Features:Control of various automatic industrial control equipment, flash, buzzer, relay, single chip, or other power load equipment.Widely used in substation, frequency control device, inverter device, electrolytic plating, electric locomotive, street lamp monitoring, coal mine and other need current monitoring automation industry. Compared with traditional transformer and thermal protector, it has the advantages of high accuracy, stable performance and long service life.Using the electromagnetic mutual inductance principle of current, the advanced switch output detection, monitoring and protection alarm type products without power supply technology are adopted.An ideal choice for automatic industrial control equipment and electric power monitoring.The current-sensing switch is for safe, convenient monitoring or detecting the current of electric equipment.Specification:Power Supply:Self-Powered,No External Power Supply is Required.Starting Current / Frequency Range: 0.2-30A, 40-400HzStartup Time: <0.1 SecondsSwitch Contact Capacity: Maximum: 0.5A@12-240VAC/DCOverload Capacity: +100%@30AThreading Hole Diameter: 9mmIndicator Light: Red and GreenInstallation Form: Flat InstallationShell Material: Fireproof ABSWorking Temperature: -10~55 CWorking Humidity: 0-95%, No CondensationIP Rating: IP30Size:46 x 65 x 25mm / 1.81 x 2.56 x 0.98inPackage List:1 x Sensing Switch1 x Users Manual(Chinese & English).