The SZC23 series AC current sensing switch is designed and manufactured to solve AC current monitoring needs. It adopts the mutual inductance principle to sense AC straight-through current, isolate AC current, and output a normally open or normally closed switching signal—this signal can directly control various automated industrial equipment, such as flashers, buzzers, relays, microcontrollers, or other power load devices. Compared with traditional transformers, thermal protectors, and similar devices, this product not only enables more accurate and timely control but also significantly simplifies design processes and reduces costs. Features: Self-powered, no external power supply required. AC operating current range: 0.2-30A, adjustable via a potentiometer. LED indicator for convenient and intuitive display of the switch’s working status. High-power MOS tube non-contact electronic switch. No limit on the number of on/off cycles; response speed reaches the millisecond (ms) level. Straight-through structure design; isolation withstand voltage up to 2000V. Hysteresis less than 1%, suitable for use in strong magnetic environments. Outer casing made of self-extinguishing ABS material. Applicable scenarios: AC current measurement and monitoring, AC motor overload protection, electronic switches for automatic control systems, etc. Specification: Model: SZC23-NO-AL-CH Power Supply: Not required Rated Load: 0.5A@240V AC/DC Input Current: 0.2-30A AC Minimum Switch-On Current: 0.2A (Note: Corrected ambiguous "0.50.2A" to standard "0.2A" for clarity) Maximum Overload: 100% Leakage Current: 0.1A Accuracy: 1% Hysteresis: 1% Response Time: 200ms Repeatability: 100% Working Temperature: -20~60℃ (Note: Added temperature unit "℃" for standardization) Waterproof Rating: IP30 Dimensions: 652547mm / 2.560.981.85in Hole Diameter: 10mm / 0.4in Package Weight: Approx. 56g / 2.0oz Package List: 1 * Current Sensing Switch