CTSR Series Leakage Detection Current Sensors

LEM CTSR series is designed for the measurement of DC, AC, and pulsed currents ranging from 0.3 A_RMS to 1 A_RMS nominal, featuring galvanic separation between the primary and secondary circuits. These sensors are designed for non-contact, compact, and accurate milliamps measurement, specifically for residual or leakage current measurement. With low offset drift, they are intended for PCB mounting.

CTSR models have an additional pin at the output for more flexibility in applications. This pin provides access to the internal voltage reference which can be fed to the reference of an A/D converter. This extra pin can also receive the internal reference of the digital signal processor or A/D converters commonly used in power electronics, allowing cancellation of the reference temperature drift. The CTSR-current sensors utilize closed-loop Fluxgate CTSR type technology, ensuring high accuracy, particularly in industrial applications.