This type vacuum interrupter is the ceramic miniaturized product,it adopts Cu-Cr contact material,cup-shaped longitudinal magnetic structure,ceramic insulating enclosure with large creepage distance.It has the features of small size,large breaking capacity,high insulation level.It can be used with the corresponding indoor and outdoor vacuum circuit breaker or vacuum distribution equipments,which is widely used in Electric power,mechanism,chemical,metallurgy,mining and other industries.

Overall dimensions

Technical parameters

No. Item Unit Value
1 Rated voltage kV 12
2 Rated current A 630
3 Rated frequency Hz 50
4 Short-time power frequency withstand voltage kV 42
5 Lighting impluse withstand voltage kV 75
6 Rated short circuit breaking current kA 12.5
7 Rated withstand current(peak) kA 31.5
8 Rated short circuit making current kA 31.5
9 Rated short-time withstand current kA 12.5
10 Rated duration of short circuit S 4
11 ★Rated breaking current of single capacitor bank A 400
12 ★Rated breaking current of single capacitor bank A 200
13 Rated operating sequence O-0.3s-CO-180s-CO
14 Breaking operations of rated short circuit breaking current Times 30
15 Rated mechanical endurance Times 10000
16 Closing force due to bellow and atmosphere N 100±40
17 Force required to hold contacts open at full stroke N 180±50
18 Circuit resistance at lowest rated contact force μΩ ≤25
19 Rated limit erosion mm 3
20 Gas pressure inside vacuum interrupter Pa ≤1×10-3
21 Weight of moving parts kg 0.6
22 Weight of vacuum interrupter kg 1.65
23 Clearance between open contacts mm 9±1
24 Average opening speed m/s 1.0±0.2
25 Average closing speed m/s 0.6±0.2
26 Rated compressive of contact force N 1000±200
27 Contact bouncing duration at closing operation ms ≤2
28 Closing and opening non-simultaneity of three-phase contacts ms ≤2
29 Rebound amplitude of opening contacts mm ≤2
30 Note:★Rated characteristics to be given on request

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