A fall-type circuit breaker is a commonly used short-circuit protection switch for 10kV distribution lines and transformer substations.

The fuse cut-out is installed on the 10kV distribution line branch, capable of reducing the blackout area. With a clear break point, it functions as an isolation switch, providing a safe working environment for maintenance sections of lines and equipment.

Installed on the distribution transformer, it can serve as the main protection for the transformer.

It boasts economic efficiency, ease of operation, and strong adaptability to outdoor environments, and is widely used in 10kV power distribution lines and the primary side of distribution transformers for protection and equipment commissioning and disconnection operations, having gained widespread adoption.