SZC23 series AC current sensing switch is designed to monitor AC current using the principle of mutual inductance. It senses straight-through AC current, provides electrical isolation, and outputs a normally open or normally closed switching signal to directly control various industrial automation equipment such as lights, buzzers, relays, microcontrollers, or other powered loads. Compared to traditional current transformers, thermal protectors, and similar devices, this switch offers more accurate and timely control while simplifying system design and reducing overall costs.Features: 1. Self-powered operation – no external power supply required. 2. Adjustable trip current range from 0.2A to 30A AC via built-in potentiometer. 3. LED indicator for clear visual confirmation of switch status. 4. High-power MOSFET-based contactless electronic switching. 5. Unlimited mechanical life with millisecond-level response speed. 6. Straight-through design with isolation withstand voltage up to 2000V. 7. Hysteresis less than 1%; suitable for use in strong magnetic environments. 8. Enclosure made of self-extinguishing ABS material. 9. Ideal for AC current monitoring, motor overload protection, and automatic control systems.Specifications: Model: SZC23-NO-AL-CH Power Supply: Not required Rated Load: 0.5A @ 240V AC/DC Input Current: 0.2–30A AC Turn-On Threshold: 0.2A minimum Maximum Overload Capacity: 100% Leakage Current: 0.1A Accuracy: ±1% Hysteresis: ≤1% Response Time: 200ms Repeatability: 100% Operating Temperature: -20°C to +60°C Water Resistance: IP30 Dimensions: 65 x 25 x 47mm (2.56 x 0.98 x 1.85 inches) Conductor Hole Diameter: 10mm (0.4 inches) Package Weight: Approx. 56g (2.0 oz)Package List: 1 x Current Sensing SwitchNote: 1. Due to differences in monitors and lighting conditions, actual product color may vary slightly from images. 2. Please allow slight measurement deviations due to manual measurement.