Air circuit breaker working course, in this course we will delve into the essential principles and operational mechanics of Air Circuit Breakers (ACBs), crucial components in electrical power distribution systems. Starting with an introduction to the basic functions of ACBs, we will explore how they provide overcurrent and short-circuit protection by interrupting the flow of electricity in faulty circuits. You will learn about the key components of ACBs, including the contacts, arc chutes, trip units, and operating mechanisms. The course will cover the detailed working process of ACBs, highlighting the arc quenching methods that use air as the medium to extinguish the arc when a fault occurs. We will discuss the tripping mechanisms, including thermal, magnetic, and electronic trip units, and their role in detecting and responding to fault conditions. Additionally, we will address the installation, configuration, and maintenance practices to ensure the reliable operation of ACBs. By understanding the working principles and components of ACBs, you will gain valuable insights into their application in various industrial and commercial settings. Join us to master the fundamentals of Air Circuit Breaker working and enhance your expertise in electrical protection systems.