It is a circuit component which provides to on-off the no load circuits safely. It should not be opened under the load. There are two kinds of disconnectors ; internal and external.
Internal type disconnectors are installed on the wall or metal sheet cells depending on usage place within the building. These disconnectors are used within the modular cubicle.
External type disconnectors are manufactured appropriate for outdoor conditions. Command mechanism is mounted in the manner that a man standing can do to on-off in a comfortable way. They are four types as normal, with fuse, with earthing and with fuse earthing.