SZC03 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. _x000D_ _x000D_ Features: _x000D_ 1. Self-powered, no external power supply required. _x000D_ 2. Action current 0.5-200A AC, adjustable with a potentiometer. _x000D_ 3. LED indicator can conveniently and intuitively indicate the working status of the switch. _x000D_ 4. High-power MOS tube contactless electronic switch. _x000D_ 5. The switch has no limit on the number of opening and closing, and the reaction speed reaches the ms level. _x000D_ 6. Straight-through structure design, isolation withstand voltage up to 2000V. _x000D_ 7. Hysteresis is less than 1% and can be used under strong magnetic conditions. _x000D_ 8. The outer casing is made of self-extinguishing material ABS. _x000D_ 9. Widely used in automation industry that requires current monitoring such as substations, variable frequency speed control devices, inverter devices, electrolytic electroplating, street lamp monitoring, etc. _x000D_ _x000D_ Specification: _x000D_ Model: SZC03-NC-AL-CH _x000D_ Power supply: Not required _x000D_ Rated load: 0.3A@135V AC/DC _x000D_ Input straight-through current: 0.5-200A AC _x000D_ Switch on minimum: 0.50.2A _x000D_ Maximum overload of straight-through current: 200% _x000D_ Accuracy: 10% _x000D_ Power consumption: 1W _x000D_ Leakage current: 1mA _x000D_ Hysteresis: 1% _x000D_ Response time: 200ms _x000D_ Working environment: -30~70, 0-95%RH _x000D_ Dimensions: 62*90*25.5mm / 2.4*3.5*1.0in _x000D_ Hole diameter: 20mm / 0.8in _x000D_ Package weight: Approx. 84g/2.96oz _x000D_ _x000D_ Package list: _x000D_ 1 * Current Sensing Switch _x000D_ _x000D_ Note: _x000D_ 1. Due to the difference between monitors and light effects, the pictures may not reflect the actual color of the item. _x000D_ 2. Please allow slight error due to manual measurement. Thanks for your understanding.