Description： SZC23 series AC current sensing switch is designed and manufactured to solve the AC current monitoring. It uses the principle of mutual inductance to sense the AC straight-through current, isolate the AC current, and output a normally open or normally closed switching signal to directly control various automation industrial equipment, such as flash, buzzer, relay, single-chip or other power load equipment. Compared with traditional mutual inductors, thermal protectors and other devices, using this device can not only get more accurate and more timely control, but can also greatly simplify the design and reduce costs.   Features: 1. Self-powered, no external power supply required. 2. Action current 0.2-30A AC, adjustable with a potentiometer. 3. LED indicator can conveniently and intuitively indicate the working status of the switch. 4. High-power MOS tube contactless electronic switch. 5. The switch has no limit on the number of opening and closing, and the reaction speed reaches the ms level. 6. Straight-through structure design, isolation withstand voltage up to 2000V.   Specification: Model: SZC23-NO-AL-CH Power supply: Not required Rated load: ≤ 0.5A@240V AC/DC Input current: 0.2-30A AC Switch on minimum: 0.5±0.2A Maximum overload: 100% Leakage current: ≤0.1A Accuracy: 1% Hysteresis: ≤1% Response time: ≤200ms Repeatability: 100% Working temperature: -20~60℃ Waterproof: IP30 Dimensions: 65*25*47mm / 2.56*0.98*1.85in Hole diameter: 10mm / 0.4in Package weight: Approx. 56g/2.0oz   Package list: 1 * Current Sensing Switch Features Easy To Use:: Current sensing switch is self-powered, requires no external power supply, operates at 0.2-30A AC, and can be adjusted with a potentiometer. Convenient And Intuitive:: The switch does not limit the number of opening and closing, the speed reaches ms level, and the LED indicator can indicate the working state of the switch. Accurate And Timely:: Current switch is a straight-through structure design with isolation withstand voltages up to 2000V and hysteresis of less than 1%. It can be used under strong magnetic conditions. High Quality:: High-power MOS tube non-contact electronic switch, the outer casing is made of self-extinguishing material ABS. Widely Used:: it is suitable for AC current measurement and monitoring, AC motor overload protection, automatic control system electronic switch.