1. The shell is made of self-extinguishing ABS material, self-powered, no external power supply is needed, and the AC current 0.5/1.5A‑200AAC can be adjusted by a potentiometer. 2. LED status indicator, can conveniently and intuitively indicate the working status of the switch, high-power MOS tube contactless electronic switch. 3. The switch has no limit on the number of on-off operations, the response speed reaches the ms level, through-core structure design, and the isolation voltage is up to 2000V. 4. The hysteresis is less than 1%, and it can be used under strong magnetic field conditions. The maximum AC and DC load of the switch is 0.3A 135V AC/DC. 5. It has the advantages of high accuracy, stable performance, and long service life. It is an ideal choice for automatic industrial control equipment and power monitoring. Item Type: Current Mutual Inductance Switch Material: Plastic Model: SZC03-NO-F-CH Switch Type: Normally On Current Trip Value: Not Adjustable Power Supply: Self-Powered Input Through-Core Current: 0.5-200A AC Rated Load: 0.3A at 135V AC/DC (Must not be exceeded under any circumstances) Minimum Value of Switch Conduction: 0.5±0.2A Maximum Overload of Through-Core Current: 200%, the through-core current must not exceed 200% of the rated value Accuracy: 10% Power Consumption: ≤1W Maximum Leakage Current: ≤1mA Hysteresis: ≤1% Response Time: ≤200ms Working Temperature: -30~70℃ Humidity: 0-95% (No Condensation) Square Hole Diameter: Approx. 20 x 20mm/0.8 x 0.8in Application: Widely used in substations, frequency conversion speed regulation devices, inverter devices, electroplating, electric locomotives, street light monitoring, coal mines, and other automation industries that require current monitoring. Product Introduction: The SZC03 series AC current induction switch is designed and manufactured to solve AC current monitoring. It uses the principle of mutual inductance to isolate AC current by inducing AC through-core current, outputting a normally open or normally closed switching signal, and directly controlling various automated industrial control devices. Compared with traditional transformers, thermal protectors, and other devices, using this device can not only provide more accurate and rapid control effects but also greatly simplify the design. 1 x Current Mutual Inductance Switch