Adafruit push button power switch breakout adafruit 1400 p the adafruit push button power switch breakout allows a standard tactile switch to control a supply up to 3a and between 3 and 14v dc when the tactile switch is pressed it activates an analogue circuit that latches on and connects the input voltage to the output pin via a fet this is why such a light current device can switch such a high current supply when in the off state the board only consumes 0 5 micro a the board also featu