Hi Everyone,
I am fairly new to automation and controls, control panels, PLC world. I am trying to better understand the protection for motors.
What I am trying to understand is, we typically use a MPCB (Motor Protection Circuit Breakers), Contactor and an Overload relay to protect the motor. Can someone explain to me in layman's terms the functions of each of these devices? For instance, I know the overload relay keeps the motor from overloading. But I also understand the MPCB can also provide overload protection for the motor. So why have both? And what is the contactors main function? Is it to basically manually and electrically a shut off?
Any advice is much appreciated.
I am fairly new to automation and controls, control panels, PLC world. I am trying to better understand the protection for motors.
What I am trying to understand is, we typically use a MPCB (Motor Protection Circuit Breakers), Contactor and an Overload relay to protect the motor. Can someone explain to me in layman's terms the functions of each of these devices? For instance, I know the overload relay keeps the motor from overloading. But I also understand the MPCB can also provide overload protection for the motor. So why have both? And what is the contactors main function? Is it to basically manually and electrically a shut off?
Any advice is much appreciated.