Silicon Controlled Rectifier (SCR)
This electronically controlled relay is available for single phase and 3-phase, zero cross firing and phase angle firing. A phase angle fired SCR can switch power in less than 10 millisecond. A phase angle fired SCR "must" be used for infrared heating applications (examples: furnaces, quartz infrared heaters, T3 lamps) and is also commonly used in the solar industry and heat treatment applications. We recommand to use a zero cross power controller for industrial air heating applications. see also FAQ about SCR power controller.