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Thyristor Power Controllers Information Center

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How do I select a Thyristor?

First consider the load and/or element type used; the most common is referred to as a fixed or normal resistance. This element doesn’t change more than 10% in resistance over time or with temperature variations. In our industry this accounts for more than 85% of elements used. Typical thyristor firing will be zero crossover either with a DC logic control signal (for zero crossover firing) or an analogue 4-20mA or 0-10V (for burst firing). No other element consideration or protection is really needed although having the longest cycle time that controls the load adequately is recommended to extend element life.

For additional load types including variable resistance elements, short-wave infrared lamps, inductive or transformer loads we recommend using our Product Selection Tool and/or contacting our technical team to help choose the right thyristor power controller for your application. Remember: we have the right product for all applications.