The VKY-12 series side-mounted solid-sealed high-voltage vacuum circuit breaker is an indoor high-voltage switching device, suitable for three-phase power systems with a rated voltage of 12kV and a frequency of 50Hz. It is used for protection and control purposes. Due to the special advantages of vacuum circuit breakers, it is particularly suitable for applications requiring frequent operations at rated current or multiple interruptions of short-circuit currents.

The VKY-12 series side-mounted solid-sealed high-voltage vacuum circuit breaker adopts fixed installation and is mainly used in fixed switchgear. This circuit breaker can be used independently or in ring network power supply, box-typetransformers, or various non-standard power supply systems.