| Breaking Capacity: | High Voltage Circuit Breakers |
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| Operation: | Electric Type |
| Speed: | Normal Type Circuit Breaker |
| Customization: |
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Shipping Cost:
Estimated freight per unit. |
about shipping cost and estimated delivery time. |
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| Payment Method: |
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| Initial Payment Full Payment |
| Currency: | US$ |
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| Return&refunds: | You can apply for a refund up to 30 days after receipt of the products. |
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Suppliers with verified business licenses
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ZW43-12 vacuum circuit breaker has overload and short-circuit protection functions, which meets the control and measurement requirements, and can also realize remote control and monitoring. It is suitable for protection and control in power distribution systems of substations and industrial and mining enterprises, as well as frequent operation places in rural power grids.
operate
1. The circuit breaker adopts a new miniaturization design, adopts a fully enclosed structure, unique arc extinguishing chamber packaging technology, and has good sealing performance, which helps to improve moisture-proof and anti-condensation performance, and is suitable for use in high-temperature and humid areas.
2. The breaking performance of the circuit breaker is stable and reliable, and has the characteristics of no burning and explosion hazards, safety, maintenance-free, small size, light weight, and long service life.
3. The circuit breaker can be equipped with a two-phase CT, which outputs two-phase current for the function control to analyze the information and realize the over-current protection function.
4. The circuit breaker is equipped with a closing inrush current elimination device (composite controller), which can not only avoid the malfunction caused by the inrush current, but also prevent the possible errors caused by the tremor of the tripper due to the fact that the coil of the current release is not charged during normal operation.
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Item
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Unit
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Data
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Rated voltage
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KV
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12
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Power frequency withstand voltage of 1 min (interelectrode, to ground/fracture)
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KV
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dry 42/wet 34
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Lightning shock resistance (pole to ground)
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KV
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75
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Lightning impact pressure (fracture)
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KV
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85
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Rated frequency
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Hz
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50
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Rated current
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A
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630
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Rated short term withstand current and duration
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KA/4S
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20
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Rated short circuit breaking current
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KA
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20
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Rated short circuit shut-off current
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KA
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50
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Rated peak withstand current
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KA
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50
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Rated operating sequence
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/
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0-0.3s-C0-180s-CO
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Rated number of short circuit current breaking
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Times
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30
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Mechanical life
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Times
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30000
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Accumulative wear thickness of contact
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mm
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3
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Weight
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kg
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70
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Ambient temperature: not higher than 40°, not lower than -10°;
Altitude height: not more than 1000m. If the altitude increases, the rated insulation level increases accordingly;
Relative humidity: the daily average is not more than 95%
Earthquake intensity: no more than 8 level
working places : The place without fire, explosion, serious pollution, chemical corrosion and violent vibration.
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Suppliers with verified business licenses
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