Current Transformers

About Current Transformers

Current transformers step down high primary currents to standardized low-level signals — typically 1A or 5A — that protection relays, energy meters, and PLC analog inputs can safely read. Our selection includes split-core CTs for retrofit installations without disconnecting conductors, solid-core CTs for new builds, and Rogowski coils for high-bandwidth transient measurement from Siemens, ABB, Schneider Electric, Crompton, and LEM. Accuracy class (0.5, 1.0, 3.0), rated primary current, burden (VA), and mounting style are the main specification parameters. For energy management and sub-metering applications, we carry CTs compatible with popular power monitors from Siemens SENTRON, Schneider PowerLogic, and ABB EQ series. Discuss your ratio and accuracy requirements with our technical sales team for matched CT and meter pairings.