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Home/Vacuum Circuit Breaker/12kV Vacuum Circuit Breaker/ZN63A(VS1)-12/630 Fixed Vacuum Circuit Breaker with Partitioned Embedded Pole ZN63A(VS1)-12/630 Fixed Vacuum Circuit Breaker with Partitioned Embedded Pole
The ZN63A(VS1)-12/630-20 vacuum circuit breaker is designed with embedded pole technology and insulation partitions to ensure reliable performance and operator safety. As a fixed type breaker, it is widely used in 12kV medium voltage switchgear systems, providing stable operation and extended service life.
Electrical ProductsFeatures of ZN63A(VS1)-12 Vacuum Circuit Breaker
Rated Voltage: 12kV
Rated Current: 630A
Rated Short-Circuit Breaking Current: 20kA
Type: Fixed type, embedded pole with partition
Phase Center Distance: 150 mm
Contact Gap: 275 mm
Control Power Supply: AC/DC 220V
Anti-Pumping Relay (KO): Equipped
Closing Interlock Device: Equipped for safe operation
Main Shaft Extension: 40 mm on the right side of the frame
Advantages of VCB
Embedded Pole: Protects the vacuum interrupter from external conditions and improves insulation reliability.
Partition Design: Enhances insulation and operator safety.
User-Friendly Panel: Integrated front panel with operation buttons and status indicators.
Safe Operation: Equipped with interlocks and anti-pumping relay to prevent misoperation.
Long Service Life: High mechanical and electrical endurance, suitable for frequent switching.
Technical Parameters of ZN63A(VS1)-12 Vacuum Circuit Breaker
| No. | Item | Unit | Data | ||||||||
| 1 | Rated voltage | kV | 12 | ||||||||
| 2 | Rated frequency | Hz | 50 | ||||||||
| 3 | Rated insulation level | 1min power frequency withstand voltage | KV | 42 | |||||||
| Rated lightning impulse withstand voltage | KV | 75 | |||||||||
| 4 | Rated current | A | 630 | 1000 | 1250 | 1600 | 2000 | 2500 | 3150 | 4000 | |
| 5 | Rated short-circuit breaking current
Rated short-time withstand current (virtual value) |
kA | 20 | 20 | 20 | ||||||
| 25 | 25 | 25 | 25 | ||||||||
| 31.5 | 31.5 | 31.5 | 31.5 | 31.5 | |||||||
| 40 | 40 | 40 | 40 | 40 | 40 | ||||||
| 50 | |||||||||||
| 6 | Rated short circuit making current Dynamic stability rated current | kA | 50 | 50 | 50 | ||||||
| 63 | 63 | 63 | 63 | ||||||||
| 80 | 80 | 80 | 80 | 80 | |||||||
| 100 | 100 | 100 | 100 | 100 | 100 | ||||||
| 125 | |||||||||||
| 7 | Rated short-circuit breaking current breaking time | Times |
(above 40KA) |
||||||||
| 8 | Rated short-circuit duration | S | 4 | ||||||||
| 9 | Rated operation sequence | O-0. 3s-CO-180s-CO, O-180s-CO-180s-CO (above 40kA) | |||||||||
| 10 | Mechanical life | times | 30000 | ||||||||
| 11 | Rated breaking current of single capacitor bank | A | 630 | ||||||||
| 12 | Rated breaking current of back
to back capacitor bank |
A | 400 | ||||||||
| 13 | Maximum D.C componen 5 0 % | ||||||||||
Applications
Metal-clad switchgear (KYN28 and similar types)
Substations and power plants
Industrial power distribution systems
Protection and control of motors, transformers, and capacitors
Dimensions of ZN63A(VS1)-12 Vacuum Circuit Breaker
Product Benefits
Reliable insulation and arc-extinguishing performance
Maintenance-free embedded poles
Safe and compact design
High breaking capacity and fast interruption
Cost-effective with long service life
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