What is a Microcontroller?
Microcontroller Definition
A microcontroller is an IC that processes commands from a PC via protocols like Serial, Ethernet, and CAN.

Microcontroller Components
Transistor
Diode
Resistors
Relay
LED
Digital Output
The microcontroller’s digital output is a low-amperage signal, suitable for small loads like LEDs.
Transistor Function
The transistor acts as a driver, providing the necessary current to the relay to control the circuit breaker.
Working Principle
The microcontroller sends a command to turn on the transistor, which activates the relay and switches the circuit breaker.
