To upgrade a electrical equipment by using products suitable for the particular application or in special environmental conditions.
If it is considered as proper when the standard MCCB/ELCB is not chosen to use in a special characteristic of the load, or various environment conditions, the special breaker is needed.
This kind of breaker is named as the plug-in breaker for switchboards. This can be connected to the main busbar of the switchboard directly to assist with the standardization design, the safety, the enlargement of circuits, and the time saving of power outage at the maintenance of a equipment.
This kind of breaker is named as a fire resistance breaker for using within the emergency power switchboards.
These breakers include various types. In case of depending on a kind and a characteristic of the load, no standard MCCBs or ELCBs are used.
As a result of making a DSN switch by omitting the overcurrent tripping device of a MCCB, it is used as a switching device having high operating capacities.
The breaker is used in the varied environment. For using in the environment different from standard conditions, several type of breakers are provided to each special environment.