Control Transformers

A Control Transformer is a device used to transform or "Step down” a high main circuit voltage to a lower voltage which is then used to operate the control or switching components of the main circuit. These devices are commonly used in industrial starter circuits where the main circuit voltage is not suitable for use in the control circuit and whereas separate control circuit feed would not be practical. A control transformer is used to supply control power thus allowing lower, safer and more efficient control circuit voltage to be used in high working voltage applications. The excellent inrush current handling characteristics of the transformer also makes the system more efficient.