Micro Current Transformer Sensor HWCT-5A/5mA

From the shop's description

Rated Primary Current at 50/60 Hz: 5A Maximum Primary Current at 50/60 Hz: 20A Turns Ratio: Np:Ns = 1:2500 Current Ratio: 5A:2mA Winding D.C. Resistance at 20 C: 155 Operating Temperature: -40 to 85 C Storage Temperature: -45 to 90 C Dielectric Withstanding Voltage: 4,000 V / 1 mA / 1 sec Dimensions: 18 x 17 x 10 mm (L x W x D).