This
        is a Power Controller device to control "Single Phase" and
        "Three Phase" AC power.  The single phase and three phase
        devices control power through smooth thyristorised firing. They control AC
        power according to reference input from a particular parameter
        controller. These phase controllers are the ultimate solution for power
        saving. 
        These phase controllers give an optimum and continuous AC power, which
        prolongs the life of the heater. A solid State relay is also considered
        an AC power controller.
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