Industrial control transformers (also known as machine tool transformers) fill the size range from 25 - 7500 VA and up to 600 V. They are used to step-up or step-down the supply voltage for the operation of electromagnetic devices such as timers, relays, contactors or solenoid switches. A critical element in their proper usage is to supply correct voltage during short-term periods of inrush currents, providing isolation to control components from power surges and lighting circuits. Rugged split side covers provide easy access to wiring compartments and allow installation with either solid or flexible conduit Many multi-voltage primary and secondary models increase range of applications per unit Solidly fixed terminals with standard combination screw connections facilitate wiring All terminals clearly identified additive polarity markings Every coil bobbin-wound for greater efficiency and superior heat evacuation capability