The ZMCT103C is a PCB-mount precision AC Current Transformer (CT) used for non-contact AC current measurement in energy meters, power monitoring systems, overload protection, and industrial control equipment. It provides galvanic isolation between the measured AC line and the measurement circuit. Specifications Parameter Specification Model ZMCT103C Input Current 0–10 A AC Rated Output Current 5 mA Turns Ratio 1000:1 Accuracy Class 0.2 Linearity ≤0.2% Isolation Voltage 4500 VAC Operating Frequency 45–55 Hz (50/60 Hz applications) Operating Temperature -40°C to +85°C Mounting PCB Through-Hole Features • High accuracy current measurement • Electrical isolation from mains • Compact PCB mounting • Low phase error • Excellent linearity • Long service life • Suitable for 50/60 Hz AC systems Applications • Smart Energy Meters • Digital Ammeters • UPS Systems • Inverters • Solar Monitoring Systems • Industrial Automation • Motor Current Monitoring • Over-current Protection • Power Monitoring Equipment