Model NO.: VS1-12
Poles Number: 4
Type: Circuit Breaker
Function: Conventional Circuit Breaker
Certification: VDE, ISO9001-2000, CE, UL, CB, CCC
Rated Voltage: 12 Kv
Altitude: up to 3,000m Above Sea Level
Environment: Indoor
Special Conditions: Depends on The Customer
Rated Current: 630 a
Rated Short Time Continual Time: 4 S
Test Equipment: IEC Standard
Typical Products: Circuit Breaker
Frequency: 50 Hz
Warranty: 10 Years
Trademark: Tianan Electric
Specification: IEC60076-1, IEC60076-2, IEC60076-5
Origin: Xiangshan Zhejiang P. R China
HS Code: 8535210000
VS1-12 Indoor AC Vacuum Circuit Breaker
NINGBO TIANAN (GROUP) CO., LTD.
GeneralVS1-12 (ZN63A) type indoor medium voltage vacuum circuit breaker is used as protection and controlÂ
unit of three-phase AC indoor medium voltage switchgear and industrial and mining enterprise powerÂ
device of 50Hz and rated voltage up to 7.2~24kV. This products comply with IEC60694, IEC62271-100.
Specifications
| No. | Description | Unit | Data | ||||
| 1 | Rated voltage | kV | 12 | ||||
| 2 | Rated insulation levels |
Rated power frequency withstand voltage/1min ( phase to phase, phase to earth, open contacts) |
 kV |
42 | |||
|
Rated lighting impulse withstand voltage (phase to phase, phase to earth, open contacts) |
75 | ||||||
| 3 | Rated frequency | Hz | 50 | ||||
| 4 | Rated current |   A |
630 | 630 | 1250 | 1600 | |
| 1250 | 1250 | 1600 | 2000 | ||||
| 2000 | 2500 | ||||||
| 2500 | 3150 | ||||||
| 4000 | |||||||
| 5 | Rated short circuit breaking current | kA | 20 | 25 | 31.5 | 40 | |
| 6 | Rated short time withstand current(4s) | kA | 20 | 25 | 31.5 | 40 | |
| 7 | Rated short circuit making current | kA | 50 | 63 | 80 | 100 | |
| 8 | Rated peak value of withstand current | kA | 50 | 63 | 80 | 100 | |
| 9 | Rated operating sequence |
O-0.3s-CO-180s-CO O-180s-CO-180s-CO |
|||||
| 10 | Rated short circuit breaking current breaking times | times | 30/20(40kA) | ||||
| 11 | Rated cable charge breaking current | A | 25 | ||||
| 12 | Rated single capacitor bank breaking current | A | 630/400(40kA) | ||||
| 13 | Rated back to back capacitor bank breaking current | 400 | |||||
| 14 | Mechanical life | times | 10000 | ||||
| 16 | Allowed abrade cumulative thickness of moving and static contactor | mm | 3 | ||||
| 17 | Clearance between open contacts | mm | 11±1 | ||||
| 18 | Contact stroke | mm | 3.5±0.5 | ||||
| 19 | Bounce duration of contact closing | ms | ≤2 | ||||
| 20 | Non-simultaneity of three phase for opening and closing | ms | ≤2 | ||||
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