2.Short circuit protection: there is (input 40A fuse) double short circuit protection, use more secure. 3. When using the boost power supply should pay attention to the following points: input power supply voltage must be above 10V. when the power supply is used for the input power supply, the input power and the output voltage of the input power supply are the first to be unloaded. 1.Over current protection: there is a certain range of error in the input over 30A, automatically reducing the output voltage. 4.Then pick up the load. (must that the switching power supply has been working). when the constant current mode is used to set the voltage, the constant voltage must be higher than the input voltage.Do not use the way of short circuit output current, the circuit structure of the boost module can not be adjusted in short circuit way., Weight: 0.50596089129 pounds, Manufacturer: Histeaa