VS1 side-mounted series indoor HV vacuum circuit breakers are suitable for three-phase AC 50Hz, rated voltage 7.2~12kV indoor HV switchgear. When used in ring network cabinet equipment, it can replace sulfur hexafluoride load switches as the incoming line switch of the substation, providing backup protection for the outgoing line cabinet; at the same time, it can be used as an outgoing line switch to protect and control distribution transformers with a capacity greater than 1250kVA, and can also be used as a connecting circuit breaker for dual power incoming lines.

 VS1 side-mounted series indoor HV vacuum circuit breakers comply with following national standards and GE standards;

GB1984  AC HV circuit breakers,JB3855  3.6-40.5kV indoor AC HV vacuum circuit breakers  DL403 10-35kV indoor HV vacuum circuit breakers ordering technical conditions.

VS1 side-mounted series indoor HV vacuum circuit breakers can be operated frequently and have the ability to open and close multiple times and quickly reclose. 

VS1 side-mounted series indoor HV vacuum circuit breakers are designed as front and rear sub-assembly structures and can be used as side-mounted fixed installation units.