In Electrical Engineering, A Switch Is An Electrical Component That Can "Make" Or "Break" An Electrical Circuit, Interrupting The Current Or Diverting It From One Conductor To Another. The Mechanism Of A Switch Removes Or Restores The Conducting Path In A Circuit When It Is Operated. The Main Switch Board Is an Intermediate Installation in the Ship’s Power Distribution Circuit Connecting the Power Generators and Power Consumers. The Power Generators On Ships Are Auxiliary Engines With Alternators And The Consumers Are Different Engine Room Machineries Such As Motors, Blowers Etc.