| Breaking Capacity: | High Voltage Circuit Breakers |
|---|---|
| Operation: | Energy-storage Type |
| Speed: | Normal Type Circuit Breaker |
| Arc-extinguishing Medium: | Vacuum |
| Installation: | Fixed |
| Structure: | ACB |
| Samples: |
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| Customization: |
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Audited Supplier Get ready to experience the ultimate in reliability and stability with our 12kv High Voltage Vacuum Circuit Breaker Pole with Integrated Structure! Our embedded pole uses top-quality insulation material to seal the vacuum interrupter and main loop conductive element, creating a strong and durable insulation support that is easy to assemble and boasts high environmental pollution tolerance. This amazing product is perfect for frequent operation places, such as electric power, machinery, chemical industry, metallurgy, mining and other departments, with frequency 50Hz/60Hz, rated voltage 12kV, 17.5kV, 24kV, 27.5kV, 40.5kV. Match it with our relevant indoor&outdoor vacuum circuit breaker or vacuum distribution device for unbeatable performance and reliability. This product is used in the embedded pole of outdoor VCB. Meets or exceeds the requirement of IEC60694 and JB-T11203-2011.
So why wait? Upgrade your power system today with our Embedded Pole/Vacuum Circuit Breaker Parts/12kv Embedded Pole and experience the power and stability you deserve!Specification of VI
| Parameter item | Unit | Data |
| Rated voltage | kV | 12 |
| Rated current | A | 630/1250 |
| Rated frequency | Hz | 50 |
| Rated short-time power frequency withstand voltage(1min) | kV | 42 |
| Rated lightning impulse withstand voltage | kV | 75 |
| Rated short-circuit breaking current | kA | 20/25 |
| Rated short-time withstand current | kA | 20/25 |
| Rated peak withstand current | kA | 50/63 |
| Rated short-circuit making current | kA | 50/63 |
| Rated short-circuit duration | s | 4 |
| The DC component of rated short circuit breaking current | % | 40 |
| Rated cable charging breaking current | A | 25 |
| Rated operating sequence | O-0.3s-CO180s-CO | |
| Breaking operations of rated short circuit breaking current | times | 30 |
| Mechanical life | times | 10000 |
| Contact automatic closing ability | N | 110±30 |
| Force required to hold contact open at full stroke | N | 180±30 |
| Circuit resistance at lowest rated contact force | μΩ | ≤25 |
| Contact limit erosion | mm | 3 |
| Over travel | mm | 3±0.5 |
| Partial discharge | Pc | ≤3 |
| Weight for moving parts | kg | 1.8/1.3 |
| Storage time | years | 20 |
| Parameter item | Unit | Data |
| Clearance between open contacts | mm | 9±1 |
| Average opening speed | m/s | 1.1±0.2 |
| Average closing speed | m/s | 0.6±0.2 |
| Rated contact pressure | N | 1700±250 |
| Contact bouncing duration at closing operation | ms | ≤2 |
| Closing and opening non-simultaneity of contacts | ms | ≤2 |
| Maximum rebound during opening | mm | ≤2 |
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Audited Supplier 
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