adapted to operation in hard industrial conditions. Their main virtues are high durability, overvoltage endurance, no switching overloltages and silent operation. 
