Features Working Principle: It uses mutual inductance principle to sense AC through current, isolate AC current, output normally open or normally closed switching signals, and directly control various automated industrial equipments, such as flasher, buzzer, relay, monolithic or other power load equipments. Improved Function: The SZC03 series AC current sensing switches are designed and manufactured to solve the problem of AC current monitoring. Compared with traditional devices such as transformers and thermal protectors, the use of this device not only gives more accurate and timely control, but also greatly simplifies design and reduces cost. Straight-through structure: self-powered, no external power supply required. Action current 0.5-200A AC, adjustable by potentiometer. Straight-through structure design, isolation withstand voltage up to 2000V. 3. Indicator light: LED indicator light can easily and intuitively show the working status of the switch. High power MOS tube non-contact electronic switch, no limit on the number of opening and closing times, with millisecond response speed. Applications: Widely used in automation industries that require current monitoring, such as substations, frequency control devices, inverter devices, electrolysis and plating, and street light monitoring. Specification: Model: SZC03-NC-AL-CH Power supply: Not required Rated load: 0.3A@135V AC/DC Input straight-through current: 0.5-200A AC Switch on minimum: 0.5±0.2A Maximum overload of straight-through current: 200% Accuracy: 10% Power consumption: ≤1W Leakage current: ≤1mA Hysteresis: ≤1% Response time: ≤200ms Working environment: -30~70℃, 0-95%RH Dimensions: 62*90*25.5mm / 2.4*3.5*1.0in Hole diameter: 20mm / 0.8in Package weight: Approx. 84g/2.96oz Package list: 1 * Current Sensing Switch Note: 1. Due to the difference between monitors and light effects, the pictures may not reflect the actual color of the item. 2. Please allow slight error due to manual measurement. Thanks for your understanding. Package List