A Practical Guide to Setting L / S / I Protection CorrectlyQ1. What Is “Three-Stage Protection”?Three-stage protection refers to the commonly used electronic trip functions in MCCBs (Molded Case Circuit Breakers): 1. Long-Time Delay (L)Purpose: Overload protection and temperature-rise controlTrip cu
Why Is Less Arcing Not Always Better?Many people instinctively think, “Arcing is troublesome—wouldn’t it be better if there were no arc at all?”In AC systems, however, the reality is exactly the opposite.If the contacts were to separate and forcefully interrupt the current, the energy stored in the
In many industrial and infrastructure projects, the "2 ACBs + controller" solution is becoming increasingly popular.
