Self-powered adjustable current switch (0.2–30A) Key benefits No external power needed: draws its operating power from the monitored circuit, so installation is simpler and there is no separate supply to wire. Protects devices and batteries: automatically switches based on adjustable current thresholds to prevent overloads, reduce battery drain, and stop unwanted current flow. Precise, user-adjustable control: the built-in potentiometer lets you set the trip/action current anywhere from 0.2A to 30A to match your load and protection needs. Clear status feedback: the integrated LED indicates the switch status at a glance, making setup and troubleshooting faster. Long-life, reliable switching: a high-performance MOS tube provides contactless switching for efficient operation, reduced wear, and minimal arcing. Features and performance Adjustable action current: 0.2A to 30A via simple potentiometer control. Self-powered operation: no external power supply required. LED indicator: shows working status and simplifies diagnostics. Solid-state switching: MOS-based design for efficient, contactless switching and improved durability. Compatible with loads within the 0.2–30A range; designed to manage switching and protection tasks where adjustable current sensing is needed. How this solves common problems Eliminates the need to run a separate power line to the switch, saving installation time and wiring complexity. Prevents excessive current draw and potential damage to batteries, wiring, and loads by tripping at a user-defined current level. Replaces mechanical relays in applications that need frequent switching or where contact wear and arcing are concerns. Simplifies configuration and monitoring with a single potentiometer and clear LED status. Practical applications Battery protection and auto-disconnect: use it to disconnect noncritical loads when current exceeds a safe threshold or to prevent deep discharge in battery-backed systems. Motor, pump, and fan protection: set a current limit to detect stalls or overloads and switch the load off before damage occurs. LED lighting and auxiliary load control: protect lighting circuits or auxiliary devices by switching them out when they draw abnormal current. Installation and compatibility notes Intended for integration into circuits where the load current falls within the adjustable 0.2–30A range. Adjust the potentiometer to the desired activation current and verify operation using the LED indicator. Because the device is self-powered, ensure proper wiring so the unit can sample the load current correctly. What makes it stand out Combines easy installation (no external supply) with flexible, precise current control and reliable solid-state switching. The result is a compact protection and control solution for a wide range of electrical loads.