PWM DC motor speed controller is a very safe product.
When the situation is overcurrent, it will disconnect by itself. after cooling off a few seconds, the fuse will recovery automatically.
With high voltage and high current resettable fuse
Mini but useful
Operating voltage: DC 5-30V
Control power: 90W (maximum)
Quiescent current: 0.015A (standby)
PWM duty cycle: 1% -100%
PWM frequency: 10khz
Size: 29mm*23mm (excluding handles)
Total height: 15mm
Knob color: Send randomly
10 x PWM DC motor speed controller