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    12KV VCB with Fuse combination12KV VCB with Fuse combination
Product Details

12KV VCB with Fuse combination

VF(R)-12 indoor embedded high-voltage alternating-current vacuum load switch –fuse combination (vacuum load switch) is a new-generation vacuum switching equipment developed based on unique design ideas to meet the market demand. It is widely used for indoor armored air-insulated switch cabinets. In normal conditions, it can operate within its technical parameters in any grid of the specified voltage level safely and stably.

Normal operating conditions

●  Ambient temperature: - 40℃~+40℃ (below 35°C within 24 hours)

●  Relative humidity: ≤95% (daily average) or ≤90% (monthly average)

●  Altitude: ≤ 1000m

Item Unit Reference value
Vacuum load switch
Vacuum load
switch-fuse combination
High breaking

capacity vacuum


High breaking
capacity vacuum



Rated voltage kV 12 12 12 12
Rated insulation level  voltage Lightning impulse withstand voltage
kV 75 75 75 75
Rated insulation level  voltage 1 min power-frequency withstand kV 42 42 42 42
Rated frequency Hz 50/60 50/60 50/60 50/60
Rated current A 630 125(fuse) 630 125(fuse)
Rated short-circuit breaking current kA - 50(fuse) 25(arc suppression chamber) 25(arc suppression chamber)
Rated short-circuit making current(peak value) kA 50 - 63 -
Rated short-time withstand current kA 20 - 25 -
Rated withstand current(peak value) kA 50 - 63 -
Rated breaking current of cable during charge A 16 - - -
Rated breaking current of no-load transformer KVA 1250 - 1250 -
Rated breaking take-over current A - 3150 - 3150
Breaking times of the rated short-circuit current Times
Mechanical life M2 level M2 level M2 level M2 level
Weight kg 125

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