ZN63A(VBM7)-12 12KV 24KV Side-mounted high voltage vacuum circuit breaker
VS1 vacuum circuit breaker with spring mechanism details listed as belows:ItemDescriptionUnitData1Rated voltageKV122Max. voltageKV123Rated currentA630/1250/25004Rated short circuit breaking currentKA2
ZN63-12(VBM7) Side-mounted vacuum circuit breaker is suitable for use in three-phase power systems with a rated voltage of 12kV and a frequency of 50Hz. It is used as a protection and control appliance. It is especially suitable for frequent operations that require rated current, or for breaking short-circuit current multiple times place.
ZN63-12(VBM7) series indoor mounted high-voltage AC vacuum circuit breaker adopts fixed installation and is mainly used in fixed switch cabinets. The circuit breaker can be used alone or in ring network power supply, box-type substation or various non-standard power supply systems.
Specification
VS1 vacuum circuit breaker with spring mechanism details listed as belows:
Item
Description
Unit
Data
1
Rated voltage
KV
12
2
Max. voltage
KV
12
3
Rated current
A
630/1250/2500
4
Rated short circuit breaking current
KA
20/25/31.5
5
Rated short circuit making current
KA
50/63/80
6
Rated peak withstand current
KA
50/63/80
7
4S Rated withstand current
KA
20/25/31.5
8
Rated insulation level
Power frequency voltage(when losing a circuit)
KV
Dreaker 65
Impulse withstand voltage(when losing a circuit)
Dreaker 125
9
Rated operating sequence
OC-0.3s-CO-180S-CO
10
Mechanical life
Times
20000
11
Rated short circuit current breaking time
Times
274
12
Rated close brake voltage of operating machnie
V
110,220
13
Rated break brake voltage of operating machnie
V
110,220
14
Contact stroke
mm
13±1
15
Exceed range(the compress length of contact sping)
mm
3.5±0.5
16
Different period of three-phase break and close break
ms
≤2
17
The jump time of contact close break
ms
≤2
18
Average break speed
m/s
1.1~1.7
19
Average closing speed
m/s
0.6~1.1
20
Opening time
Ubder max.operating voltage
S
≤0.05
Under min.operating voltage
≤0.08
21
Closing time
s
0.1
22
Resistance of each phase main loop
μΩ
630≤50 1250≤45/ 1600-2500≤40
23
Contacts limit ersion
mm
3
Details Images
Packing details
by strong wood box
OEM can be customized as required on the box.
Buy Guide
1.Determine the rated voltage
2.Determine breaking capacity
3.Determine the rated current
4.Determine the installation method (A: handcart type B: fixed type)
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Chenyuan Electric is a rapidly growing company with over 15 years of experience in the production and service of electrical power equipment. We are your reliable partner in the field of electrical installation equipment!
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