Sell Indoor Side Installed Vacuum Circuit Breaker

Model No.:VB Series
Product Origin:China
Brand Name:TELLHOW
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Description:General introduction: The VB12 series product is fixed typed with hanging general planning. The vacuum out arc room is lengthways placed right side and the operating mechanism is placed in the front. It is safely operated, using the connection of principal axis placed portrait and insulated operation pole placed plumb to operate the switch. It has a metal board, which can install insulated cover, in the left with an install hole, so the breaker can placed in the cabinet on the left. The product has adopted advanced technology both home and abroad Characteristics: 1) Long mechanical endurance and electrical endurance 2) Good electrical insulation 3) Small in volume, and no oil 4) The burning and humidity prevention and mildew avoiding is very good 5) A.B.C three-phase of circuit pillar is placed lengthways. It can be applied together with the common load switch Major technical parameters: 1) Rated voltage: 12kV 2) Rated current: 630A, 1,250A 3) Rated frequency: 50Hz 4) Rated insulation level: a) Lightning impulse withstand voltage: 75 (between phases, to earth), 85 (across isolation distance) b) 1 min power-frequency withstand voltage: 75 (between phases, to earth), 42 (across isolation distance) 5) Rated short-circuit breaking current: 25kA, 31.5kA 6) Rated short-circuit making current: 63kA 7) 3S thermal stability current: 25kA 8) Breaking time of the rated short-circuit breaking current: 30 times 9) Breaking time: