SPECIFICATIONS

40A: Suitable for some small electronic equipment or experimental circuits, such as small DC motor drive, small LED lamp group dimming, etc. The current demand of these loads is small, and the working voltage is usually below 40V.
80A: It can be used for some medium-power equipment, such as medium-sized DC motor speed control, some circuits in automotive electronics, etc. The working current of these equipment is relatively large, and it may need to work in a voltage environment below 60V.
200A: Suitable for some occasions with high current requirements but low voltage, such as charge and discharge control of large battery packs, low voltage and high current load drive in some industrial equipment, etc. However, it should be noted that providing such a large current at a voltage of 40V requires relatively high power supply and wiring.
300A:Commonly used in high-voltage, high-current industrial applications, such as variable frequency drives for large motors, and some control circuits in high-voltage DC transmission systems.

With LED working indicator.
The switch module does not have self-locking function, and the two poles of the module "switch" can only be connected with a self-locking switch to realize the opening and closing of the module. That is to say, the function of this module is to control the large current output of the small switch and reduce the current requirements of the switch itself.
These high-power MOS transistors are often used in the PWM regulation electronic switch control board to realize the power management of electronic equipment and the precise control of voltage and current. Through the control of the PWM signal, the power can be turned on and off, and the output power of the power can be adjusted to meet the needs of different loads.