This video is about construction and working of a Miniature Circuit Breaker(MCB), Also, why do they have two mechanisms? Previous video: https://www.youtube.com/watch?v=rkbjHNEKcRw Chapters: 00:00 - Intro 00:35 - Inside the MCB 01:43 - MCB during Overload 03:33 - MCB during Short-circuit 04:00 - Need of Thermal trigger 04:43 - Need of Magnetic trigger 05:05 - Outro #MCB #Saftey