Disconnector

They are often found in electrical distribution and industrial applications, where machinery must have its source of driving power removed for adjustment or repair.

Disconnectors can be operated manually or by a motor, and may be paired with an earthing switch to ground the portion that has been isolated from the system for ensuring the safety of equipment and the personnel working on it.

High-voltage disconnectors are used in electrical substations to allow isolation of apparatus such as circuit breakers, transformers, and transmission lines, for maintenance.

The major types of disconnectors are: These are selected based upon the sub-station layout, clearances available and space constraints.

The usage of this device instead of a disconnector is limited due to the fact that the open gap is not clearly visible and many doubts in term of safety arise during maintenance activities.