Features: 1. 100% brand new and high quality 2. High precision, more stable and long service life 3. It is an ideal choice for automated industrial equipment and store monitoring. 4. This 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 current through the AC, isolate the AC current, and output a normally closed switching signal to directly control various automated chemical equipment. 5. Widely used in substation, frequency conversion speed control device, inverter device, electrolytic plating, electric locomotive, street lamp monitoring, coal mine and other automation industries requiring current monitoring Specification: Condition: 100% Brand New Model: SZC25-NO-AL-CH Housing Material: ABS Self-Extinguishing Material External Power Supply: No Need, Product Self-Inductive Power Supply Switch Type: Normally Open Input Through Current: AC 0.5-50A Threshold Point Range: 0.5-50A AC Adjustable Switch Rated Load: AC/DC 0.3A at 240VAC Maximum Leakage Current: <0.1A Response Time: <200ms Hole Diamete r: φ 10 mm Product Size: Approx. 65 * 26 * 47mm / 2.6 * 1.0 * 1.9in Package List: 1 * Current Sensing Switch .