Model Number: VSP5-12/630 Brand Name: YUFLY Key Specifications/Special Features: 1: High breaking capacity, vacuum arc extinguish, SF6 insulated, high arc extinguish and insulate performance.2: High security performance.no oil, an anti-explode device on the top of the box to avoid internal fault.3: Maintenance free.4: Safe and reliable operation.5: Automatic interface can be matched with current transformer.Optional material:1: Incoming and outgoing cable2: Incoming and outgoing bushing3: Suitable for substation Item Unit Data Rated voltage kV 12 Rated current A 630 Rated short time withstand current kA 20 Rated short circuit making current kA 31.5 Rated peak withstand current kA 31.5 Rated short circuit duration time s 4 1 min P.F withstand voltage kV 42 Lightning impulse withstand voltage kV 75 Electrical lifetime Times 1000 Mechanical lifetime Times 10000 Power frequency Hz 50/60