Toroidal, AC Leakage Current Sensors

ALS50 AC Leakage Current SensorThe ALS AC leakage current sensors are designed for incorporation into products used to measure AC currents at the micro-ampere level. The sensors use a “zero flux” technique to measure micro ampere level AC currents. Shielding and primary to secondary isolation provide a “noise free” secondary output signal proportional to the primary AC current.

Features: Specifications:
Model Input Range Opening
ALS12B Data Sheet (616kb) 0.010 to 100mA 12.4mm (0.49″)
ALS25 0.010 to 100mA 26.0mm (1.02″)
ALS50 Data Sheet (592kb) 0.010 to 100mA 50.0mm (1.96″)



Many of our products can be designed and manufactured to meet the specific application requirements. For a no obligation technical evaluation, please provide the specific performance requirements to engineering@tichenassociates.com.