How to distinguish an AC MCB and a DC MCB? It is crucial to select the appropriate type of MCB for the electrical system you are working with. Using an AC MCB in a DC system or vice versa can lead to improper protection and potentially dangerous situations. Always refer to the manufacturer's specifications and consult with a qualified electrician or engineer to ensure the correct MCB selection for your specific application. #mcb #electric #cncelectric #cnc #electricalengineering #electricalwork