The SZT20-CH-420E AC current transducer provides real-time isolated measurement of AC current in the grid or circuit and converts it to a 0-5V, 0-10V, or 4-20mA DC output signal. It can be integrated with various AD modules to form digital centralized acquisition systems, connected to PLCs for automatic control systems, or used with traditional analog and digital indicating instruments to display measured values. Features: 1. Utilizes mutual inductance for current monitoring, offering high detection accuracy, stable performance, and safe electrical isolation between input and output. 2. Measurable AC current ranges: 0-10A, 20A, 50A, 0-100A, 150A, or 200A (selectable models). 3. Output signal options: 0-5V DC, 0-10V DC, or 4-20mA DC. 4. Easy and convenient installation and operation; no need to connect the DC circuit in series during measurement. 5. Through-core design with isolation withstand voltage up to 2000V AC. 6. Magnetic hysteresis less than 1%, suitable for operation in strong magnetic field environments. 7. Enclosure made of self-extinguishing ABS material (UL 94V-0), ensuring safety and durability. 8. Designed for AC current monitoring, detection, overload protection, and use as an electronic switch in automatic control systems. 9. Suitable for applications requiring current-to-voltage or current-to-current signal conversion. 10. Features high overload capacity, high precision, high isolation, enhanced safety, low power consumption, and strong anti-interference performance. Specifications: Product Name: AC Current Transducer Model: SZT20-CH-420E Power Supply: - Voltage output type: Self-powered, no external power required - Current output type: Requires external DC 24V ±10% Input Current (AC): - 0-10A, 20A, 50A (SZT15 series) - 0-100A, 150A, 200A (SZT20 series) Output Signal (DC): - Voltage output: 0-5V or 0-10V - Current output: 4-20mA Turn-on Minimum Current: - 0.5±0.2A (round type) - 1.5±0.2A (clamp type) Maximum Overload Current: Up to 200% of rated current; do not exceed 200% of rated value Power Consumption: 1W Tape: 1% Accuracy: ±1% Maximum Leakage Current: 0.1mA Linearity: 10% to 100% of full scale Response Time: 200ms Core Wire Diameter Range: 0.35mm to 20mm Operating Temperature: -20°C to 60°C Operating Humidity: 5% to 95% RH (non-condensing) Housing Material: Self-extinguishing ABS (UL 94V-0) Insulation Withstand Voltage: 2000V AC at 50/60Hz for 1 minute Package Includes: 1 x AC Current Transducer Working Principle: 1. Based on electromagnetic induction, the device generates an induced current when the circuit current changes, transforming high current into a standardized low-level signal via a current transformer. 2. Integrated signal processing and output control circuits enable the generation and transmission of a 0-5V, 0-10V, or 4-20mA DC signal to downstream monitoring or control systems.